On Mon, 4 May 1998 16:59:49 +0800, you wrote: >Hi all >When using PWM to drive servos (hs-300), I know you need a pulse width >of 1mS to 2mS, but do the pulses "have" to be 20mS apart or can the be >less, >say 1mS? They need to be around 20ms, certainly 1ms is too short. I have a simple circuit to allow RC servos to be driven from the 16C74 PWM port. let me know if you're interested. ____ ____ _/ L_/ Mike Harrison / White Wing Logic / wwl@netcomuk.co.uk _/ L_/ _/ W_/ Hardware & Software design / PCB Design / Consultancy _/ W_/ /_W_/ Industrial / Computer Peripherals / Hazardous Area /_W_/