An encoder is used to measure rotational speed of motors or wheels.
For light based encoders a series of markings or holes are made around the rotating disk that are used to break a light beam or change reflectivity that is detected using an infrared sensor.
Magnetic based encoders use a disk with alternating magnetic orientation as markings around it that are read by a Hall effect sensors.
As the wheel rotates these markings or magnetic changes can be counted and computed against time to determine the rotational speed.
Encoders can be supplied fixed to motors or as separate items for adding to anything that rotates.
Code: SKU-006172
These magnetic discs can be used with our 20D mm metal gearmotors (extended motor shaft versions only) as part of a quadrature encoder system that offers 12 counts per revolution . They are 2 mm thick with an outer diameter of 9.7 mm and an inner diameter of 2.0 mm. More Details...
Special Order
Shipping from $9.90
+3395 more from our supplier in 7-10 days
Code: SKU-003904
These magnetic discs can be used with our 20D mm metal gearmotors (extended motor shaft versions only) as part of a quadrature encoder system that offers 20 counts per revolution . They are 2 mm thick with an outer diameter of 9.7 mm and an inner diameter of 2.0 mm. More Details...
Special Order
Shipping from $9.90
+575 more from our supplier in 7-10 days
Code: SKU-003903
These magnetic discs can be used with our mini plastic gearmotors (extended motor shaft versions only) as part of a quadrature encoder system that offers 12 counts per revolution . They are 2 mm thick with an outer diameter of 9.7 mm and an inner diameter of 1.5 mm. More Details...
Special Order
Shipping from $9.90
+3115 more from our supplier in 7-10 days
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