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Four Line Sensors for $2 — Parallax Forums

Four Line Sensors for $2

ercoerco Posts: 20,256
in Robotics
Appears to be a quad comparator (339?) with four adjustment pots and four emitter/receiver pairs which can be snapped apart. I'm thinking this may be good for several applications besides line sensing, even simple proximity sensing too. Heck, that ribbon cable alone is worth $2. Will advise when mine comes in.

https://www.ebay.com/itm/4-Way-4-Channel-Infrared-Detection-Tracing-Sensor-Tracking-Module-Smart-Car-Hot/182733563479

4sensor.jpg
4sensor.jpg
1001 x 1001 - 159K

Comments

  • Martin_HMartin_H Posts: 4,051
    That has dual quadrature wheel encoder written all over it. Just purchased one.

    How on earth can they make any money at that price?
  • ercoerco Posts: 20,256
    And don't forget the four status LEDs. BLINKIES!
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