Top Circuits Page 88
- Page 88
-
Hope, you follow my advice and hack your cheap USB speakers, to get nice ( pre-assembled ! ) analog front-end for this project. If not, than get your soldering iron to work, minimum two resistors and 1 cap would required, assuming you already have display....
-
-
OK, after having some fun with stereo version of the VU meter I described in my previous blog-post, now it`s time to do a serious stuff. Studio grade VU meter ! 24 steps, equallyspaced every 3 dB, covering Extra wide Dynamic Range from -63 up to +6 dB.....
-
The PhytoBot is a semi-intelligent plant which responds to external stimulus (light intensity and light location) and responds to it as a phototropic plant would. Essentially it is designed as a piece of interactive artwork for operation over a long period....
-
I have a big mirror on the left wall, it makes the room brigther, but when watching a movie you want a dark room, and we could see reflections of the movie in it (very annoying) so i installed a grey/black blind i found in a DIY shop, it was a great fix. The....
-
The figures above shows the basic idea of any robot, where we have some inputs and output devices connected to the brain and some outputs controlled by the brain. In our case we will have the Arduino like the brain. The central Brain, controls all movements....
-
In this post I will attempt to describe the steps I took to build the arduino based thermostat shown in the following videos. The first video was taken when around just half of the coding of the menu system was complete, but gives you a basic run through of....
-
-
Well, I have few good uses for it, one of them is ensure in meetings people are respectful of time and are not taking all the time for their own topics. Good for ship-room or SCRUM meetings. Following is a list of parts and for the special ones a link for....
-
ArduinoISP Bootloader/Programmer Combination Shield (not shown) & Arduino with USB to serial chip (e. g. Arduino Uno ) to upload the bootloader and sketches to DIYduino. You can also use a USBtoSerial programmer for uploading a sketch and work around the....
-
-
You may need also need 10 diodes and different resistors, especially if you are using white LED`s please the Troubleshooting section in step 3 for details. . 005 ³ thick matte drafting film I bought a sheet from a local artist`s supply store. The smallest....
-
I`ve been visiting local convenience store (Dollarama, here in Montreal, Canada) and notice nice looking FM Radio, just for only $3. Why not to try to interface it to my lovely Arduino Idea looks quite challenging, the same time what is the point in....
-
-
I originally wanted to purchase a Nebulophone but, my El-Cheapo price range didn`t like the tag. I realized that I could program my own AtMega 328 by using ArduinoISP Then I found out that if the code was Arduino compatible, why not just use the Arduino as a....
-
Yesterday I was going to start watching a movie, when me and my friendpedrodecided to give up on the movie and build a binary clock. After sometime thinking on how to program it, we made it. It works beautifully, so I decided to show here how I`ve done. It....
-
This page is describes the construction of an RFID reader using only an Arduino (Nano 3. 0 was tested, but others may work), a hand-wound wire coil, and some assorted low cost common components. RFID readers are devices sold by companies such as Parallax to....
-
Have you ever wanted to make a line following robot but the infrared sensors were too expensive for you Do you want to upgrade the robot in my other instructable Also, if you`re from the UK and have a maplin store near you, you`ll be able to get some IR....
-
This instructable is a guide for setting up an automated gardening system using an arduino and other cheap electronic parts. It allows sustainable gardeningby using sensors to determinesoil moisture, as well as a webscraper to determinefuture weather. It....
-
Shield for Arduino designed and based on the module GSM/GPRS SIM900 or the GSM/GPRS & GPS module SIM908, to make calls, voice and data connections via GPRS. We begin with the supply circuit a simple LM7805. To work, it is necessary to provide an input....
-
I was intrigued while playing the motion games on Nokia 5800. I was thrilled, how I could control the racing car by only tilting the phone. I used to drea..
-
-
I bought a solar powered garden light. The solar panel charges the batteries and when it gets dark the lights (3x LEDs) turn on until it either gets lights again or the batteries run out. First, the batteries. The control box houses the batteries, which are....
-
In this instructable I use an example of interfacing an Arduino to an ARINC 429 transceiver in order to demonstrate the general process of interfacing an Arduino to electronic circuits so you can use these techniques on your own designs. An ARINC 429 bus is....
-
Example if you press number 8 it will effect the wire ROW3 and CLO2. By this the microcontrollercan determine what key was pressed with only 7 wires from the keypad. ..
-
Man has long wrestled with Time. Also, with knocking on things and not getting the time of day. We propose a knocking platform through which these fundamental needs are met. This is illustrated with the Knock Block KUI and accompanying Clock Knock Block....
-
A ascends a route while Climber B stays on the ground and tracks Climber A`s progress with the laser pointer. The Redpointer then records exactly what route was followed. Here, the route recorded in Mode 1 is played back in real-time, projecting a laser....
-
7-Segment LED Display is a very useful component, but also a very confusing and difficult piece to use for beginners. It won`t be difficult once you get it working for the first time. It basically consists of 7 LEDs, (8 if include decimal point). Just like....
-
A while ago, as my first microcontroller project, I made a Pong game on a 5G—7 LED display, but then nothing became of it. Recently I was given a hard hat as part of a uniform (for an engineering competition) and told to customize it, and remembered pong.....
-
In case the robot being on the black line, it will always go ahead, and in the case of out of line and fall into a white area, it will determine whether to correct to the left or right, and thus remain on the black line. The sensors that will be used is the....
-
One of the most interesting shield that you can mount on the Arduino platform is certainly the ethernet shield, because enable numerous networking applications such as remote control of systems and users, web access and publication of data, and more yet, the....
-
This was my very first arduino project. Its great for beginners. Fade the color or the lights my moving your hands near it. It fades from a pretty purple blue to a firey red-orange. Its was SUPER easy to build, not to hard to write the code, and its really....
-
When I purchased the salve dial, it came with no instructions, packaging or other details. The only markings (other than five decades of grime) were those on the face (SMITH SECTRIC, ACELEC SYDNEY), and some markings on bracket holding the mechanism together....
-
This Lazy Old Geek is also an Arduino Geek. If you are an Arduino Geek, one of the common microcontrollers used by Arduinos is the Atmega328 chip. In order to use Arduino software, the Atmega must have bootloader software on it. I didn`t realize there was a....
-
-
ATMega168 or 328microcontroller chip w/Arduino bootloader (you can use the one on your Arduino for now!) $4. 00-$5. 50 - buy unbootloaded mouser (cheaper) / buy bootloaded sparkfun (expensive) I have created a Mouser project that includes everything you will....
-
*We were inspired by the following project, and looked at the code for it, but ended up developing our own. However, if you are interested in making an umbrella that plays musical notes due to press, this is a great page: For more information about the 4051....
-
This Instructable covers the assembly of a circuit capable of PWM-ing ( pulse width modulating ) a high-power RGB LED strip and programming an Arduino to cycle through a range of colors. In this context, high power is 9-12 volts. I will discuss how to....
-
This Instructable covers the assembly of a circuit capable of PWM-ing ( pulse width modulating ) a high-power RGB LED strip and programming an Arduino to cycle through a range of colors. In this context, high power is 9-12 volts. I will discuss how to....
-
Security system sensors such as motion detectors, reed switches, pressure mats, glass-break detectors, infra-red beams, and conductive film can be very handy for all sorts of things including home automation systems, interactive art installations and....
-
I`m going to show you how to use your Arduino to control up to 12 servos at once with minimal jitter. Using a simple serial interface you can control the position of up to 12 servo channels. Up to 10 snapshot positions can be saved and played back at any....
-
But the idea is to apply this code to other projects with 7 segment displays that I might do later. if you want to learn a bit more of 7 segment displays you can read more at this post I`ve made. ..
-
The Arduino Internet Gizmo is a USB, Arduino, and RFID device for web surfing. The gizmo works by placing an RFID tag on the top of the gizmo. The gizmo reads the RFID tag and sends the tag number via USB to a program running on a PC. The program looks up....
-
Basically I used the parts list that is on the first page of the Make Magazine article. But that list is for the harp which has 6 lasers so most quantites can be just 1. ..
-
Setup the lights on the breadboard like a traffic light. Red on top, then yellow, and then green. The small red and green are the pedestrian crossing signals. Again red on top and green just below. Put the buttons in so you have at least 2 pin holes space to....
-
I already have one project where arduino outputs audio signal to USB speakers via software 10-bits PWM. In first, I was not satisfied with quality of sound generated via PWM. There are just not enough speed in arduino engine to run PWM well. For example for....
-
Often government data sets available to us online are taken from major nearby metropolitan areas or infrastructural centers. With an easy to follow introduction to new softwares and technologies the urban sensor kit allows anyone to obtain location....
-
Measuring the consumption of a resource that has units by volume can be more tricky than it sounds. Use of resources such as water, gas, and even electricity is typically measured by gauges that determine either instantaneous flow rate or cumulative volume....
-
Water is a precious resource in many parts of the world, and many people rely on water tanks to supplement their water supply by storing collected rainwater or water pumped from a well or bore. But how do you measure how full a tank is Tanks are constructed....
-
-
-
I`ve been working on a project that will allow me to determine the number of sun hours available in a given spot, and track that over time, as a component of solar power installation design. The idea is to get a light detector in the sun, record the number....
-
I wanted to teach my Arduino to talk telephone, so I added a HT9000A DTMF chip to produce the familiar "touch tones" (upcoming projects will act upon "heard" DTMF tones, but with a different chip). The output is really low volume, so you may want to plug in....
-
Ever Imagined controlling your home appliances using your cell phone. You can find a lot of circuits for this application. But they make use of Telephone. I modified the circuit and redesigned it to make it compatible with normal cell phone headphone. Just....
-
The IR circuit can be used to switch devices using TV Remote. Normal circuits can switch only one device. But using this circuit, different devices can be controlled using same remote with different switches. In this circuit, we interfaced 8 devices. These....
-
Many times, I have written code for UART communication and when it came to testing, my laptop does not have a serial port. I bought a USB to serial port converter but it didnt worked. I felt frustated and finally thought of buying a Serial to Com port module....
-
One of my student has made a disgraceful robot that used two stepper motors and with a simple IR sensor. Yes, above picture is what I`m talking. Without battery carrying, a little bit torque of the stepper and misalignment of driving shaft, makes it crawling....
-
To assure that USB and serial segments are electrically isolated, we used an optocoupler (U1). The LED section of U1 is driven directly by DTR, so we should select a very sensitive optocoupler to prevent too much current flow from DTR (which is usually very....
-
This LED flasher circuit is a classic two transistor flip flop. This flasher circuit is very popular and it`s usually the first circuit to build when starting electronic circuit building hobby. Here is the schematic diagram of the famous LED flasher circuit:....
-
Perhaps the most challenging aspect of interpreting ladder diagrams, for people more familiar with electronic schematic diagrams, is how electromechanical relays are represented. Compare these two equivalent diagrams: Also, explain the operation of this....
-
This document was written with care, but errors cannot be excluded. Neither the company named above nor the seller assumes legal liability for mistakes, resulting operational errors or the consequences thereof. Trademarks, company names and product names may....
-
-
-
-
-
-
To power it up you need a clean stable source of 5 volts DC. This means that you either pick up a switching 5v DC power supply from our favorite JK Electronics, mail order one from Jameco or you will have to wire up a voltage regulator. Page 254 of Phys Comp....
-
-
The p-Wave Locked Loop provides instantaneously the p to p time interval of the applied ECG and enables us to perform heart rate variability studies on the basis of p_p variation. The first version of the PWLL started its processing action with the....
-
Zeroth-order resonant (ZOR) antenna manufactured on microstrip transmission lines has attracted great interest in the small antenna applications. Many techniques have been employed in order to miniaturize the composite right/left handed (CRLH) transmission....
-
We propose a comprehensive design procedure to design Field-programmable/Reconfigurable Analog Integrated CMOS circuits. Instead of repeatedly iterative simulation steps to achieve desired design specifications by fine tuning the W/L ratios of the FETs, we....
-
Sustainable satellite 802.11b wireless internetwork and how it was achieved...
-
This is an 8MHz amplitude modulated (AM) radio transmitter, which I built mainly for work, and also as an exercise in electronics (it is the first RF transmitter I`ve ever built). We wanted to have a simple radio transceiver design at our disposal for some....
-
Well, it took some time and a few failed attempt, but here it is. A neat project that lets you control two wheels or tracks from your PC serial port with no wires attached. I have it working at 2400 baud and that is about as fast as I can think. We assume....
-
Electronic circuits are presented in schematic form. A schematic is really a map showing the path the current takes through the various componenets. Each component is represented by a symbol, usually with either a label or a value (or both). The arangement....
-
The crime prevention bell device that I produced about 20 years ago works still in the active service. It worked many times to make the thief not operate well and not go into it. The bell keeps ringing generally though the bell rings as for the crime....
-
Does does it forget to be erased the small lamp and the headlight of the car, the battery go up, and is there what to the engine has not started once and twice everyone I am using it for a long time since then thinking about the circuit that prevents this in....
-
MC78L15ABPG positive voltage regulator, 100mA, TO-92..
-
This is the circuit diagram for the Comfile CUSB-36R Programmed Christmas Lights. If it is a little hard to read drop me an email at keithsw1@yahoo. com and I will return a more detailed schematic. Basically the Comfile CUSB-36R can either directly drive....
-
-
RayDialer TX1 Channel Settings = Note: Switch pulls low, if ON. DIGIT 4 3 2 1 frequencies [Hz] 1 ON ON ON OFF 697 + 1209 2 ON ON OFF ON 697 + 1336 3 ON ON OFF OFF 697 + 1477 4 ON OFF ON ON 770 + 1209 5 ON OFF ON OFF 770 + 1336 6 ON OFF OFF ON 770 + 1477 7 ON....
-
Circuit schematic for the classic PIC serial programming cable. There is also a high resolution version of the image, and a Scalable Vector Graphics source file for printing. Please note that the SVG file might not display properly in some browsers.....
-
This option has the advantage that one does not need to change anything in the receiver itself. However, since any filter will give some attenuation of the signal, this will degrade the noise figure of the receiver, and thus limit the weakest signal which....
-
The circuit uses the very popular Sharp IR module (Vishay module can also be used). The pin nos. shown in the circuit are for the Sharp & VIshay modules. For other modules please refer to their respective datasheets. The receiver consists of a 555 timer IC....
-
This circuit not only indicates the amount of water present in the overhead tank but also gives an alarm when the tank is full. The circuit uses the widely available CD4066, bilateral switch CMOS IC to indicate the water level through LEDs. When the water is....
-
-
-
An awful thing happened a few weeks ago. I ran out of telephones to restore. All my payphone projects were finished. They were lined up on shelves doing what antique telephones do best - collect dust. I also wanted to write about a special project for the....
-
-
Design and implementation of a TC237 CCD camera...
-
A good while back, I made the 1-key-keyboard project. Ever since it has always been in the back of my mind that the ATTiny microcontroller...
-
A wide range frequency meter is an useful tool for an electronics lab. This projects describes a frequency meter based on AT90S231 microcontroller that can measure input frequencies up to 50 MHz. The measured frequency is displayed on 6 digit multiplexed....
-
This project can measure the clock pulses fed to the Timer input of the AVR microcontroller. The Bascom code counts the clock pulses for 1 second and display it...
-
Here`s an another project, which makes an Scrolling LED display. Here 64 leds which are connected to an Matrix display. The Anodes are drived through an Driver...
-
I love the Arduino as a simple and accessible controller platform for many varied projects. A few months ago, a purchased an Ethernet shield for my Arduino controller to work on some projects with a mate of mine it was a massive hit for the first time, I....
-
Arduino Mega 2560 Board Tutorials Projects Drivers, Schematic and complete Information...
-
This is a very basic tutorial for atmega32 microcontroller beginners to get started. You can call this little program as Hello World for atmega...
-
Hello All, Today I will show you how you can make a simple RPM Meter using AVR ATmega8. The RPM meter we will be making is a contact less type...
-
Atmel On the PC keyboard PS 2 AT89C2051 keylogers circuit connection cable connects to the circuit between what is written in the wake of the program running...
-
Microcontrollers (MCUs) are fantastic little ICs that give an extra element of versatility to your electronics, robotics or other project. But they`re really...
-
In this project i have interfaced an GPS with AVR microcontroller, the ATtiny2313 gets the location from the GPS and display it over the LCD display...
-
You will get this done in 30 min. Step 1: Parts 1. 1 X any type of circuit board 2. 1 X Atmel AVR Atmega16 microcontroller 3. 8 X 330 ohms Resistors 4...
-
This project is used to automate the home appliances through Bluetooth enabled PC. You can use the USB Bluetooth at the PC side and an Serail Bluetooth...
Hope, you follow my advice and hack your cheap USB speakers, to get nice ( pre-assembled ! ) analog front-end for this project. If not, than get your soldering iron to work, minimum two resistors and 1 cap would required, assuming you already have display....
OK, after having some fun with stereo version of the VU meter I described in my previous blog-post, now it`s time to do a serious stuff. Studio grade VU meter ! 24 steps, equallyspaced every 3 dB, covering Extra wide Dynamic Range from -63 up to +6 dB.....
The PhytoBot is a semi-intelligent plant which responds to external stimulus (light intensity and light location) and responds to it as a phototropic plant would. Essentially it is designed as a piece of interactive artwork for operation over a long period....
I have a big mirror on the left wall, it makes the room brigther, but when watching a movie you want a dark room, and we could see reflections of the movie in it (very annoying) so i installed a grey/black blind i found in a DIY shop, it was a great fix. The....
The figures above shows the basic idea of any robot, where we have some inputs and output devices connected to the brain and some outputs controlled by the brain. In our case we will have the Arduino like the brain. The central Brain, controls all movements....
In this post I will attempt to describe the steps I took to build the arduino based thermostat shown in the following videos. The first video was taken when around just half of the coding of the menu system was complete, but gives you a basic run through of....
Well, I have few good uses for it, one of them is ensure in meetings people are respectful of time and are not taking all the time for their own topics. Good for ship-room or SCRUM meetings. Following is a list of parts and for the special ones a link for....
ArduinoISP Bootloader/Programmer Combination Shield (not shown) & Arduino with USB to serial chip (e. g. Arduino Uno ) to upload the bootloader and sketches to DIYduino. You can also use a USBtoSerial programmer for uploading a sketch and work around the....
You may need also need 10 diodes and different resistors, especially if you are using white LED`s please the Troubleshooting section in step 3 for details. . 005 ³ thick matte drafting film I bought a sheet from a local artist`s supply store. The smallest....
I`ve been visiting local convenience store (Dollarama, here in Montreal, Canada) and notice nice looking FM Radio, just for only $3. Why not to try to interface it to my lovely Arduino Idea looks quite challenging, the same time what is the point in....
I originally wanted to purchase a Nebulophone but, my El-Cheapo price range didn`t like the tag. I realized that I could program my own AtMega 328 by using ArduinoISP Then I found out that if the code was Arduino compatible, why not just use the Arduino as a....
Yesterday I was going to start watching a movie, when me and my friendpedrodecided to give up on the movie and build a binary clock. After sometime thinking on how to program it, we made it. It works beautifully, so I decided to show here how I`ve done. It....
This page is describes the construction of an RFID reader using only an Arduino (Nano 3. 0 was tested, but others may work), a hand-wound wire coil, and some assorted low cost common components. RFID readers are devices sold by companies such as Parallax to....
Have you ever wanted to make a line following robot but the infrared sensors were too expensive for you Do you want to upgrade the robot in my other instructable Also, if you`re from the UK and have a maplin store near you, you`ll be able to get some IR....
This instructable is a guide for setting up an automated gardening system using an arduino and other cheap electronic parts. It allows sustainable gardeningby using sensors to determinesoil moisture, as well as a webscraper to determinefuture weather. It....
Shield for Arduino designed and based on the module GSM/GPRS SIM900 or the GSM/GPRS & GPS module SIM908, to make calls, voice and data connections via GPRS. We begin with the supply circuit a simple LM7805. To work, it is necessary to provide an input....
I was intrigued while playing the motion games on Nokia 5800. I was thrilled, how I could control the racing car by only tilting the phone. I used to drea..
I bought a solar powered garden light. The solar panel charges the batteries and when it gets dark the lights (3x LEDs) turn on until it either gets lights again or the batteries run out. First, the batteries. The control box houses the batteries, which are....
In this instructable I use an example of interfacing an Arduino to an ARINC 429 transceiver in order to demonstrate the general process of interfacing an Arduino to electronic circuits so you can use these techniques on your own designs. An ARINC 429 bus is....
Example if you press number 8 it will effect the wire ROW3 and CLO2. By this the microcontrollercan determine what key was pressed with only 7 wires from the keypad. ..
Man has long wrestled with Time. Also, with knocking on things and not getting the time of day. We propose a knocking platform through which these fundamental needs are met. This is illustrated with the Knock Block KUI and accompanying Clock Knock Block....
A ascends a route while Climber B stays on the ground and tracks Climber A`s progress with the laser pointer. The Redpointer then records exactly what route was followed. Here, the route recorded in Mode 1 is played back in real-time, projecting a laser....
7-Segment LED Display is a very useful component, but also a very confusing and difficult piece to use for beginners. It won`t be difficult once you get it working for the first time. It basically consists of 7 LEDs, (8 if include decimal point). Just like....
A while ago, as my first microcontroller project, I made a Pong game on a 5G—7 LED display, but then nothing became of it. Recently I was given a hard hat as part of a uniform (for an engineering competition) and told to customize it, and remembered pong.....
In case the robot being on the black line, it will always go ahead, and in the case of out of line and fall into a white area, it will determine whether to correct to the left or right, and thus remain on the black line. The sensors that will be used is the....
One of the most interesting shield that you can mount on the Arduino platform is certainly the ethernet shield, because enable numerous networking applications such as remote control of systems and users, web access and publication of data, and more yet, the....
This was my very first arduino project. Its great for beginners. Fade the color or the lights my moving your hands near it. It fades from a pretty purple blue to a firey red-orange. Its was SUPER easy to build, not to hard to write the code, and its really....
When I purchased the salve dial, it came with no instructions, packaging or other details. The only markings (other than five decades of grime) were those on the face (SMITH SECTRIC, ACELEC SYDNEY), and some markings on bracket holding the mechanism together....
This Lazy Old Geek is also an Arduino Geek. If you are an Arduino Geek, one of the common microcontrollers used by Arduinos is the Atmega328 chip. In order to use Arduino software, the Atmega must have bootloader software on it. I didn`t realize there was a....
ATMega168 or 328microcontroller chip w/Arduino bootloader (you can use the one on your Arduino for now!) $4. 00-$5. 50 - buy unbootloaded mouser (cheaper) / buy bootloaded sparkfun (expensive) I have created a Mouser project that includes everything you will....
*We were inspired by the following project, and looked at the code for it, but ended up developing our own. However, if you are interested in making an umbrella that plays musical notes due to press, this is a great page: For more information about the 4051....
This Instructable covers the assembly of a circuit capable of PWM-ing ( pulse width modulating ) a high-power RGB LED strip and programming an Arduino to cycle through a range of colors. In this context, high power is 9-12 volts. I will discuss how to....
This Instructable covers the assembly of a circuit capable of PWM-ing ( pulse width modulating ) a high-power RGB LED strip and programming an Arduino to cycle through a range of colors. In this context, high power is 9-12 volts. I will discuss how to....
Security system sensors such as motion detectors, reed switches, pressure mats, glass-break detectors, infra-red beams, and conductive film can be very handy for all sorts of things including home automation systems, interactive art installations and....
I`m going to show you how to use your Arduino to control up to 12 servos at once with minimal jitter. Using a simple serial interface you can control the position of up to 12 servo channels. Up to 10 snapshot positions can be saved and played back at any....
But the idea is to apply this code to other projects with 7 segment displays that I might do later. if you want to learn a bit more of 7 segment displays you can read more at this post I`ve made. ..
The Arduino Internet Gizmo is a USB, Arduino, and RFID device for web surfing. The gizmo works by placing an RFID tag on the top of the gizmo. The gizmo reads the RFID tag and sends the tag number via USB to a program running on a PC. The program looks up....
Basically I used the parts list that is on the first page of the Make Magazine article. But that list is for the harp which has 6 lasers so most quantites can be just 1. ..
Setup the lights on the breadboard like a traffic light. Red on top, then yellow, and then green. The small red and green are the pedestrian crossing signals. Again red on top and green just below. Put the buttons in so you have at least 2 pin holes space to....
I already have one project where arduino outputs audio signal to USB speakers via software 10-bits PWM. In first, I was not satisfied with quality of sound generated via PWM. There are just not enough speed in arduino engine to run PWM well. For example for....
Often government data sets available to us online are taken from major nearby metropolitan areas or infrastructural centers. With an easy to follow introduction to new softwares and technologies the urban sensor kit allows anyone to obtain location....
Measuring the consumption of a resource that has units by volume can be more tricky than it sounds. Use of resources such as water, gas, and even electricity is typically measured by gauges that determine either instantaneous flow rate or cumulative volume....
Water is a precious resource in many parts of the world, and many people rely on water tanks to supplement their water supply by storing collected rainwater or water pumped from a well or bore. But how do you measure how full a tank is Tanks are constructed....
I`ve been working on a project that will allow me to determine the number of sun hours available in a given spot, and track that over time, as a component of solar power installation design. The idea is to get a light detector in the sun, record the number....
I wanted to teach my Arduino to talk telephone, so I added a HT9000A DTMF chip to produce the familiar "touch tones" (upcoming projects will act upon "heard" DTMF tones, but with a different chip). The output is really low volume, so you may want to plug in....
Ever Imagined controlling your home appliances using your cell phone. You can find a lot of circuits for this application. But they make use of Telephone. I modified the circuit and redesigned it to make it compatible with normal cell phone headphone. Just....
The IR circuit can be used to switch devices using TV Remote. Normal circuits can switch only one device. But using this circuit, different devices can be controlled using same remote with different switches. In this circuit, we interfaced 8 devices. These....
Many times, I have written code for UART communication and when it came to testing, my laptop does not have a serial port. I bought a USB to serial port converter but it didnt worked. I felt frustated and finally thought of buying a Serial to Com port module....
One of my student has made a disgraceful robot that used two stepper motors and with a simple IR sensor. Yes, above picture is what I`m talking. Without battery carrying, a little bit torque of the stepper and misalignment of driving shaft, makes it crawling....
To assure that USB and serial segments are electrically isolated, we used an optocoupler (U1). The LED section of U1 is driven directly by DTR, so we should select a very sensitive optocoupler to prevent too much current flow from DTR (which is usually very....
This LED flasher circuit is a classic two transistor flip flop. This flasher circuit is very popular and it`s usually the first circuit to build when starting electronic circuit building hobby. Here is the schematic diagram of the famous LED flasher circuit:....
Perhaps the most challenging aspect of interpreting ladder diagrams, for people more familiar with electronic schematic diagrams, is how electromechanical relays are represented. Compare these two equivalent diagrams: Also, explain the operation of this....
This document was written with care, but errors cannot be excluded. Neither the company named above nor the seller assumes legal liability for mistakes, resulting operational errors or the consequences thereof. Trademarks, company names and product names may....
To power it up you need a clean stable source of 5 volts DC. This means that you either pick up a switching 5v DC power supply from our favorite JK Electronics, mail order one from Jameco or you will have to wire up a voltage regulator. Page 254 of Phys Comp....
The p-Wave Locked Loop provides instantaneously the p to p time interval of the applied ECG and enables us to perform heart rate variability studies on the basis of p_p variation. The first version of the PWLL started its processing action with the....
Zeroth-order resonant (ZOR) antenna manufactured on microstrip transmission lines has attracted great interest in the small antenna applications. Many techniques have been employed in order to miniaturize the composite right/left handed (CRLH) transmission....
We propose a comprehensive design procedure to design Field-programmable/Reconfigurable Analog Integrated CMOS circuits. Instead of repeatedly iterative simulation steps to achieve desired design specifications by fine tuning the W/L ratios of the FETs, we....
Sustainable satellite 802.11b wireless internetwork and how it was achieved...
This is an 8MHz amplitude modulated (AM) radio transmitter, which I built mainly for work, and also as an exercise in electronics (it is the first RF transmitter I`ve ever built). We wanted to have a simple radio transceiver design at our disposal for some....
Well, it took some time and a few failed attempt, but here it is. A neat project that lets you control two wheels or tracks from your PC serial port with no wires attached. I have it working at 2400 baud and that is about as fast as I can think. We assume....
Electronic circuits are presented in schematic form. A schematic is really a map showing the path the current takes through the various componenets. Each component is represented by a symbol, usually with either a label or a value (or both). The arangement....
The crime prevention bell device that I produced about 20 years ago works still in the active service. It worked many times to make the thief not operate well and not go into it. The bell keeps ringing generally though the bell rings as for the crime....
Does does it forget to be erased the small lamp and the headlight of the car, the battery go up, and is there what to the engine has not started once and twice everyone I am using it for a long time since then thinking about the circuit that prevents this in....
This is the circuit diagram for the Comfile CUSB-36R Programmed Christmas Lights. If it is a little hard to read drop me an email at keithsw1@yahoo. com and I will return a more detailed schematic. Basically the Comfile CUSB-36R can either directly drive....
RayDialer TX1 Channel Settings = Note: Switch pulls low, if ON. DIGIT 4 3 2 1 frequencies [Hz] 1 ON ON ON OFF 697 + 1209 2 ON ON OFF ON 697 + 1336 3 ON ON OFF OFF 697 + 1477 4 ON OFF ON ON 770 + 1209 5 ON OFF ON OFF 770 + 1336 6 ON OFF OFF ON 770 + 1477 7 ON....
Circuit schematic for the classic PIC serial programming cable. There is also a high resolution version of the image, and a Scalable Vector Graphics source file for printing. Please note that the SVG file might not display properly in some browsers.....
This option has the advantage that one does not need to change anything in the receiver itself. However, since any filter will give some attenuation of the signal, this will degrade the noise figure of the receiver, and thus limit the weakest signal which....
The circuit uses the very popular Sharp IR module (Vishay module can also be used). The pin nos. shown in the circuit are for the Sharp & VIshay modules. For other modules please refer to their respective datasheets. The receiver consists of a 555 timer IC....
This circuit not only indicates the amount of water present in the overhead tank but also gives an alarm when the tank is full. The circuit uses the widely available CD4066, bilateral switch CMOS IC to indicate the water level through LEDs. When the water is....
An awful thing happened a few weeks ago. I ran out of telephones to restore. All my payphone projects were finished. They were lined up on shelves doing what antique telephones do best - collect dust. I also wanted to write about a special project for the....
A good while back, I made the 1-key-keyboard project. Ever since it has always been in the back of my mind that the ATTiny microcontroller...
A wide range frequency meter is an useful tool for an electronics lab. This projects describes a frequency meter based on AT90S231 microcontroller that can measure input frequencies up to 50 MHz. The measured frequency is displayed on 6 digit multiplexed....
This project can measure the clock pulses fed to the Timer input of the AVR microcontroller. The Bascom code counts the clock pulses for 1 second and display it...
Here`s an another project, which makes an Scrolling LED display. Here 64 leds which are connected to an Matrix display. The Anodes are drived through an Driver...
I love the Arduino as a simple and accessible controller platform for many varied projects. A few months ago, a purchased an Ethernet shield for my Arduino controller to work on some projects with a mate of mine it was a massive hit for the first time, I....
Arduino Mega 2560 Board Tutorials Projects Drivers, Schematic and complete Information...
This is a very basic tutorial for atmega32 microcontroller beginners to get started. You can call this little program as Hello World for atmega...
Hello All, Today I will show you how you can make a simple RPM Meter using AVR ATmega8. The RPM meter we will be making is a contact less type...
Atmel On the PC keyboard PS 2 AT89C2051 keylogers circuit connection cable connects to the circuit between what is written in the wake of the program running...
Microcontrollers (MCUs) are fantastic little ICs that give an extra element of versatility to your electronics, robotics or other project. But they`re really...
In this project i have interfaced an GPS with AVR microcontroller, the ATtiny2313 gets the location from the GPS and display it over the LCD display...
You will get this done in 30 min. Step 1: Parts 1. 1 X any type of circuit board 2. 1 X Atmel AVR Atmega16 microcontroller 3. 8 X 330 ohms Resistors 4...
This project is used to automate the home appliances through Bluetooth enabled PC. You can use the USB Bluetooth at the PC side and an Serail Bluetooth...
