Obstacle detector
About the Obstacle detector PCB
Obstacle detector is an open source PCB design by JKCadilo14-CpE, published on GitHub under the MIT license. It is a 2-layer board measuring 76.2 × 45.7 mm, with 8 components from 7 distinct parts.
By type, the board carries 2 transistors, 2 diodes, 2 resistors, 1 connector and 1 speaker.
From the project
Collection of electronic circuits I designed, tested, and documented using KiCad
A beginner-friendly infrared obstacle detector project using an IR LED, photodiode, BC547 transistor stages, and a speaker output footprint.
This project demonstrates a reflected-infrared obstacle detector. The IR LED emits infrared light toward the sensing area. When a nearby object reflects that infrared light toward the photodiode, the transistor stages respond and drive the output device.
Obstacle detector bill of materials (BOM)
8 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | BC547 | TO-92_Inline | Q1, Q2 |
| 1 | input | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J1 |
| 1 | Speaker | Buzzer_12x9.5RM7.6 | LS1 |
| 1 | IR LED | LED_D5.0mm_Clear | D1 |
| 1 | Photodiode | LED_D5.0mm_IRBlack | D2 |
| 1 | 100 ohms | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 56K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
Obstacle detector design files
The KiCad project lives in the JKCadilo14-CpE/DIY-Circuits repository on GitHub; these links point at the commit this page was built from.
Obstacle detector: common questions
How big is the Obstacle detector PCB?
The Obstacle detector measures 76.2 × 45.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Obstacle detector?
8 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Obstacle detector design files?
From the JKCadilo14-CpE/DIY-Circuits repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Obstacle detector design in my own project?
Yes, under the terms of its MIT license, which JKCadilo14-CpE chose for the repository.
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