# LM393 IR PROXIMITY SENSOR ## Description A general infrared proximity sensor circuit that can be interfaced with any microcontroller (e.g., Arduino, ESP, etc.). It uses a transmitter (IR LED) and a receiver (photodiode) along with a comparator circuit (LM393N/NOPB) to sense objects. The circuit outputs a digital signal (high/low) based on the sensor's response. ## Project Details - **Owner:** mihir31199 - **Created:** 3/15/2025 - **Last Updated:** 3/17/2025 - **Visibility:** Public ## Key Components ### D1 — [BPV10NF](https://www.flux.ai/jecstronic/bpv10nf.md) - Manufacturer Part Number: BPV10NF - Datasheet URL: https://www.vishay.com/docs/81503/bpv10nf.pdf - Part Type: Sensor - Manufacturer Name: Vishay Semiconductor Opto Division - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### LED1 — [IR LED THT D5.0mm Black](https://www.flux.ai/jharwinbarrozo/ir-led-tht-d5p0mm-black.md) - Part Type: Sensor **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [LED 0603 (1608 Metric)](https://www.flux.ai/jharwinbarrozo/led-0603-1608-metric.md) - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### U1 — [LM393N/NOPB](https://www.flux.ai/adrian95/lm393nnopb.md) - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: LM393N/NOPB - Datasheet URL: https://www.snapeda.com/parts/LM2903D/Texas%20Instruments/datasheet/ - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1IN- [pin 2] - 1IN+ [pin 3] - 1OUT [pin 1] - 2IN- [pin 6] - 2IN+ [pin 5] - 2OUT [pin 7] - GND [pin 4] - VCC [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/mihir31199/lm393-ir-proximity-sensor](https://www.flux.ai/mihir31199/lm393-ir-proximity-sensor).* --- *Generated from [https://www.flux.ai/mihir31199/lm393-ir-proximity-sensor](https://www.flux.ai/mihir31199/lm393-ir-proximity-sensor)*