11-27-2024, 01:05 PM
Hello there,
I am looking for confirmation before purchase that I can use this board as I plannig to.
So my plan is to use this board for central heating management. I attached a picture how does the setup looks so far.
I will use Home assistant and esphome.
As you can see I have
- 4 24V AC valve.
- 5 temperature sensor (ds18B20)
- analog pressure sensor (SEN0257)
- leak sensor (just a basic contact sensor)
- opentherm adapter (this one)
- for network connection I will use ethernet
Do I need an additonal power supply (9-24V DC) to power my board? Or it can be power from 5V?
4x 24V AC valve: This is easy, They can go to the 4 relay. I think I will use the normaly closed terminals, in case of a board issue, the heating should not be affected. There is a separate 24V AC power supply, which only responsible for powering these valves.
5 temperature sensor (ds18B20): As far as I know these sensors has uniq id and can use the same pin, with one wire protocol. I can use the 3.3V output and ground from the board, and GPIO01 for the onewire.
analog pressure sensor (SEN0257): This sensor needs 5V can I get 5V out of this board? The output of this sensor is analog, so I can use AI1 for that.
leak sensor: This is just a digital sensor this is trivial too, it can go DI1 and ground.
opentherm adapter: This board need 3.3V, this I can get from the board. But also needs 2 free IO. Is there an IO I can repurpose in this case? There is only one free "bare" gpio left which is this case GPIO2. All other looks like has a special purpose.
I am really excited for this project and looking forward for responses. Thanks in advance.
I am looking for confirmation before purchase that I can use this board as I plannig to.
So my plan is to use this board for central heating management. I attached a picture how does the setup looks so far.
I will use Home assistant and esphome.
As you can see I have
- 4 24V AC valve.
- 5 temperature sensor (ds18B20)
- analog pressure sensor (SEN0257)
- leak sensor (just a basic contact sensor)
- opentherm adapter (this one)
- for network connection I will use ethernet
Do I need an additonal power supply (9-24V DC) to power my board? Or it can be power from 5V?
4x 24V AC valve: This is easy, They can go to the 4 relay. I think I will use the normaly closed terminals, in case of a board issue, the heating should not be affected. There is a separate 24V AC power supply, which only responsible for powering these valves.
5 temperature sensor (ds18B20): As far as I know these sensors has uniq id and can use the same pin, with one wire protocol. I can use the 3.3V output and ground from the board, and GPIO01 for the onewire.
analog pressure sensor (SEN0257): This sensor needs 5V can I get 5V out of this board? The output of this sensor is analog, so I can use AI1 for that.
leak sensor: This is just a digital sensor this is trivial too, it can go DI1 and ground.
opentherm adapter: This board need 3.3V, this I can get from the board. But also needs 2 free IO. Is there an IO I can repurpose in this case? There is only one free "bare" gpio left which is this case GPIO2. All other looks like has a special purpose.
I am really excited for this project and looking forward for responses. Thanks in advance.