M2 s1 serial port VS RS2/RS+ serial port

Hi emlid what is the difference between M2 s1 serial port VS RS2/RS+ serial port aside of its interface. Does it work thesame?

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Hi Joseph,

Reach M2 uses UART and Reach RS2/RS+ uses RS-232. They have different voltage levels for logical 0 and 1, and you’ll need the adapter to make them work with each other.

As for the logic of operation, it’s similar: you’ll need RX, TX and GND wires to make it work.

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I have an rs232 radio, how am i goin to make it work with reach m2?

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Hi Joseph,

You can use any UART to RS-232 converter, it should be possible to purchase it from a local electronics store or online.

Then you need to connect both radio and M2 to it. Most likely, the connection would be the following:

  • RX → TX
  • TX → RX
  • GND → GND

But if you feel like you’re stuck with it, post the photos of the converter here and we’ll help you to figure it out :slightly_smiling_face:

There is the pinout for M2.

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