BluetoothHeater

Bluetooth & WiFi interface for Chinese Diesel Heaters

Requirements

Requires "blue wire" compatible heater unit
Blue wire interface circuitry
ESP32 dev module
HC-05 Bluetooth module - preferably exposing the key pin, not power control)
DS18B20 one wire temperature sensor
1.3" I2C OLED using SH1106 controller
DS3231 Real Time Clock
Technical ability to solder SMD components
Technical ability to program/flash in the Arduino environement

Working so far:

Power On/Off
Temperature + & -
Fuel mixture tuning
One wire remote temperature sensing (DS18B20)
Heat exchanger body temperature, as reported by heater unit
I2C Interface to 1.3" SH1106 based OLED for a full featured controller
5 button keypad interface
Smart error detection, observes unusual heater state progression (ignition fail)
ESP32 with HC-05 Bluetooth
JSON based communications between Bluetooth and Wifi apps
Bluetooth Connectivity
Bluetooth Control App for Android (App Inventor based)
WiFi Connection to existing network or Standalone Access Point Mode (Passwd: thereisnospoon)
Wifi control
DebugPort data sent via Telnet if/when available on the network.
Two 7 day timers - including repeat every day functionality
Battery backed Real Time Clock - DS3231
Prototype "Green PCB" in production, using naked ESP32 and HC-05 modules

To be implemented

MQTT pub/sub
"fuel gauge" - Integrate pump frequency, assuming a repeatable dose of fuel per pump cycle...
Expand hardware compatability with different MCU setups. IE Arduino Due/Mega/Pro ESP8266 & ESP32
Documentation
Regular Hot Burn cycle (DPF mode!)
list under construction.....

Suggestions

If you have a buring desire for a feature that you think will useful, please feel free to drop me a line at gitlab@mrjones.id.au. Your request will be thoughtfully considered. If deemed viable and worthwhile to the greater good it will be added to the "To be implemented list" above and worked on in good time. Please be aware that this is not my day job, so "good things take time".

Case for Green PCB

https://www.thingiverse.com/thing:3398068

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