CHPC: Cheap Heat Pump Controller v1.0

- 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 | +-----+-----+