Thanks for the reply, i want to run at 10ms on time, and I tried tweaking time.sleep by order of magnitude and still could not hit the on time. I guess there are limitation for the phidget hardware

Setfreq u cannot do 50hz, the data sheet says phidget can be operated with a min freq of 100 hz

I am trying to run a solenoid pump using VINT Hub and Rel1100 Isolated relay. The pump needs operating voltage of 24 volts, and i am controlling that using the relay. The key is the pump max freq is 50hz, and on time is just 10ms. Because the phidget min freq is 100 hz, i am directly controlling on ...