Diy arduino based digital tachometer revolution counter mr innovative loading unsubscribe from mr innovative cancel unsubscribe working subscribe subscribed unsubscribe 776k. The circuit for the digital tachometer rpm counter tutorial consists of only a few devices wire them up according to the following circuit diagram the pic im using is on a demonstration board which means the clock power and ground pins are already wired up so i didnt bother to include that on the schematic. Description here is a simple circuit that can be used as a tachometer the circuit is basically a frequency to current converter which converts the incoming signal into a proportional current to drive the meter the deflection on the ammeter will be proportional to the frequency of the incoming signal for using this circuit as an automobile tachometer the input terminal a should be . This easy to use hand held digital tachometer measures up to 99999 rpm and features a large lcd display laser pointer low battery indicator and memory recall for the last displayed value minimum value and maximum value it can also be switched to measure either actual rpm or total revolutions. Rev counter for mopeds schematic circuit and wiring diagram download for automotive car motorcycle truck audio radio electronic devices home and house appliances published on 07 jul 2014
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