I finally found a use for the Raspberry Pi 5 I accidentally ordered a few months ago.
I'm working on a project that involves monitoring and controlling some temperatures to pretty tight tolerances of ~1/10th of a degree.
I don't know why, probably because I have lots of them, but I decided to use ESP32s and Arduinos to control it all, and a PIC18 microcontroller thrown in for good measure, but the amount of wires and components involved has gone beyond a joke.
This is the rat's nest of shite I'd thrown at it before stopping and thinking "Fuck that!", and rethinking the whole thing.
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We were talking about ultra small form factor 'puters on this thread lately, and I mentioned I had a Raspberry Pi going to waste, so I decided to replace all of it with the Pi and web based GUI, and rather than have another rat's nest of wires, I thought I'd have a go at a 'Pi Hat' PCB, that plugs directly into the Pi's GPIO header.
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I sent the Gerber files to a PCB manufacturer in China on Tuesday afternoon, and ordered 10 boards from them. The boards arrived today
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10 boards, including 3 day delivery, minus a $10 new user discount , came to just €18.
I always assumed it wouldn't be financially viable to get PCBs made, unless you were buying large quantities, but this is a game changer. I'll never again use jumper wires for anything other than a prototype.
Next problem is that since moving to this house over 3 years ago, I still haven't unpacked and sorted my electronics stuff, so I have to go through 6 bags of components to find the parts I need... starting with this one
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I may be some time...