Have you ever seen a business card with a computer chip embedded on it? This one does. It has an ATtiny85 microcontroller chip that stores all your personal details. You plug it into an USB port of your computer, and find the details about the person opened into a text editor. The firmware uses V-USB […]
USB business card with a computer chip board using ATtiny85 microcontroller Read More »
If you cannot afford to buy a USB programmer for AVR, don’t worry, you can make one by yourself. This programmer uses a Atmega8 microcontroller with a few external passive components. The good thing is you don’t need any USB controller because it is implemented in the firmware inside Atmega8. Yes, you are right, you
Open Source USB AVR Programmer for Students and Hobbyists using Atmega8 microcontroller Read More »
This instructable will show you how to read the number on a binary pushwheel or thumbwheel switch using LED’s or an AVR microcontroller (I’m using an ATmega328p but this can be adapted for any AVR or probably another microcontroller of your choice). Multiple thumbwheel switches can be strung together to make an electronic combination lock,
How to Read Binary/Hex Thumbwheel Switch with an AVR Microcontroller Read More »
The other day I was wanting to check on one of my AVR‘s but I was upstairs and god knows it was too much of a hassle to go downstairs to where the microcontroller was. But, there were two idle computers sitting upstairs next to my lazy butt, so I had a half-day from work
Telnet to your Arduino/AVR! Read More »
video USB RFID Reading Keyboard Demo This is a step by step tutorial on how to build a RFID tag reading USB keyboard using the USnooBie. This tutorial is provided with the project files. The code files are heavily commented with references to relevant documentation. Watch the two part videos below to see how
USB RFID Reading Keyboard using USnooBie Read More »
What do you do with an old phone, a microcontroller and lots of time? You hook the old phone’s LCD screen to the computer USB of course! In this project we’re going to communicate with a Nokia 3310 LCD display over USB! How are we going to do that? We’re going to connect the LCD
Connecting Nokia 3310 LCD to USB using AVR Read More »
It used to be that the number of different microcontroller chips available to the hobbyist was pretty limited. You got to use whatever you could manage to buy from the mail-order chip dealer, and that narrowed down the choice to a small number of chips. But times have changed. Digikey lists over 16000 different line
How to choose a MicroController Read More »
Ever wanted to be “logged in” to your AVR microcontroller? Ever thought it would be cool to “cat” a register to see its contents? Have you always wanted a way to power up and power down individual peripheral sub-systems of your AVR or Arduino in *real time* ? Me, too, so I wrote the AVR
AVRSH: A Command Interpreter Shell for Arduino/AVR Read More »
This instructable walks you through programming and using the Boston Android Xmega evaluation board to work as a simple arbitrary waveform generator taking advantage of the integrated 12bit DAC and high speed DMA controller. I have provided precompiled firmware as well as source code which can be loaded onto the device and configured via a
Atmel Xmega USB/Serial Arbitrary Waveform Generator Read More »
I tend to have good ideas when I don’t need them but when I need them I always face the black wall of no inspiration. I had to come up with an idea for a present for Jeff-O. After a long week without inspiration, I came up with this: A multiformat clock. It displays time in:
The Multi-format Clock – Gift contest Read More »
