Design Review of nRF52840 Keyboard

[David Colburn]

Hello,

Recently I designed a wireless keyboard with a nRF52840 as the main processor. I had the board reviewed by a friend and had it produced by JLCPCB. I have assembled the board, but there is an issue that makes it so I am unable to connect to it with Bluetooth or SWD. I will attach the schematics and board design below. If anyone sees an issue that would make the board inoperable please let me know. For reference, the nPM1300 does work and I was able to confirm the voltages.

Thanks

[Ressa]

Hi,

Can you please share the Gerber files for layout? it is not possible to check the layout with uploaded images. And also a PDF from schematic ? 
* Are you able to program the device at all ? 
* I don't see any 32 kHz crystal in your schematic. Have you changed the configuration to use internal RC instead of external low freq. crystal ? 

[David Colburn]

I60W-Keyboard-v0.4.zip am not able to connect to the device through USB or SWD. Here are the gerber files.

[Ressa]

First you need to get  SWD access up and running. That's is the only way for connection without any firmware on chip. I cannot find a major issue in design files. Can you share some detail about how you are trying to use SWD ? if possible any log or error to see ? What type of programmer you are using ? 

[hmolesworth]

David Did you even try this? "Test by removing R9 and switching back on". Feedback would be helpful ..