<p>You can use the Bluetooth mailbox feature to pass messages back and forth between 2 NXTs.</p>

<p>If you want to use sensors, you could use the HiTechnic <a href="http://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&amp;key=NIL1046" rel="nofollow">NXT IRLink Sensor</a> (NIL1046) and <a href="http://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&amp;key=NIR1032" rel="nofollow">NXT IRReceiver Sensor</a> (NIR1032).</p>

CC BY-SA 3.0
2014-08-26T21:03:04.293Z
2014-08-26T21:03:04.293Z
David Lechner
<p>Is it possible to connect, in some way, two NXT bricks that has program functions running on both. For example, Brick one would tell brick two that it is okay to start a program. Are there any sensors that could facilitate this type of communication?</p>

<nxt><programming>
How to make NXT bricks communicate information?
Stefanos Koutsoukos
# How to make NXT bricks communicate information?

(Asked by: username_0 on 2014-08-26)

Is it possible to connect, in some way, two NXT bricks that has program functions running on both. For example, Brick one would tell brick two that it is okay to start a program. Are there any sensors that could facilitate this type of communication?

**Tags:** nxt, programming


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## 1 answers

### Answer by username_1 on 2014-08-26. Score: 3 | Accepted answer

You can use the Bluetooth mailbox feature to pass messages back and forth between 2 NXTs.

If you want to use sensors, you could use the HiTechnic [NXT IRLink Sensor](http://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&key=NIL1046) (NIL1046) and [NXT IRReceiver Sensor](http://www.hitechnic.com/cgi-bin/commerce.cgi?preadd=action&key=NIR1032) (NIR1032).


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