Solar window heater update


I’ve been fixing the window box heater. It’s been working OK over winter but not to its maximum. I’ll rebuild it over Summer and add a temperature control so that it only comes on when the air temperature in the box is over 20°C. I’ll use thick glass as the cover instead of thin perspex…

Slightly dodgy solar setup


My dodgy experimental solar setup. Its just pieced together for today to see if the second hand regulator works. It must be working. We’re catching 10.5V of free electricity when its overcast. This jumps up to 11 when the sun shines fully. Of course, thats not enough to charge the battery. Good connections and better…