KAmodRPi Pico Quad Expander: Difference between revisions
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Created page with "__jzpdf__ ===== Description===== <b>KAmodRPi Pico Quad Expander - Quad Pin Expander for Raspberry Pi Pico</b><br> The board features a standard 2x20-pin female connector for direct connection to the Raspberry Pi Pico. It also has four sets of 2x20-pin male connectors for connecting additional expansion modules. The board also features a reset button, a USB Type-C power connector, four I2C Qwire connectors (Qwiic/STEMMA QT compatible), additional 20-pin male connectors wi..." |
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Latest revision as of 10:27, 17 October 2025
Description
KAmodRPi Pico Quad Expander - Quad Pin Expander for Raspberry Pi Pico
The board features a standard 2x20-pin female connector for direct connection to the Raspberry Pi Pico. It also has four sets of 2x20-pin male connectors for connecting additional expansion modules. The board also features a reset button, a USB Type-C power connector, four I2C Qwire connectors (Qwiic/STEMMA QT compatible), additional 20-pin male connectors with all RPi Pico signals, and pinout labels on the top side for easy prototyping.
Basic Parameters
- Standard 2x20-pin female connector for Raspberry Pi Pico
- Four 2x20-pin male connectors for expansion modules
- 20-pin male connectors with all RPi Pico signals pinned out
- USB Type-C connector that supplies power to all modules connected to the expander
- RESET button
- Four 4-pin 1mm JST SH I2C Qwire connectors (compatible with Qwiic / STEMMA QT)
- Clear labels for all pins
- Dimensions: 59 x 170 mm
Standard Equipment
| Code | Description |
|---|---|
| KAmodRPi Pico Quad Expander |
|
Electrical Schematic
The Electrical Schematic for the KAmodRPi Pico Quad Expander module can be downloaded here.
Power
A standard USB power source should be connected to the USB-C connector. The USB-C power supply is protected by a 3.5A polymer fuse and connected directly to the VBUS line and via a Schottky diode to the VSYS line. The PWR LED indicates the presence of VSYS voltage.
I2C Qwire Connector
The KAmodRPi Pico Quad Expander board features four 4-pin "I2C Qwire" connectors (JST SH 1 mm) compliant with the "Qwiic" / "STEMMA QT" standard. This connection standard for I2C-equipped modules allows for quick connection and expansion of module functions without the need for soldering. The Qwire connector pins are controlled by the "I2C0" interface on pins "GP4 (SDA)" and "GP5 (SCL)" and by the "I2C1" interface on pins "GP6 (SDA)" and "GP7 (SCL)" .
Additional Pins
The KAmodRPi Pico Quad Expander board is equipped with two additional 20-pin male connectors, which provide access to all signals from the Raspberry Pi Pico module.
Usage Example
Before connecting the modules, make sure there are no signal conflicts (e.g., two modules using the same signal line) between the connected expansion modules.
Dimensions
The dimensions of the KAmodRPi Pico Dual Expander board are 59 x 170 mm.
