M5Stack 4IN8OUT Multi-channel DC Drive Module (STM32F030)

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

Resources

• Product Documentation
• Schematic

Pinout

Arduino Example

#include 
#include "MODULE_4IN8OUT.h"

MODULE_4IN8OUT module;

int _I2C_dev_scan();

void setup() {
    M5.begin(1,1,1,1);  // Init M5Stack.  初始化M5Stack

    // while (1) {
    //     _I2C_dev_scan();
    //     delay(1000);
    // }


    while (!module.begin(&Wire, 21, 22, MODULE_4IN8OUT_ADDR)) {
        Serial.println("4IN8OUT INIT ERROR");
        M5.Lcd.println("4IN8OUT INIT ERROR");
        _I2C_dev_scan();
        delay(1000);
    };
    Serial.println("4IN8OUT INIT SUCCESS");
}

// void loop() {

// }

long interval = 0;
bool level    = false;

void loop() {
    for (uint8_t i = 0; i < 4; i++) {
        if (module.getInput(i) != 1) {
            // M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFT_BLACK);
            M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFT_GREEN);
        } else {
            // M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFT_BLACK);
            // M5.Lcd.drawRect(60 + 60 * i, 0, 25, 25, TFT_GREEN);
            M5.Lcd.fillRect(60 + 60 * i, 0, 25, 25, TFT_RED);
        }
        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 (uint8_t i = 0; i < 8; i++) {
            module.setOutput(i, level);
            if (level) {
                M5.Lcd.fillRect(20 + 35 * i, 200, 25, 25, TFT_BLACK);
                M5.Lcd.fillRect(20 + 35 * i, 200, 25, 25, TFT_BLUE);
            } else {
                M5.Lcd.fillRect(20 + 35 * i, 200, 25, 25, TFT_BLACK);
                M5.Lcd.drawRect(20 + 35 * i, 200, 25, 25, TFT_BLUE);
            }
            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 _I2C_dev_scan() {
    uint8_t error, address;
    int nDevices;

    Serial.println("[I2C_SCAN] device scanning...");

    nDevices = 0;
    for (address = 1; address < 127; address++ ) {
        // The i2c_scanner 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("[I2C_SCAN]: device found at address 0x");
            if (address < 16)
                Serial.print("0");
            Serial.print(address, HEX);
            Serial.println(" !");

            nDevices++;
        }
        else if (error == 4) {
            Serial.print("[I2C_SCAN]: unknow error at address 0x");
            if (address < 16)
                Serial.print("0");
            Serial.println(address, HEX);
        }
    }

    Serial.print("[I2C_SCAN]:");
    Serial.printf(" %d devices was found\r\n", nDevices);
    return nDevices;
}