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Bartlett University London
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Has anyone managed to get an Arduino board talking with another serial device ie. serial LCD?

How do you use the TX and RX pins?
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Hi! sorry about my poor English.

RX at P0 , and TX at P1 , I use the "TTL" direct control a serial camera or a BT module , it work well!

RX-- device's TX
TX-- device's RX
Gnd-- Gnd

if the device is use Rs232 ,you may need a "3223" to conversion TTL to RS232

sorry about my poor English. I hope you can understand me .

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