The 4IN8OUT Multi-channel DC Drive Module from M5Stack is a 4-Channel Passive Input/Switch + 8-Channel MOS Drive Output drive module. The module adopts STM32F030 as the I2C IO chip and supports 9-24V DC input, with internal DC-DC circuitry to 5V. Features * Compatible with Basic/Fire/Core2 * Adopt STM32F030 as the IO chip, I2C communication, I2C address is changeable by modifying the register * 8-channel MOS Drive circuitry shares the same VCC, channel load <1A * 4-channel Passive Input share the same GND, no active signal or >5V signal allowed * With internal MP1584, 9~24V -> 5V DC-DC converter Package Contents * 1x 4IN8OUT Multi-channel DC Drive Module * 13x 2-pin Terminals Specifications Input Voltage 9~24V Output Channel 8 Input Channel 4 Output Load <1A each Channel Communication Interface I2C I2C Address Default 0x45, change by modifying register 0xF0 Net Weight 21.9g Gross Weight 52.5g Product Size 54*54*13mm Package Size 125*68*23mm Resources * Product Documentation * Schematic Pinout M5Core GPIO22 GPIO21 5V GND 4IN8OUT MODULE 13.2 SCL SDA 5V GND Arduino Example #include #include "MODULE4IN8OUT.h" MODULE4IN8OUT module; int I2Cdevscan(); void setup() { M5.begin(1,1,1,1); // Init M5Stack. 初始化M5Stack // while (1) { // I2Cdevscan(); // delay(1000); // } while (!module.begin(&Wire, 21, 22, MODULE4IN8OUTADDR)) { Serial.println("4IN8OUT INIT ERROR"); M5.Lcd.println("4IN8OUT INIT ERROR"); I2Cdevscan(); delay(1000); }; Serial.println("4IN8OUT INIT SUCCESS"); } // void loop() { // } long interval = 0; bool level = false; void loop() { for (uint8t i = 0; i < 4; i++) { if (module.getInput(i) != 1) { // M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFTBLACK); M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFTGREEN); } else { // M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFTBLACK); // M5.Lcd.drawRect(60 + 60 * i, 0, 25, 25, TFTGREEN); M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFTRED); } M5.Lcd.drawString("IN" + String(i), 40 + 60 * i, 5); } M5.Lcd.drawString("4IN8OUT MODULE", 60, 80, 4); // M5.Lcd.drawString("FW VERSION:" + String(module.getVersion()), 70, 120, 4); if (millis() - interval > 1000) { interval = millis(); level = !level; for (uint8t i = 0; i < 8; i++) { module.setOutput(i, level); if (level) { M5.Lcd.fillRect(20 + 35 * i, 200, 25, 25, TFTBLACK); M5.Lcd.fillRect(20 + 35 * i, 200, 25, 25, TFTBLUE); } else { M5.Lcd.fillRect(20 + 35 * i, 200, 25, 25, TFTBLACK); M5.Lcd.drawRect(20 + 35 * i, 200, 25, 25, TFTBLUE); } M5.Lcd.drawString("OUT" + String(i), 18 + 35 * i, 180); // delay(50); } } // if (M5.BtnB.wasPressed()) { // if (module.setDeviceAddr(0x66)) { // Serial.println("Update Addr: 0x66"); // } // } // M5.update(); delay(500); } int I2Cdevscan() { uint8t error, address; int nDevices; Serial.println("[I2CSCAN] device scanning..."); nDevices = 0; for (address = 1; address < 127; address++ ) { // The i2cscanner uses the return value of // the Write.endTransmisstion to see if // a device did acknowledge to the address. Wire.beginTransmission(address); error = Wire.endTransmission(); if (error == 0) { Serial.print("[I2CSCAN]: device found at address 0x"); if (address < 16) Serial.print("0"); Serial.print(address, HEX); Serial.println(" !"); nDevices++; } else if (error == 4) { Serial.print("[I2CSCAN]: unknow error at address 0x"); if (address < 16) Serial.print("0"); Serial.println(address, HEX); } } Serial.print("[I2CSCAN]:"); Serial.printf(" %d devices was found\r\n", nDevices); return nDevices; } https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2023-03-07 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2023-12-27 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2024-09-18 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2024-11-29 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2024-11-30 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2025-04-29 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2025-08-06 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2025-11-28 https://elecena.pl/product/22727658/m5stack-4in8out-multi-channel-dc-drive-module-stm32f030 2025-11-29