# No info from RP3 ExpressLRS 2.4 GHz receiver

**URL:** <https://forum.arduino.cc/t/no-info-from-rp3-expresslrs-2-4-ghz-receiver/1348632>\
**Category:** Networking, Protocols, and Devices\
**Created:** [January 30, 2025, 4:48am UTC](https://forum.arduino.cc/t/no-info-from-rp3-expresslrs-2-4-ghz-receiver/1348632 "2025-01-30T04:48:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![bekirk](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/bekirk/32/1191974_2.png) [@bekirk](https://forum.arduino.cc/u/bekirk)\
**Post date:** [January 30, 2025, 4:48am UTC](https://forum.arduino.cc/t/no-info-from-rp3-expresslrs-2-4-ghz-receiver/1348632/1 "2025-01-30T04:48:58Z")

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I am trying to use an off brand arduino nano from a hackpack to convert the ir robot into an rc robot. I haven’t got any sign of info from my RadioMaster RP3 ELRS Receiver 2.4GHz ExpressLRS Nano receiver. I found a zz-cat CRSF library on GitHub but it doesn’t like my arduino. Any thought on where to connect it and how to read the channels?

 ![IMG_7157](https://europe1.discourse-cdn.com/arduino/original/4X/f/2/c/f2cba140599228818195a3efd56bf79e9f483ddc.jpeg)

Here is the arduino I am using.

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**Author:** ![gilshultz](https://avatars.discourse-cdn.com/v4/letter/g/67e7ee/32.png) [@gilshultz](https://forum.arduino.cc/u/gilshultz)\
**Post date:** [January 30, 2025, 6:31pm UTC](https://forum.arduino.cc/t/no-info-from-rp3-expresslrs-2-4-ghz-receiver/1348632/2 "2025-01-30T18:31:49Z")

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No clue as to what you are asking. Post annotated schematic showing how you have wired this. Include all power, ground and power source connections. Include links to all of the hardware items showing technical information. Explain what is sending what and what is expected on the receive end.

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**Author:** ![xfpd](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/xfpd/32/1120236_2.png) [@xfpd](https://forum.arduino.cc/u/xfpd)\
**Post date:** [January 31, 2025, 7:38pm UTC](https://forum.arduino.cc/t/no-info-from-rp3-expresslrs-2-4-ghz-receiver/1348632/3 "2025-01-31T19:38:37Z")

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> [@bekirk](#):
>
> Any thought on where to connect it

USB-C.

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**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\
**Post date:** [July 30, 2025, 7:39pm UTC](https://forum.arduino.cc/t/no-info-from-rp3-expresslrs-2-4-ghz-receiver/1348632/4 "2025-07-30T19:39:05Z")

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