Chain Switch

SKU:U227

Description

Chain Switch is a slide switch input node in the M5Stack Chain series, supporting both slider mode and switch mode. The device can output 12-bit slider position data and is equipped with a programmable RGB LED for intuitive status feedback. It integrates an STM32G031G8U6 core controller and adopts a UART cascading communication protocol. Through two HY2.0-4P expansion interfaces, it can connect to more Chain series devices, making it suitable for applications such as control panels, status switching, and interactive devices.

Features

M5Stack Chain series
Supports slider mode and switch mode:
- Slider mode: reads the slider position and outputs a range of 0 ~ 4095
- Switch mode: outputs the switch state based on the configured on/off thresholds
12-bit ADC slider position detection
STM32G031G8U6 core controller
1x RGB LED
Uses a UART serial cascading communication protocol
2x HY2.0-4P expansion ports, capable of expanding Chain series devices

Includes

1 x Chain Switch
1 x Chain Bridge

Applications

Control Panel Input
Smart Home Status Switching
Interactive Device Control

Specifications

Specification	Parameter
MCU	STM32G031G8U6
Input Power	DC 5V
Communication Method	UART 115200bps@8N1
Interface Specification	2x HY2.0-4P
Slider Position Detection	12-bit ADC, Output Range 0 ~ 4095
RGB LED	1x WS2812C
Operating Power Consumption	5V@10.57mA (Typical Operating State)
Product Size	24.0 x 24.0 x 18.5mm
Product Weight	5.9g
Package Size	138.0 x 93.0 x 21.0mm
Gross Weight	9.2g

Learn

Use the Chain Bridge connector to connect the main controller Chain DualKey and each Chain series device. Pay attention to the direction when connecting; the triangle arrow points from the main controller Chain DualKey to the outside, as shown in the figure:

Schematics

Chain Switch Schematics PDF

1/1

PinMap

Slider

STM32G031	PB0
Slider	ADC_IN

RGB LED

STM32G031	PA8
WS2812C	RGB

UART

STM32G031	PB6	PB7	PA2	PA3
UART1	TXD1	RXD1
UART2			TXD2	RXD2

Model Size

Chain Switch Model Size PDF