Temperature Monitoring

About a year ago I decided it would be a good idea to monitor the temperature in different rooms in the house and outside. The motivation was that, later, I might start controlling the heating by computer and the data would be useful. When we moved in I had already...

DIY Games Console

Another PIC project… this one using a 14-pin 16F688 and playing a version of “Breakout”. I might see if I can get a convincing version of “Space Invaders” to run on that 8×8 matrix too…. Usual setup of 74HC595 shift registers...

Relay Power Control

I could control the mains using a Triac and will probably try an experiment with that later. But using only components that I understand means a relay. So, following the excellent description on SparkFun you end up with a simple circuit with a NPN transistor that...

Power Supply

The approach I’m going to take with this project is to design and build each part of the mains controller as independent circuits and evaluate / play with them. When I have them all hooked up in a way that works and that I’m happy with, then I can draw a...

A Plugin Mains Socket Controller

I’ve thought of a new project. I’m going to build a plugin controller for a mains power socket. This will replace the cheap ones that I have for the telly/AV gear in the living room, that turns off the playstation, mythTV PC, amp, sub-woofer and telly so...

DIY radio controller for Lego

This was an experiment with a couple of Holtek remote control encoder and decoder chips (HT12E and HT12D) together with a cheap RF transmitter and receiver pair I picked up off ebay. OK, so the chips are not really designed for controlling models (more for opening...