frankzappa
Well-known member
I made a PCB a while ago and it's working great but I decided to redesign it and break out the USB from the back of the teensy by using castellated holes via an ESD protection circuit, here is the IC used: https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885254287736832
Soldering went well but I must have messed something up because I can't upload anything. It gets power but it seems it doesn't get the data lines from the USB. I'm getting a slow orange blink and then when I press the program button I get a slow red blink which should indicate I have power but no data.
I tried swapping the d+ and d- on the JST connector but no difference.
Can someone take a look if I made a mistake?
Or maybe those pins on the bottom can't be used to program it?
Soldering went well but I must have messed something up because I can't upload anything. It gets power but it seems it doesn't get the data lines from the USB. I'm getting a slow orange blink and then when I press the program button I get a slow red blink which should indicate I have power but no data.
I tried swapping the d+ and d- on the JST connector but no difference.
Can someone take a look if I made a mistake?
Or maybe those pins on the bottom can't be used to program it?
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