Author Topic: Where does GENERIC SERIAL physically come out of the PI?  (Read 496 times)

Offline agm46m

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Where does GENERIC SERIAL physically come out of the PI?
« on: August 07, 2017, 04:34:11 PM »
Where does GENERIC SERIAL physically come out of the PI? I tried all four of the usb-a ports via my printer cable to Arduino Usb input. I am confused because it seems there is a difference between Usb, ttl serial, hardware serial, and software serial. I am currently using Vixen2 serial output with a header of "!", thru my printer cable to Arduino Mega. this works ok for my table top test. When I move out to the yard, my boxes will be 25 ft apart. I am planning to use RS485 bus. (hence my confusion of serial types). my FPP is Ver 1.9.

Offline agm46m

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(Solved)Re: Where does GENERIC SERIAL physically come out of the PI?
« Reply #1 on: August 09, 2017, 01:49:09 PM »
I got I going. Seems like Arduino needs to be plugged in and powered up before Raspberry Pi. Then Pi can find it.

 

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