HardLabs

Breadboard-Power-Supply

Ziegen-EE·Breadboard-Power-Supply·Breadboard Power Supply/KiCad/PCB/Breadboard Power Supply.kicad_pcb

Breadboard-Power-Supply PCB layout, top view — open source board by Ziegen-EE

About the Breadboard-Power-Supply PCB

Breadboard-Power-Supply is an open source PCB design by Ziegen-EE, published on GitHub under the MIT license. It is a 2-layer board measuring 30.2 × 52.8 mm, with 17 components from 13 distinct parts.

Other key parts include the LM317T and LM7805CT/NOPB. By type, the board carries 7 connectors, 3 capacitors, 3 resistors, 2 ICs, 1 switch and 1 diode.

It belongs with the power & battery and dev boards & breakouts designs in this gallery.

From the project

A compact PCB breadboard power supply that delivers stable 3.3V and 5V outputs with onboard regulation, switchable voltage rails, and standard breadboard compatibility. Designed for quick prototyping, reliable testing, and clean power delivery in electronics projects.

A compact PCB breadboard power supply designed to provide clean, stable 3.3V and 5V rails for prototyping. It features onboard regulation, switchable voltage outputs, and full compatibility with standard breadboards—making it ideal for hobbyists, students, and rapid development workflows.

- Selectable 3.3V / 5V regulated outputs - Standard breadboard-friendly dual-rail layout - Barrel jack + toggle power switch - High-quality capacitors for stable operation - Compact through-hole design, easy to assemble

Breadboard-Power-Supply, from the project README
From the project README

Main components on the Breadboard-Power-Supply

LM317TLM7805CT/NOPB

Breadboard-Power-Supply bill of materials (BOM)

17 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LM317T
LM317_TO-220
U1
1
LM7805CT/NOPB
LM7805_TO220
U2
1
EJ508B
Barrel_Jack_Switch
J1
2
1729128
Screw_Terminal_01x02
J2, J5
2
TSW-101-24-G-T
Conn_01x03_Pin
J3, J7
2
67997-402HLF
Conn_01x02_Pin
J4, J6
1
EG1218
S1
1
SSL-LX3054ID
LED
D1
1
FK20X7S1H106KR000
10uF
C1
1
RCER72A105K2DBH03A
1uF
C2
1
S104Z93Z5VL83L0R
0.1uF
C3
2
ROX1SJ330R
330
R1, R2
1
ROX1SJ560R
560
R3

Breadboard-Power-Supply design files

The KiCad project lives in the Ziegen-EE/Breadboard-Power-Supply repository on GitHub; these links point at the commit this page was built from.

Breadboard-Power-Supply: common questions

How big is the Breadboard-Power-Supply PCB?

The Breadboard-Power-Supply measures 30.2 × 52.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Breadboard-Power-Supply?

17 components, from 13 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Breadboard-Power-Supply design files?

From the Ziegen-EE/Breadboard-Power-Supply repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Breadboard-Power-Supply design in my own project?

Yes, under the terms of its MIT license, which Ziegen-EE chose for the repository.

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