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I would like to switch between two voltages, -12 and +12, this is no problem, as I will use two transistor circuits, but my question was, I get the voltage for the picaxe (5V) out of my PSU and I would also be getting the 12volts out of the same PSU, can I use a mutual ground in this circuit?

Hello, I'm working with picaxe some while, but to measure temperatures I always used the DS18B20. Now I would like to have a more accurate measurement for reading the temperature of an egg incubator. Now I was wondering which NTC to use. It has to be very lineair around 37.5 degrees since this...

I recently broke my picaxe 40x, I ordered a new one, and I'm testing my board, I connected my LCD and stuff, but my relais or contactor (don't know who it's said in english) doesn't work, because it requires 5 volts and the board only gives 2.7 volts on each pin out that is high.. What could be...

Recently I bought a protoboard for my 40x + an lcd display... It worked like a charm till yesterday. I started soldering the last wires, as I was finishing it... then suddenly I tried my program again, nothing. I tried downloading it again, but says it can't find the hardware, and I didn't...