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Tinygo to elrs receiver question.

nightowl

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Hi guys, so I bought nano elrs receiver from china BAYCK RC, which seems a copy of beta fpv receiver and now I’m confused and don’t really know how to solder it in right way.

On YT there is only two videos from One man and 719. In the first case guy uses sp24s receiver which has 4 wires and solder to different pins from original on board (2), the second guy has radiomaster r81, which has 3 wire and he left the same wires and pins in the same spot how it was with fhss receiver (1).
Do I have to solder G to G, 5v to 5v, RX to R2, TX to T2?
Another question is on the other forums people soldering some resistors, do I need it with my setup or not? This is my first experience with soldering. Thanks.
 

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