Pimoroni
Pycom Expansion Board 2.0
The Pycom Expansion Board 2.0 is a base board for Pycom development modules, providing USB connectivity, LiPo battery charging, a microSD card slot, and easy...
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The Pycom Expansion Board 2.0 is a base board for Pycom development modules, providing USB connectivity, LiPo battery charging, a microSD card slot, and easy access to all module pins. It is compatible with the WiPy 2.0, LoPy, SiPy, FiPy, and GPy.
Power the board via USB or a LiPo battery connected through the JST connector. The onboard BQ24040 charger handles battery charging with selectable current (100 mA or 450 mA), and reverse voltage protection keeps your hardware safe.
Key Features
- USB and LiPo Powered – FT234XD USB-to-serial converter with LiPo battery charger (BQ24040)
- Selectable Charge Current – 100 mA or 450 mA via jumper
- Reverse Voltage Protection – TPS2115A power path management
- MicroSD Card Slot – Onboard storage for data logging
- Battery Voltage Monitoring – Read battery level via ADC
- User LED and Button – One programmable LED and one user switch
- Status LEDs – Power and charge status indicators
- Configurable Jumpers – Enable or disable features as needed
Specifications
- Dimensions – 65 × 50 × 8 mm
- Weight – 18 g (43 g packaged)
- Battery Connector – JST
- USB Connector – Micro-USB
Compatibility
- Pycom WiPy 2.0
- Pycom LoPy
- Pycom SiPy
- Pycom FiPy
- Pycom GPy
Ideal For
- Prototyping IoT applications with Pycom modules
- Battery-powered wireless sensor nodes
- Data logging with microSD storage
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- LiPo
- A LiPo (lithium polymer) battery is a rechargeable lithium battery widely used in portable projects because it is light and compact. LiPo cells need correct charging circuitry and careful handling to stay safe, so equipment that supports LiPo generally includes charging or protection hardware suited to that battery type.
- microSD card
- A microSD card is a small removable flash memory card used to store data such as audio, images, logs or program files. Its capacity and formatting (often FAT32 or exFAT) affect how much can be stored and whether the card needs preparing before use.
- Power path
- A power path is the route electricity takes from one or more supplies to the circuit being powered. Understanding the power path helps you choose parts that can safely handle source selection, backup power, and supply switching.
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