The main circuit is fitted in the tray I have made to fit under the dash on the driver’s side (it’s LHD).
Like all things I do it seems to have all got a bit too complicated but it does work!
I tend to try to make things in a modular way so that I only have to replace things that fail or don’t work properly.
The Arduino is fitted with a Prototype Shield to which connecting wires and a few components are soldered. The H-
I design PCBs on free Design Spark software without auto-
Software is next.
Alarm system construction