Indebrau MQTT Controller

Introduction

The Indebrau MQTT Controller is an Arduino sketch based on the ESP8266 to enable stable wireless communication between CraftBeerPi V3 with actors and sensors, based on the MQTT protocol. It is based on the initial MQTTDevice project, started here here and continued here here. The main feature difference is the support of the more accurate (yet a little more expensive) PT100/1000 RTD sensors, using Adafruit's "Temperature Sensor Amplifier MAX31865" sensor breakout board and library. Additionally, it is possible to use a VL53L0X ToF distance sensor for managing the fill level of a kettle, which works great together with this CBPi plugin.

Features

• Sensors
  • PT100/1000
  • OneWire
  • Distance sensor
  • Offset calibration
• Actors
  • Inverted GPIO support
  • Power percentages: If a value between 0 and 100% is sent, the ESP "pulses" with a duty cycle of 1000ms
• Induction
  • Control of a GGM induction cooker via serial communication
• Display showing the readings of a sensor (optional)
• Fully configurable (sensors, induction cooker usage, actors, host ip, display usage..) via Web interface

Wiring, PCBs and Cases

(to come, check out the different controller repositories for (currently) undocumented 3d-print case- and pcb layouts)

Limitations

• Display has to be 128x32 px
• Display will always show the value of the first sensor readings.

Setup

(more to come)