Reddit Reddit reviews DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue

We found 1 Reddit comments about DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue. Here are the top ones, ranked by their Reddit score.

Industrial & Scientific
Test, Measure & Inspect
Motion, Speed & Force
Industrial Tachometers
DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue
Measure range: 5-9999RPM.Power requirement:DC 8-15VCome with hall sensor and magnetDisplay:BLUE 0.56" LEDMeasure varied motor RPM
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1 Reddit comment about DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue:

u/jjmy12 ยท 2 pointsr/electricians

Looks like yes: DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue https://www.amazon.com/dp/B00VKATA9G/ref=cm_sw_r_cp_api_i_pfYpDbM6836DJ

I might hook up an Arduino to manage the alarm. Run a slow-running timer. Every pulse on the Hall effect resets the timer count to zero. Use the match compare interrupt to trigger the alarm.