Artemis Nano using 50 mA

Development Boards Artemis
1

Hi,

I’ve bought purchased probably close to 60 Redboard Artemis Nanos, and I have had a fair bit of problems. Sometimes the RTC doesn’t work, sometimes its other things.

Lately I’ve noticed that several of them use almost 50 mA!! Whereas the same sketch will use 4 mA on the regular Redboard Artemis. Is this a bad batch? A few bad ones? Or all of them currently?

Regards, Gaute

2

I am measuring the current using a CurrentRanger, 4.2V in on Vin and GND. I tried three brand new Nanos and they showed 4, 6, and 10 mA each with the default blink-program. I see one with 2 mA and one with 50 mA with my own program.

3

wooow… very weird.

Could it be the Apollo3 chip revision?

Try the attached sketch. Maybe it will bring some insight?

Get_Apollo_rev.zip (819 Bytes)