Gravity Light Barrier Module / Limit Switch

The Gravity photo interrupter from DFRobot is a slotted light barrier with the ITR9608: infrared emitter (940 nm) and receiver face each other in a 5 mm wide slot. When an object, a flag or a slotted disc interrupts the light beam, the digital output signal changes. This is suitable as a contactless limit switch, for counting and for measuring speeds. It works with 3.3 V and 5 V and fits Arduino, micro:bit and UNIHIKER.

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces
• Gravity IO Expansion Shield for Arduino V7.1

Features:

• ITR9608 slotted light barrier with infrared emitter and receiver
• Slot width 5 mm, light source 940 nm
• Digital output, fast enough for interrupt pins
• Operation with 3.3 V and 5 V
• Gravity 3-pin connector: D, VCC, GND

Application Examples:

• Counting parts on a conveyor
• Speed measurement with a slotted disc
• End position and reference point on axes
• Detecting paper or inserted cards

Documentation:

• Wiki DFRobot DFR1129
• Schematic (image)
• Dimension drawing (image)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR1129
• Sensor: ITR9608
• Wavelength: 940 nm (infrared)
• Slot width: 5.0 mm
• Output: digital
• Operating voltage: 3.3 V to 5 V
• Interface: Gravity PH2.0-3P (D, VCC, GND)
• Dimensions: 27 × 32 × 13 mm
• Weight: 4 g, with packaging and cable 12 g

Scope of Delivery:

• 1× Gravity photo interrupter module
• 1× Gravity sensor cable 3-pin digital, 30 cm