Debugging
Probably doesn’t help you now, but I would have checked in and asked for help before you desoldered the MCU. It’s hard to desolder the MCU and it’s possible you damaged a pad or trace.
What MCU did you build with? When you plug in the board, does the MCU get warm near the USB connector?
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Also, can you clarify how the usb-c light was “telling you that you flashed the firmware?”
I just want to make sure I understand what state the board was in so we can diagnose it.
Unknown User•2y ago
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Gotcha! Okay, thanks for the extra info. So in your case, it started off with the LED on, and then you flashed the firmware, and then it turned off. Is that correct?
Unknown User•2y ago
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Got it. Do you happen to remember which firmware file you flashed? Did any other features work, like the underglow LEDs or encoder (if you soldered them)?
perhaps you still have the hex file in your downloads or something and can find it, in case you don't remember.
Unknown User•2y ago
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Will you please send a clear picture of the top and bottom of your board? Did you by chance try toggling caps lock with a different keyboard and seeing if the LED on the Bit-C toggled as well?
Unknown User•2y ago
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It sounds to me like there might be multiple things going on, as none of the features of your board were working. Usually at least some of them will work. We'll get it figured out.
Unknown User•2y ago
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Thanks, mind snapping a close-up pic of the top and bottom of the MCU from one or two angles as well?
Unknown User•2y ago
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Your header pins are soldered on incorrectly. The plastic part should sit between the Bit-C and the board, not above the Bit-C. Is this how it was before you removed it as well? If it was attached this way, odds are many of the contacts wouldn't be soldered at all, leading to connectivity issues like you described.
Unknown User•2y ago
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Yeah, you’ll want to do that. You might need to clip the headers in order to get it off, but the good news is if you do that the Bit-C will probably come off relatively easily!