Is it there some type of measure where measuring is not based on waiting of 1 sec and then display value from counter (timer)? Now I use two timers.
I ask becouse I have counter wich work nice from 1 HZ to 5 Mhz but I need to measure more accurate on low frequency for example now is 1,2 .. HZ, but I need 1.1Hz, 1.2Hz,...1,9Hz,2Hz.., becouse I need measure RPM (Hz*sec )and there is to big hole between two measuring of RPM 1Hz=60Hz, 2Hz=120RPM! Minimum step of 5 RPM is what will be ok on low RPM or even 10Hz.
With my system I will must wait 10 sec. for 0.1 Hz step but, 10 sec. is to long for measure RPM of el. motor becouse in 10 sec. RPM can go from 100RPM to 6000RPM!
Any ideas how to make it?
Thanks in advance,