thanks so much, learning curve is quite steep and it was quite a silly mistake.

I need to repeat an event every second and flip-flop a GPIO pin, this does NOT work, what is wrong? on system#boot do timerset,1,1 let,1,1 enddo on rules#timer=1 do if %v1% = 1 oled,1,1,"ha" gpio,0,0 let,1,2 timerset,1,2 else oled,1,1,"hi" gpio,0,1 let,1,1 timerset,1,2 endif enddo

What is wrong with this code... All I want is to flip the status of a led regularly like every second. on system#boot do timerset,1,1 let,1,1 enddo on rules#timer=1 do if %v1% = 1 oled,1,1,"ha" gpio,0,0 let,1,2 timerset,1,1 else oled,1,1,"hi" gpio,0,1 let,1,1 timerset,1,1 endif e...