Crash_Override/ESP32_ChinaDieselHeater_Control
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Ray Jones 2019-05-04 05:37:59 +00:00
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# Home page for Bluetooth/WiFi Diesel Heater Controller documentation
## Version 1 PCB
<img src="uploads/e0d9b6e8d7e3278108c172c9dfea79ab/BTC2.jpg" alt="Front view" width="300"/>
<img src="uploads/a98420a503e9d88e81688f3673f40235/BTC1.jpg" alt="Rear view" width="300"/>
## Version 2 PCB, offered with case
<img src="uploads/47d051ec08ad1fcbdd05ec9a34766cf9/56161804_427457621343959_2334075276654280704_n.jpg" alt="V2 PCB inside case" width="480"/>
<br>
<img src="uploads/cd742b74b362eba817dbd72ab3129e78/BlackCase_BlueButtons.jpg" alt="Black/blue case" width="300"/>
<img src="uploads/4ca5c0cc2df9718aaf9deff05f470eef/WhiteCase_GreyButtons.jpg" alt="White/grey case" width="300"/>
## Compatibility
The design presented here will only work with heaters that use a "blue wire interface".
Of course the colour of the wire is only that of a PVC sheath.
The important aspect is what the electronics hardware exists at either end of the blue wire.
### Digital protocol controllers
If your heater uses one of the following style controllers, this design **will** be compatible:
![Rotary](uploads/24ebe408965a916fc0a0f2b5294be914/Rotary.PNG)
<img src="uploads/1e2dbba5619b43a5e477b548c1ccc9bf/LEDcontroller.jpg" alt="LED controller" width="200"/>
![LCD](uploads/4f58dde93eac36a19e8dc585b2a485ee/LCD.PNG)
<img src="uploads/af109cddb231e7df0297d692b1e3a96b/BlueLCD.jpg" alt="Blue LCD" width="300"/>
![20190111_083207](uploads/4d758c5478777c3b2077614956d23420/20190111_083207.jpg)
### Controller loom connection
The digital protocol controllers use one of 2 styles of loom connection.
A 3 pin triangular waterproof conenctor, or a smaller round 3 pin waterproof connector:
![3pinplug](uploads/7fe89a4c612ef4b517a18193cc0d4228/3pinplug.jpg)
### Heater control PCB (remains in use)
The all important part though is the control PCB within the heater.
This is the PCB within a blue wire enabled heater that will 100% work with this controller design.
The blue wire interface is circled in the following photo:
![20190111_083207](uploads/4d758c5478777c3b2077614956d23420/20190111_083207.jpg)
<img src="uploads/658fbea92b4a4f3cf0386b5512f8dcd5/HeaterPCB.jpg" alt="Heater PCB" width="600"/>
The important selection criteria is whether a dual transistor multiplexer is evident on the input path of the blue wire, this sort of topology **must** exist, if the wire runs direct to the microprocessor, it is most likely incompatible, and probably an analogue voltage from a pot: