Thank You, very intriguing. I wired up a couple of colored leds and blink them at different frequencies with a couple of timers, and have another timer that's varying the frequency (by updating the interval of the led timers) every 1 second. Very straightforward with B4R, would have been a bit cumbersome in normal Arduino C.
I assume then I could use the timers say on a NodeMCU (esp8266 based) with my web server in the main thread and timers to collect or drive data on digital pins?