Power supply
The modules can be powered in three different ways:
Ziff-Connector |
Solderpads |
USB |
|
Supply Voltage |
3.3 V |
3.3 V |
5 V (Power over USB) |
USB solder link |
open |
open |
closed |
|
|
|
Attention:
In order to avoid fault currents, the "USB Power Enable" solder bridge must be set correctly. The solder bridge is closed by default. The internal voltage regulator is now active and generates 3.3 V from the connected USB supply. If an additional 3.3 V is now supplied externally, fault currents occur.