2 layers113.4 × 110.6 mm Controller group52, the printed circuit board in 3D

Controller group52

linjunway/Embedded-Systems-Sorting-Machine

Designed and built a fully automated table-tennis ball sorting machine. This project highlights the use of custom mechanical and 3D-printed parts as well as a custom controller circuit board powered by an Atmega328-PU chip. This controller functions as the brain of the rig, allowing sensors and actuators to communicate with each other.

Open in PCBKit

Size: 113.4 × 110.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 57
Nets: 65
Pads: 202
Tracks, vias: 368, 72
Pours: 1
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 12 Jun 2026
Updated: 12 Jun 2026

Overview

Controller group52 is an open-source printed circuit board by linjunway, from the linjunway/Embedded-Systems-Sorting-Machine repository on GitHub. It is a 2-layer board of 113.4 × 110.6 mm with 57 parts on 65 nets, routed with 368 tracks and 72 vias.

It is built around the ATMEGA328P-PU, AO3400 and 1N4148W. Its parts include 12 resistors, 12 connectors, 11 capacitors, 7 ICs and 4 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

Parts

Qty	Value	Footprint	References
8	10k	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	R3, R4, R6, R7, R8, R9, R10, R11
8	MountingHole	MountingHole:MountingHole_3.2mm_M3	H1, H2, H3, H4, H5, H6, H7, H8
6	0.1uF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C4, C5, C6, C8, C9, C10
3	220	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	R2, R5, R12
2	10uF	Capacitor_SMD:CP_Elec_4x5.4	C1, C11
2	1N4148W	Diode_SMD:D_SOD-123	D1, D2
2	22pF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C3, C7
2	AO3400	AO3400:SOT23	U3, U4
1	10K	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	R1
1	16MHz	Crystal:Crystal_HC49-4H_Vertical	Y1
1	1uF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C2
1	2A12V	Fuse:Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder	F1
1	ATmega328P-P	Package_DIP:DIP-28_W7.62mm	U1
1	Button	Button_Switch_THT:SW_PUSH_6mm_H9.5mm	SW1
1	Color1	Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal	U6
1	Color2	Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal	U7
1	DCMotor	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J6
1	Driver	Package_SO:SSOP-24_5.3x8.2mm_P0.65mm	U2
1	I2C Bus	Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm	U5
1	IR1	Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical	J1
1	IR2	Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical	J11
1	IR3	Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical	J12
1	LED	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D4
1	LED_RGB	LED_SMD:LED_RGB_5050-6	D3
1	LM2596_out	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J9
1	LM2596_return	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J10
1	Power	Connector_BarrelJack:BarrelJack_Horizontal	J2
1	Rewrite	Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal	J3
1	Servo1	Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical	J4
1	Servo2	Connector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical	J5
1	Solenoid1	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J7
1	Solenoid2	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J8

Questions

How big is the Controller group52 PCB?

It measures 113.4 × 110.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Controller group52 use?

57 parts, built around the ATMEGA328P-PU, AO3400 and 1N4148W. 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 Controller group52 KiCad files?

From the linjunway/Embedded-Systems-Sorting-Machine repository on GitHub, at the commit this page was made from: the board is PCB/controller_group52.kicad_pcb and its schematic PCB/controller_group52.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Controller group52 design in my own project?

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

Category and platform

AVR (ATmega, ATtiny)

Topics

3d-printing arduino electronics-engineering kicad-pcb mechanical-engineering project-design project-management embedded-systems

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/linjunway-embedded-systems-sorting-machine" title="Controller group52 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/linjunway-embedded-systems-sorting-machine.jpg" alt="Controller group52" width="1200" height="900">

A picture that opens the board, for a README

[![Controller group52](https://pcbkit.io/embed/boards/linjunway-embedded-systems-sorting-machine.jpg?size=s)](https://pcbkit.io/boards/linjunway-embedded-systems-sorting-machine)

Source

Repository: linjunway/Embedded-Systems-Sorting-Machine
Board file: PCB/controller_group52.kicad_pcb
Commit: d678cfb
Licence: Not stated

Similar boards

2 layers42.8 × 50.5 mm
CatFlapV2
ifreislich/CatFlap

53 partsBSD-2-Clause
2 layers72 × 54 mm
UNOvx
bitomaxsp/UNOvx
Arduino-like ATMega328 board
40 partsMIT
2 layers93.5 × 61 mm
01232330B
JUSTICE2330/Arduino-uno-PCB

61 parts
2 layers68.6 × 53.3 mm
YukuyukuUNO
zukki4123/yukuyuku_UNO_R3
ArduinoUNO R3の互換機です。純正より安価で壊れにくくなっています。
50 partsMIT
2 layers55 × 80 mm
Board esp32 v2
sudomesh/disaster-radio
A (paused) work-in-progress long-range, low-bandwidth wireless disaster recovery mesh network powered by the sun.
101 parts1.1k
2 layers59.2 × 52.9 mm
Magic epaper
fossasia/magic-epaper-hardware
Magic ePaper Hardware
57 parts1kApache-2.0
2 layers155.5 × 130 mm
Einkpicframe
Spritetm/picframe_colepd
A WiFi picture frame allowing for remote photo uploads, using an ESP32-C3 and a 5.6" color E-ink display
60 parts97
2 layers100 × 93 mm
Speeduino base
Tjeerdie/SPECTRE
Speeduino compatible engine control unit (ECU) based around black STM32F407VET6 board.
213 parts59GPL-3.0