Hi, I'm new here, and also new to all things electronic.
I want to build an rpm activated switch for my motorcycle and I've looked through the various threads here, but I'm still a little lost.
I bought a frequency activated switch that uses an LM2917N IC and it works like a dream, but when I look at the "speed switch" schematic on the data sheet it makes the switch I bought look like overkill!
Basically what I'll be looking for is to be able to switch an LED on at let's say 10,000rpm (166.66Hz), but I'd like it adjustable so that I can pick the point that it's activated to an accuracy of approx. 100rpm (1.66Hz).
I suspect that to achieve this accuracy will mean that the range of operation is limited. If this is the case, how can I then adjust the range of operation?
Any help that you can offer will be much appreciated.
I want to build an rpm activated switch for my motorcycle and I've looked through the various threads here, but I'm still a little lost.
I bought a frequency activated switch that uses an LM2917N IC and it works like a dream, but when I look at the "speed switch" schematic on the data sheet it makes the switch I bought look like overkill!
Basically what I'll be looking for is to be able to switch an LED on at let's say 10,000rpm (166.66Hz), but I'd like it adjustable so that I can pick the point that it's activated to an accuracy of approx. 100rpm (1.66Hz).
I suspect that to achieve this accuracy will mean that the range of operation is limited. If this is the case, how can I then adjust the range of operation?
Any help that you can offer will be much appreciated.