On Tuesday, April 17, 2018 at 8:45:26 AM UTC-5, krasw wrote:
Original Nano has nightmarish user interface, row of leds and fiddly microscopic switch that you can also press. Better to get one with display, you at least know if it's up and running without user manual to decode led colors.

I have to disagree. I turn the Nano on, make sure it has 2 blinking green lights, and I'm done until I turn it off at the end of the flight.

It doesn't get much simpler than that.

Lou