2 layers139.1 × 123.3 mm Line sensor, the printed circuit board in 3D

Line sensor

team repository for Robocup Junior Lightweight Australia 2024

Size: 139.1 × 123.3 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 66
Nets: 69
Pads: 265
Tracks, vias: 552, 38
Pours: 1
Routed: Yes
KiCad: KiCad 7 (file 20221018)
Created: 21 May 2024
Updated: 20 Oct 2024

Overview

Line sensor is an open-source printed circuit board by enenflash, from the enenflash/YounglingSlayer repository on GitHub. It is a 2-layer board of 139.1 × 123.3 mm with 66 parts on 69 nets, routed with 552 tracks and 38 vias.

It is built around the CD74HC4067M and TCRT5000. Its parts include 33 resistors, 7 connectors, 1 IC and 1 diode. It belongs with the sensors and measurement boards of this library.

Main components

README

README.md

YounglingSlayer

Team repository for Robocup Junior Lightweight Australia 2024

Team Info

Members: Isabelle Tang (Captain), Ryan Beikrasouli (Programmer), Cruz Barry-Hardy (3D Designer), Albie Gardiner (3D Designer)
State: Western Australia
School: Rossmoyne Senior High School

Programming

We use C++ in ArduinoIDE to program our microcontroller (Teensy 4.1). (See code-explanations) We also use Raspberry Pi Pico as part of our line sensor.

3D Printing

We design our parts in Fusion360. (See mechanical design/) All parts are printed in PLA.

PCB Design

We design our PCBs in KiCAD 7.0 and order from JLCPCB. (See pcbs/). The schematics are based on circuits we tested using breadboards.

All designs are original other than the BBR IR Seeker

Parts

Qty	Value	Footprint	References
16	220R	Resistor_SMD:R_0805_2012Metric	R1, R2, R5, R7, R9, R11, R13, R15, R17, R19, R21, R23, R25, R27, R29, R31
16	4K7	Resistor_SMD:R_0805_2012Metric	R3, R4, R6, R8, R10, R12, R14, R16, R18, R20, R22, R24, R26, R28, R30, R32
16	TCRT5000	TCRT5000:TCRT5000	T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16
8	MountingHole	MountingHole:MountingHole_3.2mm_M3_Pad	H1, H2, H3, H4, H5, H6, H7, H8
1	22R	Resistor_SMD:R_0805_2012Metric	R33
1	CD74HC4067M	Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm	U1
1	Comm.	Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical	J6
1	Comm.	Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical	J4
1	LED	LED_SMD:LED_0805_2012Metric	D1
1	Pico_Headers_Bottom	Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical	J3
1	Pico_Headers_Left	Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical	J1
1	Pico_Headers_Right	Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical	J2
1	Power	Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical	J7
1	Power	Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical	J5

Questions

How big is the Line sensor PCB?

It measures 139.1 × 123.3 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Line sensor use?

66 parts, built around the CD74HC4067M and TCRT5000. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Line sensor KiCad files?

From the enenflash/YounglingSlayer repository on GitHub, at the commit this page was made from: the board is pcbs/line_sensor-26-08/line_sensor.kicad_pcb and its schematic pcbs/line_sensor-26-08/line_sensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Line sensor design in my own project?

Its repository states no licence, so its author keeps all rights: ask enenflash before reusing the design.

Category and platform

Sensors and measurement

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/enenflash-younglingslayer-line-sensor" title="Line sensor in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/enenflash-younglingslayer-line-sensor.jpg" alt="Line sensor" width="1200" height="900">

A picture that opens the board, for a README

[![Line sensor](https://pcbkit.io/embed/boards/enenflash-younglingslayer-line-sensor.jpg?size=s)](https://pcbkit.io/boards/enenflash-younglingslayer-line-sensor)

Source

Repository: enenflash/YounglingSlayer
Board file: pcbs/line_sensor-26-08/line_sensor.kicad_pcb
Commit: bac235a
Licence: Not stated

Similar boards

2 layers
LineFollowing Sensor
BRaj36001k/LineFollowing-Sensor

50 parts1
2 layers200 × 78.8 mm
Openridingcontroller rev2
Squalius-cephalus/OpenRidingController
D.I.Y horse riding controller for the PC.
30 parts13
2 layers66.4 × 52.5 mm
Watermeter v0.4
rbisschops/mySensors
mySensors
39 parts6
2 layers135.8 × 56.1 mm
Power board
xtarke/automated_buggy
This shield connects microcontroller (MSP-EXP430FR2355) pins to the car's power board. Go to Power Board for more hardware information.
87 parts5GPL-3.0
2 layers160 × 42 mm
ESP kicad2
Amrlxyz/esp-lfr-buggy
2nd Year Embedded Systems Project (ESP) - Line Following Robot Buggy
28 parts4
2 layers34.1 × 108.8 mm
Meshmerize
ChinmayLonkar/MAZEBLAZE
Meshmerize BOT
62 parts3
2 layers103 × 80 mm
EduRoMAA EduCIAA
ciiiutnfrc/eduromaa
Versión educativa del robot móvil RoMAA (EduRoMAA)
81 parts3GPL-3.0
2 layers150 × 100 mm
Maze kiCad
billtsol/Maze
This project demonstrates how to use an Arduino board, IR sensors, and a motor driver shield to create a maze-solving robot.
39 parts2