10 years ago.

working in mbed with external power supply>

i wanted to power up mbed with external power supply(battery). i could power up the mbed, but the problem is my program which i dumped into the mbed is not running? what may be the problem??

Question relating to:

Rapid Prototyping for general microcontroller applications, Ethernet, USB and 32-bit ARM® Cortex™-M3 based designs

How are you powering it? Which voltage, which pin?

posted by Erik - 27 Mar 2014

2 Answers

9 years, 5 months ago.

To work with external power supply, Is there any necessity to connet VB (pin3) a 3.3 volt something like that ? I mean, should i connect pin3 to 3.3 Volt? (I won't use RTC)

9 years, 11 months ago.

You must connect power to P2 (second pin). Then your program should run as expected.