This conclusion is where i came to. I'll put that serial cable to my long term "shopping list"racingmini_mtl wrote: So while this could probably be dealt with in software, I don't think it is a real issue for most people. And the JimStim is not intended as a lab spec equipment either and the CPU resources are scarce. It is possible that you have pots that are not perfect and are more susceptible to a bit of variation at just the wrong place and this is why you have been more affected. Another solution is to use the V2.0.3 firmware and the serial cable and control the RPM from the PC. This will guarantee a perfect RPM value without any unwanted variation.
Jean
Thanks.