Adafruit product 4078 on custom board

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Tjerkietje
 
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Joined: Thu Jun 20, 2024 8:58 am

Adafruit product 4078 on custom board

Post by Tjerkietje »

Hi,

I have tested a BLE Beacon sensor setup with the Adafruit Feather nRF52840 and connected a digital temperature + radar sensor to it. In that setup everything is working fine.
Now I have made a custom board with the same digital sensors and a Raytac MDBT50Q-1MV2 (Adafruit 4078). This is the same SoC as on the Feather nRF52840 board. I now have burned the bootloader and programmed the device with exactly the same code. Then the sensors are working fine but as soon as I call 'Bluefruit.begin' the program is hanging!

Does anyone have a clue what the cause of this can be?

Thanks,

Tjerk

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Tjerkietje
 
Posts: 4
Joined: Thu Jun 20, 2024 8:58 am

Re: Adafruit product 4078 on custom board

Post by Tjerkietje »

I now have solved this. It appeared that I did not put the correct capacitor values at the 32kHz crystal. Instead of 22pF I had placed 2.2nF!

Now the BLE beacon is working ;-)

Cheers,

Tjerk

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