M5Stack StamPLC
ESP32-S3 industrial PLC controller with 1.14" IPS LCD, 4 relays, 8 opto-isolated inputs, RS-485, CAN bus, INA226 power monitor, RTC, buzzer, microSD, and DIN-rail mounting in a compact enclosure.
$42.90
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Specifications
Components
Espressif ESP32-S3 with 8MB flash, dual-core Xtensa LX7 at 240MHz
135x240 IPS LCD driver
High-precision I2C current and voltage monitor
I2C temperature sensor with 0.125C resolution
RTC with built-in crystal oscillator
Bus Interfaces
GPIO Map
Overview
The M5Stack StamPLC is an IoT programmable logic controller designed for industrial automation and remote monitoring. Built around the ESP32-S3FN8 dual-core processor with WiFi and BLE connectivity, it bridges the gap between traditional PLCs and modern IoT platforms.
The StamPLC features 4 relay outputs, 8 opto-isolated digital inputs, RS-485 and CAN bus interfaces, an INA226 power monitor, LM75B temperature sensor, RX8130CE RTC, and a 1.14-inch IPS display with two Grove expansion ports. Powered by a wide-range DC 6-36V input via barrel jack, it supports DIN-rail mounting for industrial installations. The device is compatible with Arduino, ESP-IDF, ESPHome, and MicroPython.
Use Cases
5Industrial Automation
Boards designed or suitable for industrial control, automation, and embedded systems in harsh environments.
PLC Replacement
WiFi-enabled industrial controller replacing traditional PLCs for automation tasks with RS-485, CAN bus, and digital I/O interfaces.
Energy Monitoring
Monitoring energy consumption of appliances, circuits, or whole buildings using pulse counting or current sensors.
home-automation
Smart Switch
Build WiFi or BLE controlled relay boards for switching lights, appliances, and HVAC.
Resources
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