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2 layers77.3 × 76.7 mmLed matrix 8x4 module, the printed circuit board in 3D

Led matrix 8x4 module

jkga/led_matrix_8x4_module

This repository aims to provide a basic program, schematic diagram, and PCB design for an eight by four (8x4) LED matrix with Arduino and SN74HC595 shift register IC

Size
77.3 × 76.7 mm
Copper layers
2
Thickness
1.6 mm
Parts
69
Nets
58
Pads
206
Tracks, vias
418, 35
Pours
1
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
24 Feb 2022
Updated
10 Mar 2022

Overview

Led matrix 8x4 module is an open-source printed circuit board by jkga, from the jkga/led_matrix_8x4_module repository on GitHub, published under the MIT licence. It is a 2-layer board of 77.3 × 76.7 mm with 69 parts on 58 nets, routed with 418 tracks and 35 vias.

It is built around the 74HC595 and PN2222A. Its parts include 32 diodes, 16 resistors, 8 transistors, 4 capacitors and 4 connectors. It belongs with the lEDs and displays boards of this library.

Main components

2

README

README.md

LED Matrix(8x4) Module

This repository aims to provide a basic program, schematic diagram, and PCB design for an eight by four (8x4) LED matrix with Arduino and SN74HC595 shift register IC

Sketch & Pin Configurations

Arduino Uno Sketch

ModuleArduino
LatchL8
Serial Data InputD11
Clock InputC12
Row 144
Row 235
Row 326
Row 417
Power (+)+5v
Power (-)-GND

Bills of Materials

QTYReferenceValue
1C133uf
1C20.1uf
1C30.1uf
32D1 - D32LED (Vfmin = 1.7v; Ifmax = 0.25mA)
1J11x4 Female Connector
1J21x4 Female Connector
1J31x4 Female Connector
1J42x8 DIP Socket
8Q1 - Q8PN2222A BJT Transistor
84.7k ohms
8510 ohms
1U1SN74HC595N
10Jumper Wires

Demo

L.O.V.E - A Valentine's day message to everyone

https://user-images.githubusercontent.com/10413754/155494353-f9fd05cc-bb8c-47e1-8aa6-f02e38358166.mp4

Schematic Diagram

schematic_diagram

Printed Circuit Board

schematic_diagram

Rendered Model

schematic_diagram

Parts

69
QtyValueFootprintReferences
32LEDLED_THT:LED_D5.0mmD1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +16
84.7kResistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_HorizontalR1, R3, R5, R7, R9, R11, R13, R15
8510Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_HorizontalR2, R4, R6, R8, R10, R12, R14, R16
8PN2222APackage_TO_SOT_THT:TO-92_InlineQ1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
4MountingHoleMountingHole:MountingHole_2.2mm_M2_Pad_ViaH1, H2, H3, H4
20.1ufCapacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mmC2, C4
1100ufCapacitor_THT:CP_Radial_D5.0mm_P2.00mmC1
133ufCapacitor_THT:CP_Radial_D4.0mm_P1.50mmC3
174HC595Package_DIP:DIP-16_W7.62mmU1
1Conn_01x02_FemaleConnector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_HorizontalJ2
1Conn_01x04Connector_PinHeader_2.00mm:PinHeader_1x04_P2.00mm_HorizontalJ1
1Conn_01x04_FemaleConnector_PinHeader_2.00mm:PinHeader_1x04_P2.00mm_HorizontalJ3
1DIP_SOCKET_02x08Package_DIP:DIP-16_W7.62mm_SocketJ4

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Questions

How big is the Led matrix 8x4 module PCB?

It measures 77.3 × 76.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Led matrix 8x4 module use?

69 parts, built around the 74HC595 and PN2222A. 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 Led matrix 8x4 module KiCad files?

From the jkga/led_matrix_8x4_module repository on GitHub, at the commit this page was made from: the board is kicad/led_matrix_8x4_module.kicad_pcb and its schematic kicad/led_matrix_8x4_module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Led matrix 8x4 module design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).