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:

Abbr.	Full name
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