SparkFun
Photo Interrupter - GP1A57HRJ00F
The GP1A57HRJ00F is a slotted optical sensor (photo interrupter) with an infrared emitter on one upright and a shielded infrared detector on the other. When ...
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The GP1A57HRJ00F is a slotted optical sensor (photo interrupter) with an infrared emitter on one upright and a shielded infrared detector on the other. When an object passes through the 10 mm gap between the uprights, it breaks the IR beam and the detector registers the interruption.
Key Features
- 10 mm Gap Width – Slot for object detection
- Infrared Emitter & Detector – Shielded phototransistor receiver
- Simple Digital Output – Beam broken or unbroken
Ideal For
- Optical limit switches and end stops
- Encoder wheels and RPM counting
- Object detection and pellet dispensing
- General-purpose beam-break sensing
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- encoder
- An encoder is a sensor that converts the rotation or position of a shaft, knob or dial into electrical signals, reporting movement as incremental steps and direction, or as an absolute position. It is used to track how far something has turned, which matters for precise positioning, speed control, repeatable movement, or using a rotary knob as an input.
- phototransistor
- A light-sensitive transistor that changes its electrical output when light hits it. Compared with a modulated IR receiver, a simple phototransistor can be more affected by ambient light, so it may need extra filtering or careful setup.
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GP1A57HRJ00F Datasheet
Datasheet · 148.2 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 504.2 KB · Click any page to view full size
Related Tutorials
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