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  • 08/10/2017

    The Product works as it is said in the description: It does not give you speed (speed calculations have to be done by the micro-controller) so the name "Speed Measuring Sensor" is a bit off. these modules could also be used as optical endstops for 3D printers

  • zafrane

    produit confor

  • 24/07/2017

    ok. lev og pris fin.

  • 22/09/2020

    S&H OK. Item as described. Visual inspection shows no obvious damage. Product quality unknown at this point.

  • 30/03/2021

    fast shipping!

  • 28/02/2021


  • 10/01/2021


  • 12/11/2015

    The output of this board can oscillate when the slot in the wheel is half open - half closed. The designer added a 100nF capacitor across the photo transistor but that makes the situation worse. To fix this problem, the capacitor closest to the edge of the board should be removed and a 33k resistor must be added between output (pin7) and the non-inverting input (pin5). I will post the schematic in a second. Note: if you poll the output in your software, you can omit the modification. But if you use an interrupt or clock-input, this mod is necessary.

    Comments (2)
  • 04/05/2016

    Justamente andaba buscando este montaje para hacerme un encoder óptico. Ya lo he montado y va fenomenal. Las señales en el osciloscopio perfectas y utilizando 2 módulos sobre el mismo disco perforado permite saber el sentido de giro y contar ó descontar pulsos acoplado a un Arduino por ejemplo.

  • 08/03/2016

    Todo esta perfectamente como se indica y ademas tiene buena cálida, muy contento con este producto. Real mente merece la pena la relación precio calidad lo recomiendo. Ok


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