# Using XBEE as serial UART wire replacement

**URL:** <https://forums.digi.com/t/using-xbee-as-serial-uart-wire-replacement/1667>\
**Category:** XBee - 802.15.4\
**Created:** [April 2, 2011, 6:18pm UTC](https://forums.digi.com/t/using-xbee-as-serial-uart-wire-replacement/1667 "2011-04-02T18:18:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![wads](https://avatars.discourse-cdn.com/v4/letter/w/71c47a/32.png) [@wads](https://forums.digi.com/u/wads)\
**Post date:** [April 2, 2011, 6:18pm UTC](https://forums.digi.com/t/using-xbee-as-serial-uart-wire-replacement/1667/1 "2011-04-02T18:18:32Z")

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I have circuit that interfaces with the ATMega 168 via UART over a a single wire connection. I’m trying to replace the wire with the XBEE. I have an XBEE explorer that I used to configure my XBEE; setup the channel, PAN ID, destination and source addresses and baud. The TX XBEE has 3 connections, DIN, VCC (3 volts), and GRND. The RX XBEE has 3 connections; DOUT, VCC, and GRND. Can’t seem to get communications to work.

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**Author:** ![wads](https://avatars.discourse-cdn.com/v4/letter/w/71c47a/32.png) [@wads](https://forums.digi.com/u/wads)\
**Post date:** [April 2, 2011, 8:48pm UTC](https://forums.digi.com/t/using-xbee-as-serial-uart-wire-replacement/1667/2 "2011-04-02T20:48:53Z")

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It was VCC. Datasheet says 2.8-3.4V. I had 3.0V for supply. Would not work. Modified cicuit for 3.3V, working as advertised.