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Is it possible to create new footprints and integrate additional components into an already manufactured PCB?

If you want to hand-wire a circuit change into an existing PCB, gluing the parts into a spare area and wiring them up with solder-through enamel wire is certainly one option. See dead bug assembly. If ...
Dave Tweed's user avatar
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Is it possible to create new footprints and integrate additional components into an already manufactured PCB?

I don’t know if this is applicable to your situation but here’s something I did some years back: we had a batch of PCBs where some didn’t have an internal ground plane connected properly. Some boards ...
Frog's user avatar
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2 votes

STM32F4 TQFP100 part orientation

I also had this problem, the pin 1 marking is on the bottom left. Don't know why ST does that, its very confusing.
Voltage Spike's user avatar
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3 votes

STM32F4 TQFP100 part orientation

Pin 1 now at bottom left of your picture. With high probability you have wrong orientation of MCU at PCB. Decoupling capacitors and SWD connector are placed for chip with pin 1 on top right corner of ...
Michal Dudka's user avatar
3 votes

STM32F4 TQFP100 part orientation

The pin 1 mark is on bottom left. What is even more confusing is that your PCB lacks pin 1 marking, and the U7 designator is on bottom left, which would indicate that the MCU pin 1 should be on bottom ...
Justme's user avatar
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7 votes
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STM32F4 TQFP100 part orientation

It's a bit unfortunate that the 2nd ejector pin mark from the injection molding process looks so similar to the pin 1 identifier. In general, IC markings are always printed in the same orientation ...
Jonathan S.'s user avatar
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