ROTARY ENCODER SENSOR

Rotary Encoder Sensor is using to measure the speed of the motor by using Arduino Controller

 RE08A is a rotary encoder kit has slotted disc (8 slots) and a simple interface sensor board. Rotary encoder is a sensor or transducer used to convert the data of rotary motion into a series of electrical pulses which is readable by controller. The slotted disc has a 35mm outside diameter with 8 slots that provides 16 transitions.  The optical sensor is used to sense the 16 transitions of the slotted disc. With these transitions, controller is able to recognize the rotary angle of the disc. With this concept, a rotary encoder can be employed in a DC motor shaft for the controller to ‘know’ its current position.  

 This rotary encoder kit has been design with the features of:

•     Industrial grade PCB with high reliability yet professional outlook.
•     Simple 3 pin interface (+5, Gnd and Sig).
•   Included On board green LED as indicator.
•     Direct connection to microcontroller (internal pull-up to 5V).
•     Up to 1 KHz (1000 pulse/sec).
•     Disc size: 35mm (outer diameter) x 3mm(inner diameter)
•     Sensor board size: 12mm (height) x 35mm (length) x 15mm (width)

Electrical Characteristic
 

 True table in normal operating condition

1. Optical sensor at “A” will detect the missing slot  of disc when the disc rotate, further generate pulses at signal pin.
2. Header pin at “B” is input supply. User should connect 5V (+) to this pin.
3. Header pin at “C” is ground of 5V supply, or in other words, the negative terminal of supply.
4. Header pin at “D” is signal output of sensor board. This pin is internally pull-up to 5V, thus no extra component is needed for this sensor to be connected to controller.
5. LED at “E” is an indicator. This LED will light ON  if the disc does not block the optical sensor.