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### CHPC: Cheap Heat Pump Controller v1.0
<b>The CHPC a minimal cost Heat Pump (HP) controller, which can be used as provided, or can be adopted to nearly all use cases due to open source nature.</b>
<br><br>
## Development
State: active
<br><br>
## Applications:
| Usage. | Brief description. | Application examples | Available protections |
| ---------- | ------------------ | ------------------ | -------------------- |
@ -23,7 +22,7 @@ For more information about Heap Pumps look at [Wikipedia about HP](https://en.wi
<b>Remote computer terminal over RS-485 line. </b> Target temperature and running conditions under remote control. User can get stats from all T sensors. Up to 1.2 kilometer line.\*<br>
<b> Remote automated control/stats via RS-485.</b> Firmware was written with python scripting in mind (and real scripts at prototype 485 network).<br>
\* RS-485 specification. Hardware test succeeded on 400 meters line.
<br>
<br><br>
### <b>Relays:</b>
## <b>"Thermostat"</b>:
Only 1 Relay: drives electric heater (any)
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* Up to 13 temperature sensors can be connected to CHPC to control all processes that you want.
* Only 1 sensor needed for "Thermostat" or "Heat Pump capillary/TXV"
* 3 sensors needed for "HP with EEV" (absolute minimum scheme)
<br>
<br><br>
## PCB Design
There are 2 PCB designs: type "F" and type "G".