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No hay artículos en el carro Description:
Features:
1, the use of imported groove coupler sensor, slot width 5mm.
2, output status indicator lamp output high, output low lights.
3, block, output high; no shelter, output low.
4, the comparator output signal clean, good waveform, driving ability, than 15mA.
5, the working voltage of 3.3V-5V
6, the output format: digital switching output (0 and 1)
7, a fixed bolt holes for easy installation
8, small PCB board size: 3.2cm x 1.4cm/1.3 x 0.6inch
9, using a wide voltage comparator LM393
Wiring instructions:
1, VCC positive power supply 3.3-5V
2, GND power supply is negative
3, DO TTL switching signal output
4, AO this module does not work
Package includes:
5 x Speed Measuring Sensor LM393
5 x Encoders
2 x 10Pin Dupont Cable Female to Male
2 x 10Pin Dupont Cable Female to Female
Vini
Reseñado en Suecia el 23 de febrero de 2025
Easy to use and works as expected. Maybe it’s not the most precise and accurate one but it works fine for most basic applications
Alexander S.
Reseñado en Alemania el 3 de febrero de 2022
Habe eine Schaltung die mir durchschnittlich 500 Umdrehungen pro Sekunde misst. Funktionieren sehr gut, würde sie sofort wieder kaufen.
Ian D
Reseñado en el Reino Unido el 5 de enero de 2021
Good value and performed as expected. The only issues that I had were more to do with how I was using them, rather than any special device defect. However, I will explain here in case it helps others.1. I needed to fit these face down on the chassis of a cheap robot car kit. Unfortunately the connector pins, though angled outward, still protruded to much from the top of the board. Simple fix, I removed the connector and soldered wires directly to the board. I chose not to refit the connector on the other side of the board to improve robustness against vibration.2. I found that the sensors were occasionally seeing more slots than had actually passed by. Close examination with an oscilloscope revealed that, although at first glance the output pulses were nice and square, as I zoomed in I saw a small amount of noise on the leading edge of the output pulse. My work-around was to fit a 100nF disc ceramic capacitor between the output pin and ground (which although it reduced the sharpness of the square wave, also integrated the noise and leading edge in to a smooth(ish) slope).
David Cotterill-Drew
Reseñado en el Reino Unido el 22 de enero de 2021
All tested ok, quite a bonus to have the dupont wires as well, especially for this price.
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