serial problem
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2 posts • Page 1 of 1
serial problem
by shanoger » Sun Jul 22, 2012 7:12 am
I have an arduino uno, i am trying to use the hardware serial port to communicate with another device which is a rdif receiver. Its out put is a RS232, at 9600baud, the problem is i cant read its data with arduino {conncted the TX of device to RX of arduino, and tried to see the result on serial monitor}. Does this mean i need a max 232 ? is arduino serial out put is 3V and there is a voltage difference?
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Re: serial problem
by adafruit_support_bill » Sun Jul 22, 2012 8:42 am
The Arduino UNO serial uses a 5v TTL signal level. If the device you are connecting to is a true RS-232 device, you will need a converter such as the Max232.
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