We recently built a LED spinning top with message display. Its an improved version of a similar top published by Elektor in their December 2008 issue. The Elektor top can be spun only in one direction. The synchronization required to print message on the LEDs arranged along the radius of the top is achieved by […]
Direction Aware Messaging LED Spin Top using Tiny44 microcontroller Read More »
Play a prank on your friends (enemies?) by hiding a high-pitched beeper which sounds off at random time intervals. This instructable uses minimal parts. All that is required is: battery microcontroller speaker Why don’t I just use a 555 timer chip? You certainly could. I like this method because: 1. The ability to beep at
Annoying Beeper using Microcontroller ATtiny13 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 »
Gotta love microcontrollers.They do lots of stuff … you can find them in computer mice , traffic lights , toys , and almost all electronic devices nowadays. Well , this is a project that pushes an 8-bit ATMega32 microcontroller to the limits. As you guessed from the title , it is a game system. Here
Build the Penguin game system using ATMega32/644 microcontroller Read More »
Got some scavenged stepper motors from printers/disk drives/etc lying around? Some probing with an ohmeter, followed by some simple driver code on your microprocessor and you’ll be stepping in style. Step 1 Get to Know Steppers Basically, you’re going to need to figure out where all the little wires go. First step is to figure
Drive a Stepper Motor with an AVR Microprocessor using ATTiny2313 microcontroller Read More »
In this Instructable, find out how to control LCD’s with a ATmega8 and Bascom. You will need: – Breadboard – Wires – ATmega8 – Programmer – Bascom AVR (There is also a demo version for Free) – 10k resistor – 100k resistor – 10k variable resistor – 7805 Voltage regulator – 100 µF 16V electrolytic
Getting started with LCD's and Microprocessors Read More »
The Atmel ATTiny85 chip is an 8-pin MCU that is totally awesome. If you’ve been programming with the bigger boys (the ATMega series), these are a nice adventure – you’re rather limited in the number of output pins, but a creative design gives us a lot of flexibility in a very small package. You’ve seen
Apple-style LED pulsing using a $1.30 MCU using ATTiny85 microcontroller Read More »
here’s how to convert otherwise reasonable quality video into pixelated garbage and play it on a 2 color 8×8 led matrix, with no sound and only moderate sync. ingredients: – (1) 8×8 2 color led matrix – (1) atmel avr atmega168 – (2) 74hc595 shift register – (1) 3.3V regulator – (1) a linux system
Watch futurama on an 8×8 pixel screen using atmega168 microcontroller Read More »
This instructable will show you how to easily modify a readily available plastic case to hold and protect your AVR Dragon PCB. Atmel promotes their AVR Dragon as a low cost development product tool for use with their AVR microcrontollers. While the product does come in a fancy red cardboard box, unlike all the other
A protective case for the Atmel AVR Dragon using 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 »
