Did a bit more painting today, then wasted time playing digital /analogue electronics, making a ridiculously over complicated thermometer. Fun though.
This little gadget called an Arduino is programmable from a laptop computer via USB. You can wire in all sorts of electronic sensors, and drive switches, motors, etc with it. Once I get the hang , it opens all manner of possibilities based on sensing sound, light, heat, time or whatever, and then making something happen such as switching something on, or sending a message, or as you see here, giving a readout. Good innit?