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.

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.

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.

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

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

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

produit confor

produit confor

produit confor

ok. lev og pris fin.

ok. lev og pris fin.

ok. lev og pris fin.

excellent to be used for modell train turntable detetction

excellent to be used for modell train turntable detetction

excellent to be used for modell train turntable detetction

Very small and looks very good. The placing of the sensing unit on the reversed side is maybe better.

Very small and looks very good. The placing of the sensing unit on the reversed side is maybe better.

Very small and looks very good. The placing of the sensing unit on the reversed side is maybe better.

Very good

Very good

Very good

Fast delivery, every thing is ok. I Test it and report my experiences. Thanks

Fast delivery, every thing is ok. I Test it and report my experiences. Thanks

Fast delivery, every thing is ok. I Test it and report my experiences. Thanks

fast shipping!

fast shipping!

fast shipping!

Rendben

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