The datasheet of the Expansion Board is available as a PDF File.
Expansion Board Datasheet
The pinout of the Expansion Board is available as a PDF File
Expansion Board 3 Pinout
Be gentle when plugging and unplugging from the USB connector. Whilst the USB connector is soldered and is relatively strong, if it breaks off it can be very difficult to fix.
The Expansion Board features a single cell Li-Ion/Li-Po charger. When the board is being powered via the micro USB connector, the Expansion Board will charge the battery (if connected). When the
CHG jumper is present, the battery will be charged at
450mA. If this value is too high for your application, removing the jumper lowers the charge current to
To use the battery, pull
P8/G15 high (connect to
3v3). If you want to use the SD card as well, use a 10k pull-up.
Pysense/Pytrack/Pyscan boards. This allows our firmware update tool to
automatically put the module into bootloader mode.
3.3v and if pressed and held while the reset button is pressed on
a Pycom module, the module will enter safe boot.
dfu-utilupdate should be performed