Pico Expansion Plus S1
An upgraded expansion board for the Raspberry Pi Pico
Pico Expansion Plus S1 is an enhanced expansion board designed specifically for the Raspberry Pi Pico. Compared to the previous Pico Expansion Plus, this upgraded version adds several practical features including a full-color RGB LED, Micro SD card slot, buzzer with switch, 4PIN header for DHT11/DS18B20 sensors, and a standard 3.5mm audio jack.
Key Features:
- GPIO Status LEDs: All GPIO pins are equipped with onboard LED indicators. When switch S1 is turned ON, each LED reflects the corresponding GPIO's high/low status. To disable the display, simply turn S1 OFF.
- Dual 2×20PIN Header Rows: Allows direct insertion of the Raspberry Pi Pico or connection to peripheral modules via DuPont wires. Each pin is clearly labeled for ease of use and measurement.
- 4 × HY-2.0-4P Connectors: Support quick connections to external modules via 2.0mm cables. The power voltage can be selected via S2 (3.3V or 5V), and all connectors share the same VCC level.
- SPI1 Interface: One set of pin headers leads out the SPI1 interface, aligned with the selected VCC (3.3V/5V), enabling connection to SPI-based modules using DuPont or flat cables.
- Additional Interfaces:
- RGB LED: Preconfigured for colorful effects when running demo code.
- Micro SD Card Slot: Enables file storage and data logging.
- Buzzer with Switch: Easily toggled ON/OFF depending on usage.
- 4PIN 2.54mm Header: Compatible with DS18B20, DHT11, and other digital sensors.
- ESP-01 Interface (pads only): Supports I²C and UART for wireless expansion.
- 3.5mm Audio Jack: Supports dual-channel and left-channel audio output.
- Reset Button: The Raspberry Pi Pico lacks a hardware reset button. This board adds one, allowing users to reset the Pico easily without unplugging the USB cable—convenient for development and debugging.
Specifications
| Dimensions | 114mm(L) x 78.5mm(W) x 11mm(H) |
| Supply voltage | 5V(provided by PICO) |
Pico Expansion Plus S1 is easy of two sets of 2*20 pins to access to the Raspberry Pi Pico expansion board or DuPont wire to peripherals. It can be used with a number of extension modules, such as DS18B20 temperature sensor, DH11 temperatureand humidity sensor, etc. It can be used in a wider range
GPIO LED Indication
USB Type-c port for upload programs and power supply
Multiple Interfaces
On board Micro SD card slot, Full-color RGB(WS2812), Standard 3.5mm audio jack, Buzzer, Buttons, etc
Interface Definition
①&④ PICO expansion port pin header ② Raspberry Pi Pico socket ③ Type C Port (Can power the board and upload programs)
④ 4-pin HY-2.0 connector: power supply voltage selection switch ⑥ SPI interface header ⑦ DHT11/DS18B20 female header
⑧ Expansion board power indicator LED ⑨ PICO reset button ⑩ User buttons (K1: GP26, K2: GP21, K3: GP20) ⑪ 3.5 mm audio jack (L: GP18, R: GP19)
⑫ Four 4-pin HY-2.0 connectors ⑬ Micro SD card slot ⑭ ESP-01 solder pads ⑮ Full-color RGB (WS2812: GP22) ⑯ Buzzer switch ⑰ Buzzer
Dimension
WIKI
Package Contents
1. Pico Expansion Plus S1 x1
