# Rf communication between 3 microcontrollers using Xbee s2(XB24)

**URL:** <https://forums.digi.com/t/rf-communication-between-3-microcontrollers-using-xbee-s2-xb24/19139>\
**Category:** XCTU\
**Tags:** uart, and, config, microcontroller, xbee\
**Created:** [February 6, 2018, 1:14pm UTC](https://forums.digi.com/t/rf-communication-between-3-microcontrollers-using-xbee-s2-xb24/19139 "2018-02-06T13:14:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![xbeeuser33](https://avatars.discourse-cdn.com/v4/letter/x/8797f3/32.png) [@xbeeuser33](https://forums.digi.com/u/xbeeuser33)\
**Post date:** [February 6, 2018, 1:14pm UTC](https://forums.digi.com/t/rf-communication-between-3-microcontrollers-using-xbee-s2-xb24/19139/1 "2018-02-06T13:14:40Z")

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Hi all!

I need to know if there any special configuration i need to do exept the networking ones  
so that i could send data from one microcontroller to the other using UART.I am planning to use PIC type microcontollers and logic gates so that the 5v is converted to 3.3v.

Thanks.

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<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [February 6, 2018, 1:55pm UTC](https://forums.digi.com/t/rf-communication-between-3-microcontrollers-using-xbee-s2-xb24/19139/2 "2018-02-06T13:55:01Z")

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just make sure that one is a coordinator and that the other two have associated with that coordinator. Other than that, the default configuration of the XBee S2 Zigbee modules is Point to multi-point with the router and end devices pointing to the coordinator, and the coordinator is in Broadcast to all other nodes at 900 baud, 8 data bits, no parity and 1 stop bit using transparent mode. That means, Data in = data out.