PLC Communication Central

The PLC Communication Central offers GSM, GPS, Ethernet, Wifi, Bluetooth with a powerfully STM32F405 as core. Full annotaded schematics can be found here.


  • 4 pin HMI header allowing a display to be connected.
  • Super capacitor for RTC.
  • BasicPI Standard SWD for programming/debugging.
  • W5500 for Ethernet.
  • Raspberry PI Zero W mounting holes.
  • Ethernet RJ45 connector.
  • GPS Antenna
  • GSM/GPRS Antenna
  • Nano SIM Card holder.
  • Standard mounting holes. M2.5 in each corner.
  • SIM808 module for GPS/GSM,3G etc.
  • Analogue Audio/USB connector.
  • 4V PSU (MIC29302BU)
  • 2 x MAX3485 for RS485.
  • STM32F405RG 32 bit ARM M4 MCU.
  • 3.3V PSU (LM1113)
  • 40 pin PLC backbone connector
  • 40 pin Raspberry PI 2/3/Zero W connector
  • Audio/USB available on back side. 5V + VBUS available here.
  • Test holes for PCM
  • Extra wiring to enable swapping of PCM In/Out