This is how I used a Tplink MR703 running OpenWrt Backfire to forward the serial port with the Arduino Uno to a telnet port. This could be used as a cheap alternative to an ethernet shield or connecting the USB to your computer. I was able to send commands to my Arduino via telnet over wireless network with the MR703 in client mode.
Setup
Install ser2net:
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opkg update opkg install ser2net |
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Start ser2net:
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ser2net -C "8082:raw:600:/dev/ttyACM0:9600 NONE 1STOPBIT 8DATABITS -XONXOFF -LOCAL -RTSCTS" |
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Now you should be able to communicate with your Arduino on port 8082. Open up a telnet window and connect to your router.
Start on Boot
Next I will show you how to set it up so that ser2net will run on boot.
Edit the conf file:
Comment everything out and add this line at the bottom:
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8082:raw:600:/dev/ttyACM0:9600 NONE 1STOPBIT 8DATABITS -XONXOFF -LOCAL -RTSCTS |
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Edit the startup file:
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#!/bin/sh /etc/rc.common START=10 STOP=15 start(){ ser2net } stop(){ killall ser2net } |
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Enable the service:
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/etc/init.d/ser2net enable |
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