MeLabs USB programmer header; costs $5.88cad at JLCPCB for 20.

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So now I don't even worry about moving my cumbersome DIY programming header around.

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And the pins are labelled so I don't have to keep digging up the specs to know what-goes-where. I could have made the pads a big bigger though.

I also made a 2x7 pin version for the 44780 LCD at the left. Those LCDs come in handy for debugging.