The first successful test of the bluetooth remote controller for N7DDC ATU-100. The first test shows just only the test of turning ON/OFF the N7DDC automatic antenna tuner via bluetooth HC-05 modules and using an Arduino UNO as the master controller with POWER, TUNE/RESET, AUTO and BYPASS buttons and an Arduino NANO as the slave controller with a green control (ON/OFF) LED and a bistable relay to switch ON/OFF the +12V ATU-100 power supply.
OK1TK HAM Radio 