### CHPC: Cheap Heat Pump Controller v1.0 ```diff - NOW: purchasing components and PCBs, development will be resumed after arrival at ~April-May 2019 ! ``` ## Development State: active Discussion: https://www.forumhouse.ru/threads/469103/ ## 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: +-----+-----------+ | Tae | after evaporator | | Tbe | before evaporator | | Tsump | sump | | Tci |cold in | | Tco |cold out | | Thi |hot in | | Tho |hot out | | Tbc |before condenser | | Tac |after condenser | | Touter |outer | | Ttarget |target | | Ts1 |sens_1 | | Ts2 |sens | +-----+-----+