AVR micro as car battery Monitor - I am a proud, masochistic owner of a car made by Ford.  That itself should answer the question why I am interested in battery voltage monitoring.  For those not familiar with Fix Or Repair Daily syndrome, here is a story. __ Designed by © Madis Kaal

AVR microcontroller makes improved Motor controller - 10/17/02 EDN-Design Ideas - The circuit in Figure 1 provIdeas a novel method of reading the pulse train using an Atmel   (www.atmel.com] AVR processor, from a typical radio-controlled receiver, and to determine the velocity of a motor.  To capture the pulse train from a typical receiver, you need an external interrupt that triggers based on a rising and a falling edge Design by Anthony Di Tommaso, Cranberry Township, PA, and George Simonoff, Petersburg, OH

AVR pocsag in action. - A youtube video & blog showing a nicely featured implementation.   __ Designed by © 2003 Henry Carl Ott N2RVQ, all rights reserved'

AVR Programmer - To program some AVR microcontroller unit    (MCU) you will need an AVR programmer.  The better way to do that, is to buy some development kit like STK-500.  This kit have the advantage to give you serial port, LCD connector, SRAM socket, 8 switches, 8 LEDs, connectors for all of the ports of MCU and more, to one board.  I suggest to beginners, to start working with STK 500 or some else development system, it will help them very much.  For the people that are want to program only one piece of AVR, to make some circuit from this site and they don't want to spend money for any development kit, the solution is this ultra low-cost AVR programmer.  

AVR Programmer - About AVR Programmer This simple AVR Programmer will allow you to painlessly transfer hex programs to most ATMEL AVR microcontrollers without sacrificing your budget and time.  It is more reliable than most other simple AVR programmers available out __ Designed by rlocman @ rlocman.ru

AVR Programmer (#268) - The ATMEL AVR programmer works with the Windows program "Ponyprog" which works under 95, 98, XP, and can be found at http://www.  lancos.  com/prog.  html On board the AVRs that can be programmed are those in the schematic.  For other members of AVR family or the rest programmable ICs that Ponyprog can program, there is the J1 connector    (CON10) which allows expanding the programmer's hardware.  See Ponyprog's site for other's ICs Ponyprog circuits.  The JUMP1 jumper is there to connect the crystal's circuitry to the 8- pin AVRs or to disconnect it.  Some AVRs have internal RC oscillator and an external XTAL is not allowed or needed.  

AVR Programmer (#270) - The AVR family of `micro-controllers'    (uCs) have their own, non-volatile memory; your program and data are safe, even if all power is lost.  These chips also contain most of what is needed to program them.  If you connect an AVR to the parallel port of a PC loaded with the right software, a `programmer', then PC and uC will happily talk each other through the procedure.  Uploading a program to the chip takes just a few seconds and very little hardware.  It can even be done while the uC is `in-circuit', sitting in the apparatus you want it to control.  A program already in the chip can be erased by the same `programmer'; there is no need for ultra-violet light or a special power supply.  

AVR programmer/ISP downloader/debug interface - It can be used as regular programmer to program individual 20-pin chips, but also works as ISP programmer interface and provides RS-232 level converters.  Thanks to these, you can also program the chip and run it in directly ZIF socket    (in fact this is how I tested it, using demo copy of BASCOM-AVR from MCS Electronics) .__ © Madis Kaal

AVR Programmer-DIY - This simple AVR Programmer will allow you to painlessly transfer hex program to most ATMEL AVR microcontrollers without sacrificing your budget and time.  It is more reliable than most other simple AVR programmers available out there and can be built in very short amount of time.  

AVR Projects Collection | 20 ATmega MCU Projects - AVR is a family of microcontrollers developed by Atmel beginning in 1996. These are modified Harvard architecture 8-bit RISC single-chip microcontrollers. ATmega series are one of the types of AVR microcontrollers with features like 4–256 KB program memory, 28–100-pin package, extended instruction...__ 12/01/2016 - EFY

AVR STK200/STK300 ISP Dongle - In advance to my first AVR hardware project I needed an ISP programming dongle in order to burn the software into the AVR's FLASH memory.  Apparently there are several programming dongles available out there, like the Altera compatible dongle, Jesper's original, and the Atmel STK200 and STK300 dongles.  __ SB Projects

AVR Student Projects - Sure, Project Natal is the hotness and a little bird tells us PlayStation Move is pretty bodacious, but you don't have to buy a fancy game console to sooth your motion-tracking blues.  When students at Cornell University wanted to play Human Tetris    (and ace a final project to boot) , they taught a 20Mhz, 8-bit microcontroller how to follow their moves.  Combined with an NTSC camera, the resulting system can display a 39 x 60 pixel space at 24 frames per second, apparently enough to slot your body into some grooves -- and as you'll see in videos after the break, it plays a mean game of Breakout, too.  Full codebase and plans to build your own at the source link.  Eat your heart out, geeks.   __ Designed by Sean Hollister

AVR Studio 4 & the STK500 - To write firmware to an Atmel AVR microcontroller, you need a computer, free AVR Studio software, a hardware interface, and a little bit of knowledge.  This tutorial shows how to obtain, install, set up, and write a HEX file to an ATtiny chip using the STK500 programming board.  Covers fuse bits, jumper positions, ISP frequency, and target voltage.   __ Contact: David Cook

AVR takes under 1µs to process quadrature encoder - EDN-Design Ideas - 10/05/2015   A good example of tight interrupt coding to interface to a quadrature encoder.    Design by Ioan Ciascai & Viman Liviu

AVR Thermometer - Build a simple digital thermometer using 20-pin uC, AVR 90S2313 and DS1820.  The thermometer is capable of measuring temperature from -55C to +125C! with 1 degreeC resolution.   __ Designed by Wichit Sirichote

AVR thermometer / thermostat based on an Atmel ATtiny2313 - This is a simple thermostat that i designed to use with my central heating system.  When is not in use acts like a thermometer.  The prototype uses the AT90S2313 but it’s obsolete now, so i changed it with the pin to pin compatible ATtiny2313    (the photo shows my first prototype) .  __ AVR Projects Dim

AVR Thermometer DS1621 - This small thermometer board can be connected directly to PORTD of the AVR 2313 Project board.  It uses the Dallas DS1621 Digital Thermometer and Thermostat chip.  The DS1621 measures temperatures from -55° to +125° in 0.5° steps and doesn't need calibration or external components.  It has also a build-in thermostat with high and low set-points which can be programmed by the user.  Below you see the pin description of the DS1621.  

AVR Thermometer TCN75 - This small thermometer board uses the Microchip TCN75 device.  It is a cheaper clone of the LM75, it costs about 2, 50 Euro.  The TCN75 comes in a SO8 packaging.  The TCN75 is a serially programmable temperature sensor.  It has an output that is programmable as either a simple comparator for thermostat operation or as a temperature event interrupt.  Hysteresis is also programmable.  

AVR Thermometer TCN77 - The TC77 is a serially accessible digital temperature sensor.  Temperature data is converted from the internal thermal sensing element and made available at anytime as a 13-bit two’s compliment digital word.  Communication with the TC77 is accomplished via a SPI and MICROWIRE compatible interface.  It has a 12-bit plus sign temperature resolution of 0.0625°C per Least Significant Bit    (LSB) .  The TC77 offers a temperature accuracy of ±1.0°C    (max.) over the temperature range of +25°C to +65°C.  When operating, the TC77 consumes only 250 ìA    (typ.) .  The TC77’s Configuration register can be used to activate the low power Shutdown mode, which has a current consumption of only 0.1uA    (typ.) .  

AVR TV terminal - When you use microcontrollers in your designs, sometime you face a problem how to show user required data.  Several LEDs, 7 segment display or LCD module can be solution.  But if you must show a lot of information simultaneously, it can __ Designed by rlocman @ rlocman.ru

AVR: Monitor power supply voltage, for free! - While apparently being a very simple task, measuring the voltage of the power supply of your micro-controller can be very important and critical, specially for battery powered applications.  There are many ways to monitor the battery voltage level,  __ Designed by rlocman @ rlocman.ru

AVR200 Single Board Computer, Pt.2 - Second article has the assembly details and describes popular software development and programming options__ SiliconChip

AVR910-AVR Programmer - Easy-build programmer for AVR microcontrollers.  The firmware is based on AVR910 App Note by ATMEL.  The programmer can be used with AVR Studio, AVR-Prog, AVRDUDE and AVR OSP.   __ Designed by Wichit Sirichote

AVRbased oscilloscope - A mega32 based low speed oscilloscope.  It can be used to measure signals up to 5 kHz.  The input voltage range can be up to 24V AC or 30V DC  __ Designed by © Vassilis Serasidis

AVR-Based Serial Port IR Receiver - This is a simple IR receiver circuit which plugs into a serial port of a computer.  Okay, there are many other circuits of this kind, and most of them are even simpler, but this circuit has two major advantages:    (1) it uses an Atmel AVR RISC microcontroller    (an AT90S2313) instead of the usual PIC microcontroller and    (2) it uses a MAX232 for the generation of valid RS232 levels.   __ Designed by Klaus Stock

AVR-USB Remote Sensor - Remote Sensor is a wireless thermo- and hygrometer with an USB port on the receiver.  You can draw fancy diagrams of temperature and humidity for up to 16 wireless sensors.