Hello, Do you guys think I can use BK7231 (I have wb8p and wb2s) module or NiceMCU-WB3S, maybe even LN882 in combination with OpenBeken to control my Carrier and Midea AC units /they use same control dongles/? I can deal with making the hardware to get power and connect to the AC UART, but I...

So your AC has basically an UART port and you want to send UART commands to it via OBK? Sure, no problem, even UARTSendHex could do it. What is the specs of the commands you want to send? Do you have a datasheet or a specific code sample that you'd like to run? We've already done something similar for Roomba:

Now that I think bout it I am currently wasting your time,Let me get some digging first so I can get to actual testing - then I might open this again.I am too tight on free time, so could be months.

[Solved] Using BK7231, NiceMCU-WB3S, LN882 with OpenBeken for Carrier/Midea AC Control

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#1 21510267 07 Apr 2025 11:38

apsis apsis

Level 6

Post #1
21510267 07 Apr 2025 11:38

Hello,

Do you guys think I can use BK7231 (I have wb8p and wb2s) module or NiceMCU-WB3S, maybe even LN882 in combination with OpenBeken to control my Carrier and Midea AC units /they use same control dongles/?

I can deal with making the hardware to get power and connect to the AC UART, but I have zero programming skills.
So do you think it is possible with OpenBeken as done here with ESP: https://github.com/dudanov/iot-uni-dongle ?
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#2 21510319 07 Apr 2025 12:18

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #2
21510319 07 Apr 2025 12:18

So your AC has basically an UART port and you want to send UART commands to it via OBK?
Sure, no problem, even UARTSendHex could do it. What is the specs of the commands you want to send? Do you have a datasheet or a specific code sample that you'd like to run?
We've already done something similar for Roomba: https://www.elektroda.com/rtvforum/topic4056887.html

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

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#3 21510330 07 Apr 2025 12:31

apsis apsis

Level 6

Topic author Helpful post? (0)

Post #3
21510330 07 Apr 2025 12:31

Now that I think bout it I am currently wasting your time,
Let me get some digging first so I can get to actual testing - then I might open this again.

I am too tight on free time, so could be months.
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[Solved] Using BK7231, NiceMCU-WB3S, LN882 with OpenBeken for Carrier/Midea AC Control

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