danrogers
Member
Hi all. I am building a thermostat for my new place. I'm using an arduino nano and a 20x4 lcd screen, with thermistors placed in about 6 rooms.
I have two questions at the moment - should I connect my low voltage ground (5v) to the ground on the mains feed?
Also, I want the wall thermostat to be powered at all times, looking at the schematic (attached) I think the power (at junction labelled LIVE) will only be available when the timer is operational? SO I will have to run 5 wires to my stat, permanent live, timer live, neutral and switched return and gnd?
I have also included the PCB layout if anyone is interested.
I have two questions at the moment - should I connect my low voltage ground (5v) to the ground on the mains feed?
Also, I want the wall thermostat to be powered at all times, looking at the schematic (attached) I think the power (at junction labelled LIVE) will only be available when the timer is operational? SO I will have to run 5 wires to my stat, permanent live, timer live, neutral and switched return and gnd?
I have also included the PCB layout if anyone is interested.
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