How to connect to NASA protocol with wire F3 F4 #56
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@ngtrangtrung I am not sure what we see on your picture. This project is designed to be used for the connection between the outdoor unit and the indoor unit. Not for the connection between remote controller and indoor unit. |
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So I've gotten a hold of MIM-A00N sub-pcb to provide F3/F4 connection and a MWR-WG00JN wired controller for one of the indoor units. Quick test shows that F1/F2 only supplies minimal signal voltage, but F3/F4 is actually used to power the wired remote along with passing data around and there's around 10-12V. |
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You can decouple the atom form DC on the F3/F4 bus by connecting the A and B lines to F3 and F4 with 10uF/25V ceramic capacitors. |
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Hello
Wire Remote Controller, With Nasa there are only 2 lines F3 F4, how will the connection line be connected?
Can I use M5STACK ATOM to connect like non-nasa?
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