Hall effect to dc motor speedometer adapter


New Member
Sorry (in my head I had explained it but that won't help here)so a ls1 and t56 are efi v8 engine and manual gearbox the t56 has a two pulse count speedometer drive for a digital speedometer and the Holden is the recipient vehicle made in 1978 to make the old cable driven speedometer work I am going to install a small motor onto the back and need something to compute the pulses out of the gearbox and drive the motor at the require rpm to make the factory fitted 1978 speedometer and odometer function. also for error checking I will have connected to the 5v dc small motor a optical pickup like inside a ball mouse to give feed back but the maths to work it all out is my problem.