HELP using Adafruit Feather nRF52 Bluefruit LE to send signal to Bluart friend a

Hello,

Im trying to a build a remote control actuator for my hidden door.

I have a arduinio uno hooked up to a BLE Uart friend breakout that controls relays to actuator I have a Adafruit Feather nRF52 Bluefruit LE that I want to have a input from a push button that send HIGH/LO to the pins on the UNO (the way you can so easily through the iOS app)

Even looking through the code on the BLE client and central examples--I cant figure the correct sample code to use for either the tx device (feather) or rx (connected to relays for actuator) (Uno).

Could someone please provide some guidance?

I have usccessful makde the UNO control relays with the iOS app; and I have now seen a connection between feather and uno with BLEClient , Central, and Scanner.

Help is much appreciated.

Best