Expansion Board 3.0
Introducing the Expansion Board 3.0, compatible with the WiPy 2.0, WiPy 3.0, LoPy, LoPy4, SiPy, FiPy and GPy.
NOTE: Does not include the WiPy
Features
- USB and LiPo battery powered
- Custom PIC USB to serial converter with automatic bootloader mode
- LiPo battery charger (BQ24040), with options for two different charging currents (100mA and 450mA)
- TPS2115A with reverse voltage protection
- MicroSD card slot
- JST style battery connector
- Power LED and charge status LED
- One user LED and one user switch
- Button to enter into “safe mode” easily
- Battery voltage monitoring via the WiPy ADC
- Lots of jumpers to enable/disable features
Differences between v2.0 and v3.0
- The FTDI chip as been replaced with a custom programmed PIC like on the Pysense/Pytrack/Pyscan boards. This allows our firmware update tool to automatically put the module into bootloader mode.
- Added a "Safe boot" button to enter safe boot easier. This button connects
P12
to 3.3v
and if pressed and held while the reset button is pressed on a Pycom module, the module will enter safe boot.
Documents
Pycom Expansion Board 3.0 Website