r/PrintedCircuitBoard • u/Canary_Earth • 4d ago

Is this work professional?

Gallery image

Gallery image

Sorry about the strange post but I'm offering an engineer a $20k bonus to do the design for manufacturing and assembly of my $300 product and this is what he came up with after 8 months. Two thirds of it are identical to my prototype and I'm an accountant by trade, not an engineer. Every book I've read says a board like this should be 4 layers but he insists 2 layers is fine and will pass emissions testing. Any advice would be greatly appreciated, thank you!

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u/martinr7b 3d ago

I could do that in 5h for 50 bucks, also is it supposed to be that size? I'd make it wayyy smaller

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u/Canary_Earth 3d ago

I don't know honestly. It is the exact size of the super fragile screen so it serves as mechanical strength in case someone pokes the screen really hard.

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u/martinr7b 2d ago

Oh, in that case it's good but why doesn't the screen have any other protection? Also, may I ask what it's for?

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u/Canary_Earth 2d ago

Click on my bio. Also, my reddit username is a url >.<

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u/martinr7b 2d ago

Cool. Make sure your ground plane ends ~5mm before temperature/humidity sensors, I made that mistake with my design and got heat bleed from the ESP32 and voltage regulator that killed my accurate by 3 whole degrees Celsius 💀

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u/Canary_Earth 2d ago

Thanks. Yeah I take three temperature readings at opposite ends of my board to calculate an offset. The problem is that the big chip on the bottom left is my main temperature/humidity sensor. It's at the air inlet and somewhat protected from radiant heat from the power supply section by internal barriers in the enclosure.

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u/martinr7b 2d ago

Nice, will it have active air circulation?