nrf51822 Minew's Module is not recognized by NRF51DK

[fercholas]

Hi guys

I am trying to program a nrf51822 module but it is not recognized by the development kit.

These are the pins that I am using:

I can not see the module with NRFGo on Windows or on linux with Jlink console.

Any idea?

Thanks in advance!

[Martin]

Hi

I had a similiar problem. The cause was not enough current being supplied over USB (<=2.9V on DK, measured at VTG).

Try the following: Short circuit VDD over VTG to device.

This enabled me to programm all devices without any trouble. From my experience you need to have at least 2.95V to programm the NRF.

Best

Martin

[Martin]

Hi I experienced something like this with a custom board some while ago. The problem was another diode being between vdd on custom board which led to an additional drop of 0.15V which in course was then 2.7 on the SoC... Try to short an additional supply of 3V to VTG, disconnect P20 pin 2. This approach solved it for me. It's working ever since.