After testing many systems development for PIC and AVR microcontrollers, none satisfy me. So I created this system with breadboard that has satisfied me. Step 1: More space free In this development system, I put two protoboards turned 180 degrees from each other. The space that is left to just enough space to insert a […]
Development system for PIC and AVR microcontrollers Read More »
after making a usbtiny isp programmer and using it for 6 months, i was looking at making another one for carrying around. i like the simplicy of the usbtiny isp design but would like to make it even smaller and take less parts. one thing in the original design that i want to change is
VUSBTiny AVR SPI Programmer Using ATtiny85 Read More »
This instructable will show you how to interface a 16-key keypad to your AVR microcontroller and read the key when a key is pressed. I’ll introduce the keypad first, then the 74HC922 16-key decoder IC as a pin-saving mechanism, then finally how to take the data and massage it so that you get the correct
16-key Keypad Decoding with an AVR MCU 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 »
The game Mastermind has been around a long time, and I remember getting a board version with colored pegs when I was a kid. I love this game, as it is solvable simply by pure logic. One player (or a computer/microcontroller) chooses a sequence of colors from a pool of available colors and then the
Build a Complete AVR System and Play Mastermind Using Microcontrollers Read More »
Yet another Portal-related instructable , but Different ! This one shows you how to : 1)Build a very cheap device that plays an 8-bit version of Still Alive from Portal 2)On the same hardware , but with a different chip , play the “radio tune” Here are both projects , in the same video (I
Portal "Still Alive" on AVR microcontrollers 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 »
This instructable describes how to charlieplex a bunch of 7-segment led displays. Charlieplexing of discrete leds has been the topic of a few other instructables. The Charlieplexing LEDs- The theory and the How to drive a lot of LEDs from a few microcontroller pins comes to mind. They are both excellent and should be read
Charlieplexing 7 segment displays using Microcontroller Read More »
Have you ever been chugging away at a project(s) and the project keeps growing and growing, while you add more things to it (we call that a Feaping Creaturism)? On a recent project, I was building a frequency meter and added a five function signal generator/frequency synthesizer. I soon wound up with more switches than
How to Read Many Switches with One MCU Pin Read More »
Component Required: IC1 – MT8870 DTMF decoder IC2 – ATmega16 AVR microcontroller IC3 – L293D motor driver IC4 – 74LS04 NOT gate D1 – 1N4007 rectifier diode R1, R2 – 100-kilo-ohm R3 – 330-kilo-ohm R4-R8 – 10-kilo-ohm C1 – 0.47μF ceramic disk C2, C3, C5, C6 – 22pF ceramic disk C4 – 0.1μF ceramic disk
Cellphone Operated Robot Using Microcontrollers Read More »
