Description Demo Board is a learning and development board . It uses M5Core as the control core and is fully compatible with the module stacking and hardware expansion system. It is equipped with multiple sets of environment detection sensors and provides various input methods such as joystick , rotary encoder , matrix buttons , and RFID (radio frequency identification) . It includes three motor driving methods (DC motor, stepper motor, servo motor), RGB LED light board , integrated multiple sets of relay control and ADC/DAC conversion circuits, supports RS485, RS232 bus communication , and provides an independent power switch for each module. Combined with the IoT-enabled M5Core , the onboard modules cover multiple aspects of sound, light, electricity, and force. The Demo Board is an excellent tool for learning hardware programming and IoT education . Features Compatible with Module stacking and Unit expansion system Proto board, M5-BUS bus expansion Independent power switch for each module Environmental sensor series (temperature , humidity , pressure , light , microphone ) Joystick input 8-channel relay output 4-channel DAC, 4-channel ADC 4x4 button matrix 8x8 matrix RGB LED Rotary encoder Single-channel servo DC motor (with feedback) Four-phase five-wire stepper motor RFID card reader RS-485, RS232 communication Package Includes 1 x Demo Board-SHT30 1 x DC 12V power adapter (5.5 x 2.1mm) 1 x RS232 cable 1 x RFID Card 1 x ID Card 16 x Breadboard wires Applications IoT Educational Experiment Board Multi-Functional Test Board Specifications Specification Parameter Product Size 270.0 x 61.0 x 30.0mm Product Weight 661.3g Package Size 328.0 x 256.0 x 95.0mm Gross Weight 1098.2g Learn Module Layout Module Parameters Schematics Demo Board-SHT30 Schematics PDF Datasheets ADS1115 DAC6574 LV8548MC TPS54360 MRC522 MAX232ESE MAX4466 SP485EEN BMP280 SHT30 Quick Start Demo Board-SHT30 Quick Start Guide PDF Arduino Demo Board-SHT30 Test Example Note DAC and ADC functions cannot be used simultaneously because both use address 0x48. Easyloader Easyloader Download Link Remarks Demo Board-SHT30 Test Easyloader download / Version Change Release Date Product Changes Remarks 2019.5 Initial release / 2021.4 DHT12 → SHT30, BMP280 → QMP6988 /