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geoffdavis / esphome-mitsubishiheatpump

ESPHome Climate Component for Mitsubishi Heatpumps using direct serial connection
BSD 2-Clause "Simplified" License
585 stars 157 forks source link

RFE: Passthrough support to enable MHK1/MHK2 usage simultaneously #85

Open kpfleming opened 1 year ago

kpfleming commented 1 year ago

(Note: I'm not actually asking anyone to implement this... I plan to do it myself, but opened this issue to be transparent about it and see if others are interested!)

I'll be using this component on an M5Stick-C (ESP32-PICO-D4 based) connected to a PVA-series air handler. In order to ensure that the existing MHK2 wireless thermostat continues operating, this component will need to implement passthrough of serial data packets between two UARTs. There's an example of doing this (for MHK1, but similar things should work for MHK2) here: https://github.com/akamali/mhk1_mqtt

Unfortunately that method uses a heavily modified version of the SwiCago library, so I don't know how practical it will be to complete this project, but I will be giving it a go :)

If this fails, I'll end up using the HeatPumpEmulator from the same author to implement a 'fake' HeatPump for the MHK2 to talk to, and Home Assistant will handle taking data from it and supplying it to the ESPHome-based interface. Should be fun either way!

2xaronl commented 1 year ago

@kpfleming Were you able to make progress on this? I've got a PVA being installed with a MHK2 as I type this and I'd love to have the MHK2 operate simultaneously.

kpfleming commented 1 year ago

I have not yet, sadly, other projects have gotten in the way. It's getting close to the top of the stack though!

thomashillyer commented 1 year ago

I just set up this project last night and have this exact same setup and question. I am very interested to see your work in this.

hgabignon commented 1 year ago

Marking myself as interested to participate in this effort. I have a couple of FS units and a PVA at my home with a MHK2/MIFH2, so once I'm operational, I'd love to help / start this branch.

cfamfl2019 commented 1 year ago

Also interested and happy to help test.