Class D amplifier for ATtiny15L microcontroller circuit diagram. These units can get acquainted with one embodiment of the amplifier is Class D. Controller ATtiny15L AVR family firm Atmel is perfectly suited for this purpose, because it contains a ten-digit....

Using an Atmel ATTiny2313 microcontroller and an HD44780-compatible character LCD display, along with a reed switch and some magnets, I was able to construct a tiny speedometer/trip computer for a soapbox derby cart. It measured the speed of the cart using a....

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The code I used on the ATtiny85 is now included as tiny50hz example sketch in the Ports library, eh, I mean JeeLib. Here are the main pieces: Nothing fancy, though it took a fair bit of datasheet reading to get all the ADC details set up. This sketch....

The microcontroller won`t be able to drive the gate of Q1 very hard (usually GPIO pins can only source a few milliamps) so your turn-on and turn-off will be very slow. This will limit how well your high-side switch will behave. You don`t have a....

Smart Valentine`s Day gift - a movement-sensing box of chocolates with an LED message! Circuit diagram and How to build the project on ATtiny13 and Arduino...

This is an IR remote control for Nikon cameras. It is compatible with the Nikon ML-L3 remote control. Supported cameras include: D40, D40X, D50, D60, D70, D70s, D80, Coolpix 8400 8800. This design is based on an idea from The circuit is extremely simple: an....

ISP Programmer Please buy USB programming cables at last and start using AVR Studio, avrdude etc. The source code is now abandonware and it will stay on Sourceforge for ages. This software supports programming of Atmel microcontrollers 89Sxx (`51), ATtiny,....

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Describes reading a thermistor using an Atmel ATtiny45 or ATMega168 microcontroller to drive two fans to cool a PC installed in a kitchen cabinet. Include a table for converting the BC1482 resistance to Fahrenheit....

I want the final package to be as invisible as possible, and without any wires / adapters / etc. Obviously that requires me to run this project from a small battery. To preserve power, I`m thinking about putting the ATMega (eventually probably the ATTiny)....

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For relatively small (less number of pins than ATmega328) projects, ATtiny series, ATtiny45 or Attiny85 are good choice in terms of its physical size....

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...

Atmel`s ATtiny1634 8-Bit AVR ® Microcontroller is based on the AVR ® enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny1634 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to....

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....

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Building a serial servo controller to learn about electronics and assembly language as part of my hexapod robot project. Quite early on I decided that I needed more I/O channels than my ATTiny2313 that I was using at the time supported so I investigated some....

Small inductance changes on the order of 0. 01% can easily be sensed over a wide range with a simple circuit connected to a serial port ( see the figure ). Using a classic Colpitts oscillator interfaced to an eight-pin Atmel ATtiny12-8 microprocessor, the....

With the following circuit you can easily program the AVR microcontrollers AT90S1200, AT90S2313 (or ATtiny2313), AT90S8515 and AT90S4414, using the freeware programmer PonyProg by Claudio Lanconelli. You can download the program for free from the author`s....

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....

For the last year I`ve been working on a prototype for a Solar Inverter that can be Grid Intertied. A solar inverter takes the 12V DC (or other voltages) from...

This is a four-channel temperature measurmet adapter that works without external power supply. It will suitable for measureing temperature and logging its data with a PC. The circuit diagram is very simple and no adjustment is required, everybody will able....

Usually we see Digital clock on LCD or 7 segmen. But, this AVR Digital Clock which is designed by Ficara Emilio displayed on Oscilloscope. The project use ATtiny 2313 as the main controller. What an interesting microcontroller project. Source code and....

The device described here does just that. The circuit connects to the doorbell circuit - taking power from the 18 VAC from the doorbell transformer and switching power to the doorbell circuit most of the day. The user interface is a pushbutton, a toggle....

The National Physics Laboratory broadcasts a time signal, previously known as the Rugby clock but now called "Time from NPL." Its most commonly known as the MSF signal due to it originally being identified in Morse code those letters. It is broadcast from....

This firmware is intended to run on an Atmel ATtiny2313 operating from a 4, 8, 10, 16, or 20 MHz clock or an AT90S2313 operating from a 4 MHz clock. As far as I have been able to determine, the ATtiny2313 and AT90S2313 versions are interchangeable, and the....

Study the Analog to Digital capabilities of Atmel ATtiny26. This tiny but mighty IC is really a miracle. One special thing is the internal 10-inputs multiplexed ADC circuit which can covert analog voltages to bytes. This check circuit uses only 3 inputs. Of....

This is design for a frequency meter based on AVR microcontrollers. Maximum input frequency is specified to be 30 MHz in the multi-chip configuration, and in single-chip configuration, there are both 5 MHz and 10 Mhz versions operating with 10 and 20 MHz....

48 LEDs total, 24 on each side of the board. This gives higher resolution patterns, and they can be seen from both sides of the bike. The LEDs are controlled from a series of 74x373 ICs connected to an 8 bit bus on the microcontroller. As opposed to shift....

CodeLock AVR electronic combination lock is realised with Atmel AVR microcontroller AT90S2313 or ATtiny2313. Program in hex code is 2 kB long. User code is consisted of 1 to 4 digits. If you buy the chip than user code is consisted of 1 to 8 digits. If the....

I had been putting off writing a driver for some 24LC64 and 24LC256 EEPROMS I was thinking about using, when I came across a temperature logger application written by Seal Ellis. The Temperature logger was posted on on www.avrfreaks.net on January 10, 2002,....