nRF-51 DK out of order

[Adrien C.]

Hello,

Since 2 weeks, I use heavily my nRF51-DK (PCA10028), with mbed compiler to make a BLE enabled device. But, since few days, when i have tried to cut the SB9 in order to measure the power consumption, I can't run correctly my apps, for example, apps that are working well in other platforms such as Arch BLE, are not working anymore with the nRF51-DK, with no BLE signal detectable by a phone, and no LED working.

Any ideas to fix it ?

[Petter Myhre]

You need to put a jumber on nRF current measurement pins.

[Adrien C.]

Thanks a lot, is that due to the fact that I cut a jumper (SB9 I guess) ?

[syntroniks]

Yes, that's true. What it allows you to do is solder a low value resistor in series with the voltage supply. You can then measure that voltage drop to determine current comsumption.

Alternatively you could measure the current directly which I suppose is the intended use., which would be inaccurate if you added a resistor. I added a resistor :)