USB Interface Circuits
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Attach any I2C client chip (thermo sensors, AD converter, displays, relais driver, to your PC via USB quick, easy and cheap! Drivers for Linux, Windows... -
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is the circuit quality preamplifier with built-in USB DAC for my Leachamp power amplifier. Scheme is PCM2902 datasheet..... -
This is a 5Volt to 12Volt DC-DC step-up (boost) converter circuitry with the intention of is especially ideal pro the USB powered applications. primarily of all a USB harbor has two current supply modes. beforehand detecting the connected device, it food.... -
The article on my RGB LED fader has been one of the most-visited articles on this blog. Since posting it, I`ve designed and built another microcontroller-based RGB LED project, this time controlling the colors from the computer over USB. The AVR needs to be.... -
Though some might argue that Serial port are things in the past, it is still the most popular port for those who are into electronic DIY. Building electronic device with serial port interface is cheaper than buiding one that uses USB. That is the reason why.... -
In older posts I mentioned, that I resoldered several ATMEL ATMEGA16 processors. So, I decided to build something usefull using this MCU. As this controller has more ROM and RAM, I decided to use only high level programming language- C. All software in these.... -
While cleaning up my computer files I stumbled over this schematic, which I used in the early stage of the USB LED Matrix development, and I thought it might be usefull to others. .. -
Here`s BH1417 USB FM Transmitter with built-in PLL circuit. Its low-frequency signal is converted into high-frequency, which can take any audio device with FM radio (stereo, car CD, MP3, DVD player, etc.), as a normal radio station. Transmitter power is.... -
Have immensely interest in the audio DAC design, and would like to DIY a low cost but powerful audio DAC Ok, now you have the chance, as you`ll learn to create your very own audio DAC today. You will use the circuit PCM2902 for this project, where you will.... -
Looking for an efficient USB charger that can operate from a 12V car battery This unit functions at up to 89% efficiency and can charge USB devices at currents up to 525mA. Best of all, it won`t flatten the battery if it`s left permanently connected, as long.... -
[caption id=attachment_45 align=alignnone width=500 caption=Serial RS232 to USB][/caption] This is simple RS232 Serial to USB Converter that... -
The schematic herein shows a minimum component solution to the USB battery charger using LTC4053 IC to achieve a fully compliant USB charger. This IC is a standalone linear charger for lithium ion (li-ion) batteries that can be powered directly from a USB.... -
The charger in this project is designed to charge two AA NiMH or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge 700mAh NiCds in about 1. 5 hours, 1500mAh NiMHs in about 3. 5 hours, and 2500mAh NiMHs in about 5. 5.... -
Here is a simple USB FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio by connecting it to an... -
Life in the 21st century would be almost unbearable without some of the computer peripherals that PC users now look on as essentials - take for example the USB powered teacup warmer; this device is obviously an invaluable productivity tool for all users but.... -
USB car charger adapter circuit design using LM317 regulator circuit.. -
The Universal Serial Bus (USB) interface has become extremely popular, due to its simplicity for end user applications (Plug and Play without restart). For developers, however, USB implementation into end systems has been more complicated compared to e. g..... -
Some still remember the serial RS232 port or ports, or there is also a call COM PORT because rarely posrt RS232 function has been replaced with a USB port. But I`m sure, to electronics engineering student, or other techniques to learn techniques such as.... -
Cigar Lighter Plug to USB Power Socket. This circuit is convert 12V DC source from car cigar lighter plug to become USB power sochet with 5V DC output. This circuit can be used to powering 5V electronic devices or recharge the rechargable battery from USB.... -
USB Powered, Stereo PC Multimedia Speaker Circuit Diagram. This circuit is powered by 5V DC source obtainable from the USB port of the Computer. When electrical power switch S1 is turned to on` position, 5V power supply is extended towards the circuit and.... -
Problems can arise with USB hubs that are powered from a PC when gadgets plugged into them draw too much current. This is often the case with devices fitted with USB cables that are too long or too thin, causing voltage drop. There`s no need to scrap your.... -
It is intended for use as a dual audio power amplifier in battery-powered sound players. Specifications of TDA2822M are low quiescent current, low crossover distortion, supply voltage down to 1. 8 volts and minimum output power of around 450 mW/channel with.... -
8051SBC USB & GLCD Expansion Board, Electronic Circuit Schematic Wiring Diagram, 8051SBC USB & GLCD Expansion Board... -
Without any USB to phone battery charger circuit we can charging phone battery using port on USB computer, but it will quickly damage the phone battery, and the battery will bulge. Because the voltage which was issued on usb is 5 volts, while the.... -
In this usb circuit using an IC as a modifier of digital voice data into analog so that it can be applied to a headphone, or again through the power amlplifier strengthened so that it can be heard through the speakers. IC used in this circuit using IC.... -
This is the circuit diagram of USB powered computer speaker, or it widely known as multimedia speakers for PCs. The circuit has single-chipbased design, low-voltage electrical power supply, compatibility with USB power from computer, simple heat-sinking,.... -
An year ago, I`ve shared a circuit of USB li-ion charger based on LM358opamp. The circuit had some problems as reported by commentators that inclide wrong direction of LEDs. Don`t post your email or phone number in the comment box. Only put email address in.... -
This is the second part of my USB tutorial for ATtiny2313 and V-USB library. In the first part we learned how to get 3. 3V from USB to power our circuits. In this part, we will expand our setup with following parts: Update: Some people have noted that the.... -
Having done half a dozen V-USB tutorials I decided it`s time to whip up something cool. As USB keyboards were an area untouched, I decided to make a small USB HID keyboard device that types a password stored in EEPROM every time it`s attached. A new password.... -
If you are looking to learn how to make your own USB device, this tutorial is perfect to start. Here you will see how to breadboard a simple USB generic HID device, creating the PIC18F firmware and finally creating the Windows interface for the device which....
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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.....
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