# TwinGearSensorRight Part List (Rev. A) # N1: Header1x4.TwinGearSensor - 1x4 Male Header [4/40 Jameco: 160881] R1-2: Resistor470.Short - 470 Ohm 1/8 Watt Resistor [Digikey: 470EBK-ND] U1-2: P5587.Long - Hamamatsu P5587 Photo Reflector [Acroname: R65-P5587]