4 layers100 × 54 mm
32Bit shift register
MaltWhiskey/Mega-Cube
16x16x16 PL9823 Cube with Teensy 4.0 and FlexIO driver
64 parts766
2 layers54 × 85.7 mm
Seven segment display
virgilreturns/seven-segment-displayThe objectives of this project are to gain experience with configuring 32-bit microcontrollers, coding in C using the STMCubeIDE, learning how to use Git, using kicad to design footprints and PCBs, learning how to get…
- Size
- 54 × 85.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 28
- Pads
- 56
- Tracks, vias
- 113, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Apr 2025
- Updated
- 15 Jul 2025
Overview
Seven segment display is an open-source printed circuit board by virgilreturns, from the virgilreturns/seven-segment-display repository on GitHub. It is a 2-layer board of 54 × 85.7 mm with 11 parts on 28 nets, routed with 113 tracks and 0 vias.
It is built around the 74AHC595D. Its parts include 8 resistors, 1 IC and 1 connector. It belongs with the lEDs and displays boards of this library.
Main components
1README
README.mdseven-segment-display
Description:
Embedded Microcontroller NUCELO-F401RE Multi-Digit Seven Segment LED Driver using Master-Transmit Only SPI communication with 74HC595 Shift Register.
The objectives of this project are to gain experience with configuring 32-bit microcontrollers, coding in C using the STMCubeIDE, learning how to use Git, using kicad to design footprints and PCBs, learning how to get the PCBs manufactured, and learning how to order correct components for cheap.
This project spanned two months to complete. The code is open-source and free to use.
Signal Processing Flow Chart:
Final Circuit Design
Final PCB Design
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 660 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 |
| 1 | 74AHC595 | Package_DIP:DIP-16_W7.62mm_Socket | U1 |
| 1 | Conn_01x12_Pin | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J3 |
| 1 | LTC-55623G | Library:LTC_5623G-SDIP | DS1 |
Questions
How big is the Seven segment display PCB?
It measures 54 × 85.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Seven segment display use?
11 parts, built around the 74AHC595D. 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 Seven segment display KiCad files?
From the virgilreturns/seven-segment-display repository on GitHub, at the commit this page was made from: the board is kicad/seven_segment_display/seven_segment_display.kicad_pcb and its schematic kicad/seven_segment_display/seven_segment_display.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Seven segment display design in my own project?
Its repository states no licence, so its author keeps all rights: ask virgilreturns before reusing the design.
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