Optical Infrared Motor Speed Encoder Module (LM393)
Prices updated: 13 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 Circuits Electronics | Optical (Infrared) Motor Encoder | 50 EGP | View in store |
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Lowest price recorded: 50 EGP
About this product
An infrared slotted speed sensor module that counts pulses from a rotating slotted disc to measure motor speed in RPM. It uses an infrared photo-interrupter with an LM393 voltage comparator to produce a clean digital output. It is commonly used with Arduino for tachometer and motor speed feedback projects.
Specifications
- Sensor type
- Infrared slotted photo-interrupter
- Comparator IC
- LM393
- Output
- Digital
- Application
- Motor speed measurement (RPM)
Frequently asked questions
What is the price of Optical Infrared Motor Speed Encoder Module (LM393) in Egypt?
Optical Infrared Motor Speed Encoder Module (LM393) currently costs 50 EGP in Egypt.
Where can I buy Optical Infrared Motor Speed Encoder Module (LM393) in Egypt?
Optical Infrared Motor Speed Encoder Module (LM393) is available from Circuits Electronics. Compare the offers above to find the best price.
How do I calculate RPM with this module?
Attach a slotted disc to the motor shaft and connect DO to an interrupt-capable pin. Count pulses over a fixed time window, then compute RPM = (pulses / slots per disc) × 60 / seconds.
Which Arduino pins should I use for the output?
Use a digital pin that supports external interrupts. On Arduino Uno these are D2 and D3, which work with attachInterrupt() for accurate pulse counting.
