chpc/README.md

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### CHPC: Cheap Heat Pump Controller v1.0
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## Development
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State: active
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Discussion: https://www.forumhouse.ru/threads/469103/
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## PCB Design
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There are 2 PCB designs: type "F" and type "G".
Both untested.
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# Type "F" features:
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- **only SMD** componens,
- **internal power** source,
- **10** output channels,
- 5 output channels,
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- 4 input channels,
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- 5 relays: 1 * 16A + 4 * 7A,
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- buzzer,
- EEV support,
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- 16 bit **i2c ADC: on board**,
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- i2c devices: allowed,
- ds18b20 on one lane.
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# Type "G" features:
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- **no SMD** components,
- **external, board-placed** power source,
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- 5 output channels,
- 4 input channels,
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- 5 relays: 2 * 16A + 3 * 7A,
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- buzzer,
- EEV support,
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- 16 bit **i2c ADC: off board**,
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- i2c devices: allowed,
- ds18b20 on one lane.
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# Type "F" PCB
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![Type F PCB](./PCB_Type_F.png)
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# Type "G" PCB
![Type G PCB](./PCB_Type_G.png)