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1.3 KiB
1.3 KiB
CHPC: Cheap Heat Pump Controller v1.0
- NOW: purchasing components and PCBs, development will be resumed after arrival at ~April 2019 !
Development
State: active
PCB Design
There are 2 PCB designs: type "F" and type "G".
Both designs state: beta, untested.
Type "F" features:
- mostly SMD componens,
- internal power source,
- 10 output channels,
- 4 input channels,
- 5 relays: 1 * 16A + 4 * 7A,
- buzzer,
- EEV support,
- 16 bit i2c ADC: on board,
- i2c devices: allowed,
- T sensors: ds18b20 on one lane.
Type "G" features:
- no SMD components,
- external or board-placed power source,
- 5 output channels,
- 4 input channels,
- 5 relays: 2 * 16A + 3 * 7A,
- buzzer,
- EEV support,
- 16 bit i2c ADC: off board,
- i2c devices: allowed,
- T sensors: ds18b20 on one lane.
Type "F" PCB
Type "G" PCB
....
.... Drafts below.
Sensors abbreviations:
| Abbr. | Full name |
|---|---|
| Tae | after evaporator |
| Tbe | before evaporator |
| Ttarget | target |
| Tsump | sump |
| Tci | cold in |
| Tco | cold out |
| Thi | hot in |
| Tho | hot out |
| Tbc | before condenser |
| Tac | after condenser |
| Touter | outer (outdoor) |
| Ts1 | additional sensor1 |
| Ts2 | additional sensor2 |