Photoelectric Speed Sensor Encoder Coded Disc Code Wheel

The photoelectric encoder module consists of two discs located across each other. There is a light source on one disc and two light-receiving elements (photoresistors) on the other disc. Between these disks, there is a moving disc with evenly spaced slits. By rotating this moving disc, the light receivers A and B are alternately connected and disconnected. So, a square wave will be generated at the outputs. If you count these pulses, you can calculate the amount of rotation. In addition, there is a phase difference of 90 degrees between the two outputs A and B, so we can find the direction of rotation by checking which output is ahead of the other.

Technical Specification:

• Number of lines: 100 lines
• Outer diameter: 22mm
• Hole diameter: 3.5mm
• Thickness: 0.3mm
• Material: alloy steel
• Production process: laser cutting
• Supply voltage: 5V (3.3V is also available)
• Wiring: Red 5V black GND
• Output signal: 5Vp-p two-phase signal output

Features:

• Small and Easy to use the module
• It offers the fast response at a very good accuracy
• Two signal lines, one yellow, one blue
• Yellow and blue are two TTL level signals

Applications:

• Robotics industry
• Research and educational projects