The HomeMaster MiniPLC is an ESP32 PLC controller in a compact DIN-rail form factor with ESPHome pre-installed for Home Assistant integration, and designed for residential and light industrial automation.The device features relay outputs, four isolated 24V digital inputs, 0–10V analog inputs, one 0–10V analog output, PT100/PT1000 RTD channels, 1-Wire buses, and an RS-485 Modbus RTU interface. It also includes a 128 × 64 OLED display, four buttons, 12 LEDs, a buzzer, RTC, microSD slot, and optional 10/100Mbps Ethernet, with support for 24 V DC or 85–265 V AC power.HomeMaster MiniPLC specifications:
Wireless Module – ESP32-WROOM-32D-N16 (soldered on the backside of the PCB)
SoC – ESP32 dual-core wireless microcontroller
CPU – Dual-core Xtensa 32-bit microprocessor @ 240MHz
Memory – 520KB internal SRAM
