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5Pcs Speed Measuring Sensor Switch Counter Motor Test Groove Coupler Module Geekcreit for Arduino - products that work with official Arduino boards

5Pcs Speed Measuring Sensor Switch Counter Motor Test Groove Coupler Module Geekcreit for Arduino - products that work with official Arduino boards

Roymall C.o.

$1.45 /$3.65

4.92300

Shipping to: United States

Express: 7-12 business days

Standard: 15-25 business days

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Wedzera pangoro Tenga izvozvi

$2.99 /$3.65

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5Pcs Speed Measuring Sensor Counter Motor Test Groove Coupler Module For

Application:

Widely used in motor speed detection, pulse count, the position limit, etc.

Feature:

Using imported groove optical coupling sensor, width 5mm.
It have the output state light, if output high level, the lights are off. if output low level ,it on.
If it covered,it will output high level;otherwise it output low level.
Good signal and waveform, with strong driving ability for more than 15mA.
The working voltage of 3.3V to 5V.
Output: digital switch output (0 and 1).
Equipped with a fixed bolt hole, easily install.
Small board PCB size: 3.2 cm x 1.4 cm.
Use the LM393 wide voltage comparer.

Specification:

The DO output interface can be directly connected to a micro-controller IO port, if there is a block detection sensor, such as the speed of the motor encoder can detect.
DO modules can be connected to the relay, limit switch, and other functions, it can also with the active buzzer module, compose alarm.

Wiring specification:

VCC Connect the positive 3.3 5 v power supply
GND Connect power negative
DO TTL switch signal output
AO This module does not work

Package included:

5 x Speed Measuring Sensor Module

Reviews(38)

5.00

Plons

5.0

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.
SEBASTIEN NOIR

5.0

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