Here is a very simple ZX81 modification to replace the ugly modulated video output by a composite video signal.
I tried several modications from the WEB, but due to special video standard in France, none of them was successful on the ZX81.
So, here is my own adaptation. If it works for me, it should work for you !
The attached file contains the schematics and some pictures.
Have fun !
Buzz
Here is an "easy to make" Thermostat.
The goal was to replace an existing non working thermostat on a heat
accumulation panel. Instead of buying a new one I decided to make my
own.
The goal was to use basic electronic parts, to be cheap, fun to make and of course safe.
It is mainly based on a :
arduino (boarduino version) - board for the controler
TIL311 led digits - temperature visualisation (very expensive if you do not have some),
5V stabilized power supply (NDS lite power bloc)
DS18B20 - 1-wire temperature sensor.
BT12-600 triac - power switching (2000W load).
There is no PCB. It is up to you to make your own or use a prototype board like me.
Note
The package is not available as I have lost the Arduino source code...
Buzz
Expansion shield for Arduino UNO Version : 14/04/2023 This little board and the source code are part of a CS Bomb-like project to be us...
