- Joined
- Aug 21, 2013
- Messages
- 27
After seeing the cheap tachometer mrpete222 demonstrated on his youtube channel I want to add it to my mill and lathe but I've got a question about the hall sensors. The tachometer readout he used measures based on one pulse (one magnet) per revolution. There is another readout available in the same price range that is adjustable/scalable so you could have say 4 magnets (4 pulses) and the readout would measure one rotation only after it received all 4 pulses.
I'm mildly competent with electrical systems but no expert by any means so my question I hope someone can answer is; I thought that the more pulses you had for a single revolution, the more accurate a tachometer is at lower speeds. Am I correct or am I mistaken?
BTW, I don't have a direct link to readouts on ebay, but all I did was paste the search parameters mrpete gave in his videso "Hall Proximity Switch Sensor NPN+ 4 Digital Red LED Tachometer RPM Speed Meter"
I'm mildly competent with electrical systems but no expert by any means so my question I hope someone can answer is; I thought that the more pulses you had for a single revolution, the more accurate a tachometer is at lower speeds. Am I correct or am I mistaken?
BTW, I don't have a direct link to readouts on ebay, but all I did was paste the search parameters mrpete gave in his videso "Hall Proximity Switch Sensor NPN+ 4 Digital Red LED Tachometer RPM Speed Meter"