Contribution: Samsung ASHP NASA link <-> MQTT bridge (Home Assistant)

[glyn.hudson]

Nice project! This looks very impressive

@Topaz

It’s a python tool, meant to run on raspberry (or other SBC), which connects the NASA link on F3/F4 connector, the link normally used to wire remote controllers.
I was not satisfied with the remote controller unability to go wireless. And therefore replaced them

Is it possible to use this with the wired controller still connected? Or does it require permanently disconnecting the wired controller?

I’ve been communicating with my Samsung ASHP via the Samsung Modbus module (MIM-B19N), but this is quite limited compared to what you can get from F3/F4/:

EmonHub support for Samsung Heatpump Monitoring via Modbus

I’ve recently installed a Samsung ASHP (AE050RXYDEG-EU) at my house. Even though I’ve installed full Level 3 heat pump monitoring with a heat meter I’ve also been experimenting with communicating directly with the unit itself. Using the Samsung Modbus Module MIM-B19N and a Modbus to USB adaptor I’ve been able to extract the following data: [Screenshot 2022-12-18 00.16.35] I started with a simple python script to read the modbus registers which are documented in the modbus module documentatio…