Encoder for Pololu Wheel 42x19mm - PL-1217

Encoder for Pololu Wheel 42x19mm - PL-1217 info

Encoder for Pololu Wheel 42x19mm is designed to work with Pololu micro metal gearmotors by holding two infrared reflectance sensors inside the hub of a Pololu 42×19mm wheel and measuring the movement of the twelve teeth along the wheel’s rim. The two sensors are spaced to provide waveforms approximately 90 degrees out of phase, allowing the direction of rotation to be determined and providing four counts per tooth for a resolution of 48 counts per wheel rotation. Each analog sensor signal is fed to a comparator with hysteresis to provide glitch-free digital outputs. The compact layout of Encoder for Pololu Wheel 42x19mm fits all of the components within the envelope of the hub and tire, allowing the board to be mounted between the motor and a chassis. The encoder is calibrated for operation from 4.5 V to 5.5 V, but it can be recalibrated for operation at 3.3 V.

Encoder for Pololu Wheel 42x19mm - General Specifications

• Designed to work with Pololu micro metal gear motors
• Operating voltage can be modified
• Small sized, fits between motor and chassis
• Two digital outputs

Encoder for Pololu Wheel 42x19mm - Technical Specifications

• Operating voltage: 4.5 V to 5.5 V (encoder can be modified for lower voltages)
• Weight: 1.6 g
• 14 mA current consumption at 5.0 V
• 48 counts per revolution (~3mm resolution)

Videos

Documents

Pololu AVR C/C++ Library User’s Guide: https://www.pololu.com/docs/0J20

Pololu AVR Library Command Reference: https://www.pololu.com/docs/0J18

References

Pololu Web Site: https://www.pololu.com/product/1217