The code and schematic can be found here on Github. It includes a discussion of how the sensor works and modifying it to work on an Arduino Uno.
Tuesday, June 2, 2015
CNY70 Tachometer
Here are some photographs of a CNY70 Reflective Optical Sensor mounted on a little board for use as a tachometer.
In the photograph below the reflector can be seen. It is simply a piece of white paper glued to the fan rotor.
Here it is with the MSP-EXP430F5529 spitting out RPM values to the serial monitor. I've turned the fan off and it is slowing down.
The code and schematic can be found here on Github. It includes a discussion of how the sensor works and modifying it to work on an Arduino Uno.
The code and schematic can be found here on Github. It includes a discussion of how the sensor works and modifying it to work on an Arduino Uno.
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