The HRUSB-MaxSonar-EZ4 is the narrowest beam width sensor that is also the least sensitive to side objects offered in the HRUSB-MaxSonar-EZ sensor line. The HRUSB-MaxSonar-EZ4 is an excellent choice when only larger objects need to be detected.
The MaxBotix high resolution MB1433 HRUSB-MaxSonar-EZ3 is a narrow beam sensor with good side object rejection.
The MaxBotix high resolution MB1413 HRUSB-MaxSonar-EZ1 is a great choice for use where sensitivity is needed along with side object rejection.
Use these roll pins to fix sprockets to a shaft and keep them locked in place.