data connection, curious am i right?

[Dizzy]

I am wiring up my fy21AP and installing a hornet osd in the penquin.

On the data connection between the two am i right in thinking i only need 2 wires a ground and a data input to the osd from the fy21.
I am assuming no data comes back from the osd to the fy21 so its all one way!

Ground black and data RX white on hornet--------- and Ground black and data TX white on fy21AP?

dizzy

[Flyboysee]

Dizzy I just looked at the FY21AP manual and it doesn't indicate which is tx and rx pins on UART. Best thing to do is take multimeter with black probe on ground and measure pins. Tx will be +3v and rx will be -3v or thereabouts. Compare that to Hornet and you're done - tx of FY21AP to rx of Hornet.

[Dizzy]

Dizzy I just looked at the FY21AP manual and it doesn't indicate which is tx and rx pins on UART. Best thing to do is take multimeter with black probe on ground and measure pins. Tx will be +3v and rx will be -3v or thereabouts. Compare that to Hornet and you're done - tx of FY21AP to rx of Hornet.

Cheers thanks FB  :)

dizzy being dozy lol