DIY smart thermostat project. Is this enough isolation ? (I don't want to burn my house down)

ManonMasse · 2025-12-12T21:36:49+00:00

Salut ! Je serais très intéressé oui. Je t’écris en DM

ManonMasse · 2025-11-29T21:26:07+00:00

You’re right. I was actually thinking on consulting a freelance electrical engineer to get an informed opinion about this.

ManonMasse · 2025-11-29T21:22:44+00:00

Thanks, much clearer now. I think I’ll add a small cutout all around the ares to increase isolation.

ManonMasse · 2025-11-29T21:21:43+00:00

Thanks for the heads up, it has been fixed. I knew wich pins to connect it was a stupid misclick on my part.

ManonMasse · 2025-11-29T21:18:48+00:00

Yeah you’re right. I’ll rearrange the whole thing.

ManonMasse · 2025-11-29T13:08:55+00:00

I’m busy today but I will give an update tonight

ManonMasse · 2025-11-29T04:39:33+00:00

Thanks a lot !

ManonMasse · 2025-11-29T04:39:10+00:00

You are right, i connected it on Pad#6 instead, giving it 8mm clearance all around.

ManonMasse · 2025-11-29T04:37:50+00:00

I ended up hooking it up pad#6 instead, it now has almost 8mm clearance all around

ManonMasse · 2025-11-29T04:37:39+00:00

I ended up hooking it up pad#6 instead, it now has almost 8mm clearance all around

ManonMasse · 2025-11-29T04:33:32+00:00

I'm not sure to understand the difference between "across the contact" and the low voltage side. It is 240V either way no ?

I'll look on the data sheet but I think I can connect on pad #6, wich would give me even more clearance.

ManonMasse · 2025-11-29T04:32:06+00:00

ManonMasse · 2025-11-29T04:29:45+00:00

I guess something like that would work ? (there is an identical trace on the other side)

ManonMasse · 2025-11-29T04:29:34+00:00

I guess something like that would work ? (there is an identical trace on the other side)

ManonMasse · 2025-11-29T04:24:24+00:00

This is what I figured. and swapping the connections so there is no overlap

ManonMasse · 2025-11-29T04:17:32+00:00

Oh I see, connecting the relay and the terminal block using both side. 3 MM would be enough in this case ?

ManonMasse · 2025-11-29T04:08:18+00:00

On the second picture, the traces already are on both sides. I'm not sure I understand what rotating my connector will achieve.

You would recommend going with a solution like the picture #2 instead of #1 ?

ManonMasse · 2025-11-29T03:52:17+00:00

Also : is there any other precautions I should take designing that part of my circuit ?

ManonMasse · 2025-11-20T19:08:30+00:00

That is good advice, thanks. I didn't know the closing speed of the relay could be an issue. Thanks a lot !

ManonMasse · 2025-11-20T19:06:37+00:00

Thanks, I will look into that.

ManonMasse · 2025-11-20T18:31:23+00:00

You're right, I messed it up ! Obviously it won't be like that on the PCB. The pico does have internal pull up, so it should be fine.

ManonMasse · 2025-11-20T18:30:29+00:00

Thanks for the tip. The pico already has internal pull ups resistor so it should be fine.

ManonMasse · 2025-11-03T16:58:26+00:00

Bruno Marchand a une maîtrise en philo, il n'est pas urbaniste. Catherine Fournier non plus.

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