MCU Circuits
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Once i had my SX-64 repaired i wanted to do something cool with it. I learned about people who added ethernet interfaces to their C64 and since i had some spare ones of the required ethernet chips, i decided to build the net64 cartridge. See the image above.... -
This page describes a cheap and simple yet flexible HDMI to parallel 3.3v interface. This allows to connect most LCDs frames to the beagleboard without any further interface required. I am using this myself with some 7inch 800x480 displays which i am using.... -
The demonstration circuit operates in the HM2007's manual mode. This mode uses a simple keypad and digital display to communicate with and program the HM2007 chip. When the circuit is turned on, the HM2007 checks the static RAM. If everything checks out the.... -
Personal Safes are revolutionary locking storage cases that open with just the touch of your finger. These products are designed as "access denial" secure storage for medications, jewelry, weapons, documents, and other valuable or potentially harmful items..... -
Now-a-days every institution needs automation. As a part of college automation, we have decided to do a project Voice Interactive System for College Automation . Our project allows the user to know the student`s attendance and marks quickly through the.... -
As you see in the circuit above the four pins "Controller pin 1", 2, 3 and 4 will control the motion and direction of the stepper motor according to the step sequece programmed in the controller. As already discussed in case of L293D, Here in this circuit.... -
Are you a beginner in micro controller projects and are you stuck where to start from if yes, then this is one of the simplest mini projects that you can start from. This mini project will give you a clear understanding of programming your micro controller..... -
entering of the password, the application as in this case "led" will glow. In this Digital locking system project you will learn more about interfacing keypad and 16x2 LCD to your micro controller along with the code. Since this project has been made in.... -
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... -
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... -
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... -
This Instructible is entered in the Category: 13 - 18 of the National Robotics Week Robot Contest... -
This project gives you a simple temperature controlled fan. If the difference between real temperature and the user temperature is high then the fan will run at... -
This is a low cost way of measuring temperature and humidity with a computer interface and is intended to be an entry level project for high school students on a tight budget. .. -
Tengu derives its name from a mythicalJapanese creature known for getting intomischief. Our Tengu, however is more earthly in nature. It responds to voice and sounds and takes on different facial features depending on the intensity of the sound. If no sound.... -
So this is a bit of a continuation on my 555 timer based PWM controllers, but now using microcontrollers and MOSFETs instead of 555 ICs and transistors. I made 2 versions, one with switches for speeding up and down and the other with a potentiometer like the.... -
The following circuit shows about AT90LS2323 Microcontroller Circuit Diagram. Features: 2.7 ? 6 volts, Can work in all 2323 chips. .Component: ... -
This circuit can be used as a low cost SRAM and Microcontroller-Microprocessor Battery Backup. All the diodes are 1N4148, The diodes prevent battery discharge back to power source. D8 gives a one way path to charge Battery thru R13 which limits current. D4.... -
To drive relay you need more than 20mA the current can one pin drive. This is why you cannot connect relay directly to microcontrollers pin. To drive relay you need to connect simple amplifier made of one transistor. This circuit is more general as instead.... -
Diode D1 and resistor R1 provide the VDD isolation when programming the 24 pin devices. The jumper J3 must be shorted for 24 pin devices, and open circuit for 28 pin device programming. Following EEPROMs are pin compatible with their EPROMs version, .. -
IR remote control is a device you can find everywhere where you can find TV, VCR or home theatre. Why not to use one of them for controlling your own devices like light, air conditioning etc. As we know remote control devices uses IR light. This is invisible.... -
ISP programmer with circuit diagram for AVR Atmega32 micro controller.This ISP burner circuit is an adaptation of Pony programmer and uses ponyprog software.. -
Usually keyboard is connected by using matrix type of connection a‚ rows and columns. For instance for 12 button keyboard wee need 3 4 digital inputs of microcontroller. There is a way to build keyboard and connect to microcontroller using only one wire. For.... -
In many situations you need some kind of human interface to your microcontroller project. In this example is interfacing AVR microcontroller to standard PC AT keyboard described. According to keyboard timing diagram in bellow picture the keyboard transfers.... -
This be power motor controller 12V circuit. with a signal MCU Control be high class voltage , about 3V. It can motor control turn advance or walk go backwards... -
This circuit shows about Remote Control Circuit Diagram Through RF Without Microcontroller . Features: simple remote control circuit, uses radio ... -
The electrical circuit diagram of this temperature control circuit consists 3-pin analog temperature sensor (LM35DZ), a built-in A/D converter microcontroller (PIC16F877), and the heater driver (IRL1004).. -
A digital clock is one that displays time in digital format. The circuit described here shows the time with double-digit "minutes" and two digits `seconds` in four seven segment displays. The segment of seven switches are interconnected with 8051.... -
This ISP Programmer can be used either for in-system programming or as a stand-alone spi programmer for Atmel ISP programmable devices. The programming interface is compatible to STK200 ISP programmer hardware so the users of STK200 can also use the software.... -
Real time controller is a device used to exercise control over household device continuously ongoing and scheduled. The series of Real Time Controllers with microcontroller AT89C2051 which dituls in this article is a tool that can do that serve targeted. The....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
Popular Circuits
Can be directly connected to CD players, tuners and tape recorders. Simply add a 10K Log...
Circuit oscillates because the transistor shifts the phase of the signal 180° from the base to...
This NiCAD battery charger circuit charges the battery at 75 mA until the battery is charged,...
After some more time with the circuit, the variable pot certainly brings in more useful results...
The following circuit diagram is a simplified application circuit of the TDA8932B/33(B) device...
3F155 circuit shown in FIG. It uses manual control mode. The figure, a self-excitation braking...