

Breadboard regulator
Breadboard regulator to split 12V input into 5V and 3.3V.
- Size
- 138.7 × 25.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 8
- Pads
- 39
- Tracks, vias
- 89, 0
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 6 Aug 2023
- Updated
- 26 Aug 2023
Overview
Breadboard regulator is an open-source printed circuit board by iamdejan, from the iamdejan/breadboard-regulator repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 138.7 × 25.9 mm with 18 parts on 8 nets, routed with 89 tracks and 0 vias.
Its parts include 4 capacitors, 3 diodes, 3 connectors, 2 resistors and 2 ICs. It belongs with the power boards of this library.
README
README.mdBreadboard Regulator
This project aims to replicate the work of MB102 breadboard power supply module, by receiving input from DC barrel jack and convert it into 5V and 3.3V output.
Components
- PRT-10811 DC barrel jack
- Datasheet:
- Sparkfun
- Input voltage: 9-12V. Usually, 9V is okay, but depending on the diode used, we may need to use 12V.
- Datasheet:
- BAT43 Schottky Diode
- Datasheet:
- In case where Schottky diode is not available, we can use 1N4001 diode.
- Use 12V input if we use 1N4001 diode to compensate for voltage drop.
- LM7805 IC
- Datasheet:
- Dependencies:
- Input capacitor (C-in): 0.33 μF polarized capacitor
- Input-output noise filtering capacitor(s): 0.1 μF ceramic capacitor
- Output capacitor (C-out): 0.1 μF polarized capacitor
- Power indicator: Red LED 5mm
- Pin header 2.54mm
- LD1117V33 IC
- Datasheet:
- Dependencies:
- Input-output capacitor (C-in and C-out): 10 μF
- Input-output noise filtering capacitor(s): 1 μF
- Power indicator: Red LED 5mm
- Pin header 2.54mm
Output
- +5V and GND male pins.
- +3.3V and GND male pins.How to Use
Open breadboard-regulator.kicad_pro file using KiCAD.
NOTE: I'm using KiCAD 7.0.6 for development. Please check if you have the same or compatible version.
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 0.1 μF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | CNF1, CNF2 |
| 2 | 1 μF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | CNF3, CNF4 |
| 2 | 10 μF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3, C4 |
| 2 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 2 | Conn_01x02_Pin | BeginnerModules:PinHeader_1x02_P2.54mm_Vertical | J2, J3 |
| 2 | LED | BeginnerModules:LED_D5.0mm | D2, D3 |
| 1 | 0.1 μF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C2 |
| 1 | 0.33 μF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | D_Schottky | Diode_THT:D_A-405_P7.62mm_Horizontal | D1 |
| 1 | LD1117V33_TO-220 | Package_TO_SOT_THT:TO-220-3_Vertical | U3 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
Questions
How big is the Breadboard regulator PCB?
It measures 138.7 × 25.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Breadboard regulator use?
18 parts. 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 Breadboard regulator KiCad files?
From the iamdejan/breadboard-regulator repository on GitHub, at the commit this page was made from: the board is breadboard-regulator.kicad_pcb and its schematic breadboard-regulator.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Breadboard regulator design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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