This morning (2009-12-31) I built my 4th AVR programmer. USBasp. I built this one because I wasn’t completely happy with my 3rd programmer and because I want to play with a software USB stack. I do know that it works (I just reprogrammed 2 old projects just to try it out. Programming seems to be […]
The programmer I use is built from a kit I bought at Tuxgraphics. There are several reasons I bought this kit. It is open source, works with avrdude. It connects to USB. It is a lot faster then my old programmer (Programs an ATMEGA8 in about 5 seconds). It is cheap. I bought the kit
Beamer Control: Schematic Source code I made this project for Henk. He has a beamer for watching movies and a motor controlled screen. The purpose of this project is very simple. If he turns his beamer on, the screen must to down. And if the beamer turns of, the screen must go up again. This
Door Opener: Schematic Source code I made this little project for Hans, yet another brother of mine. (I have 5 brothers.) He had a garage door to control and bought a little RF transmitter and receiver to control his door. Leo made a nice cabinet with relays to control the 400V 800VA motor. They turned
Dimmer: Schematic Source code I made this project for Leo, a brother of mine. We had an old remote control of a video recorder laying around and he wanted some dimmers for all the lights in his house. I didn’t have much experience with programming microcontrollers at that time but I was willing to start
This is the second stepper motor driver circuit I build. The first one had 4 linear current sources and got so hot it was barely usable. It had some cool leds though. When I was searching for a better schematic on the internet I couldn’t find any to my linking. I did find some commercial
Designing a professional digital oscilloscope is a pretty complex task wich makes them also pretty expensive. Therefore I concluded it’s nothing more than a daydream to design one of those. It’s far more realistic to limit the design of this instrument to something a bit more realistic. If you connect something like the JYE Tech
LC Meter: Schematic Source code This is the project I am currently working on (2010-01-23). The LC meter is based on Elmcie or Elsie and other similar LC meters. This project is in a very early prototype stage and is at the moment only capable of measuring inductors. Even though I have build the first
Katja & Guido at Tuxgraphics sell a very affordable little AVR controlled power supply. That power supply can be controlled by sending it commands by I2C. Because I already have a pretty universal network connected to my PC it seems very logical to me to modify the software for that power supply to accept commands
When we talk about wireless robot vehicle, we usually think about the RF circuits. But this project is different. It uses a mobile phone to control the motion of a robotic vehicle, and therefore, the range of operation is as large as the coverage area of the service provider. The project is based on an
Cellphone controlled robot vehicle using ATmega16 microcontroller Read More »
