No screen for autopilot. It's nice to have a second hand to hold a weal :P It' really nice if all is ok. But in Caribbean not so many options to start your autopilot in this case x501 without a remote screen, mdf, ..... Remote control unit is not working. Rest is fina. It would be nice to have on/off button. Yes

TODO -- add link to photo of hardware

• arduino nano,
• usb phone charger
• 3 x resistor (100 kohm or less then 1mohm)
• 1 x npn transistor ( I used recycled :)
• 2 x resistor ~6 ohm
• button
• led (small red)

• This is a seatalk to ttl
• from TTL converter on arduino pins: SEATALK_RX: 8, SEATALK_TX: 9, BUTTON0: 2, LED0: 3

After start making hand shake, If button press, it send auto command to seatalk If button press and pilot was engaged it sands stand by command Led on arduino indicate button status to debug, led on pin 3 is showing pilon assunt status.

On usb terminal help available: hit ? to get it :)

There is some to play with. Heats down for brilliant work of Thomas_Knauf in publishing pdf about seatalk communication and some information about signal processing. 2st: command is a treat :)

https://github.com/yOyOeK1/ykpilot/blob/ToqttUpdate/arduino/arduinoNanoStGateRaw1/arduinoNanoStGateRaw1.ino ver1: f6b6812887d6e2ff9259d958deb579d63ee5fdd3

good luck Monti !