2 layers53 × 53 mm
Hair electrolysis machine
zoemaestra/hair-electrolysis-machine-usb-c
A fork of scd31's hair electrolysis machine but with USB-C and optimised for cheaper assembly with JLCPCB
83 parts168CERN-OHL-P-2.0
2 layers30.8 × 18.5 mm
MiniBench
Agent-Bid/MiniBenchLaptop powered mini bench power supply
- Size
- 30.8 × 18.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 12
- Pads
- 65
- Tracks, vias
- 44, 26
- Pours
- 25
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Mar 2026
- Updated
- 30 Mar 2026
Overview
MiniBench is an open-source printed circuit board by Agent-Bid, from the Agent-Bid/MiniBench repository on GitHub, published under the MIT licence. It is a 2-layer board of 30.8 × 18.5 mm with 25 parts on 12 nets, routed with 44 tracks and 26 vias.
It is built around the AMS1117-3.3, AP2112K-1.8 and 10174819-00011LF, with the SMF18A among its other parts. Its parts include 10 capacitors, 5 resistors, 4 diodes, 2 ICs and 2 connectors. It belongs with the power and computers and single-board computers boards of this library.
Main components
4
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
AP2112K-1.8
SOT251.8V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised10174819-00011LF
-- Lack of specifications ROHSAmphenolUncategorised
SMF18A
SOD-123FL-55℃~+150℃ 18V 1uA 200W@10/1000us 22.1V 29.2V 6.8A@10/1000us IEC 61000-4-2 TVS Unidirectional SOD-123FL ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
README
README.mdMiniBench
A compact USB-C powered bench power supply board designed to provide common rail voltages directly from your laptop or a USB-C power adapter.
Features
- USB-C Input: Convenient power sourcing from modern laptops and chargers.
- Triple Voltage Output: Provides stable power rails for most low-power electronics development:
- 5.0V
- 3.3V
- 1.8V
- Compact Form Factor: Small enough to fit in a pocket or a small electronics kit.
Usage
Simply plug into a USB-C port to provide power to the onboard regulators, then use the designated headers/pads to power your breadboard or prototype.
License
Licensed under the MIT License (see LICENSE file for details).
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 5K1 | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5 |
| 4 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2, C5, C8, C10 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C6, C7, C9 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D2, D3, D4 |
| 2 | 10nF | Capacitor_SMD:C_0603_1608Metric | C3, C4 |
| 1 | 10174819-00011LF | GlobalFP:AMPHENOL_10174819-00011LF | J1 |
| 1 | 3A PTC | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | AP2112K-1.8 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | FerriteBead | Capacitor_SMD:C_0603_1608Metric | FB1 |
| 1 | SMF18A | Diode_SMD:D_1206_3216Metric | D1 |
| 1 | Screw_Terminal_01x04 | TerminalBlock:TerminalBlock_Xinya_XY308-2.54-4P_1x04_P2.54mm_Horizontal | J3 |
Questions
How big is the MiniBench PCB?
It measures 30.8 × 18.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MiniBench use?
25 parts, built around the AMS1117-3.3, AP2112K-1.8, 10174819-00011LF and SMF18A. 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 MiniBench KiCad files?
From the Agent-Bid/MiniBench repository on GitHub, at the commit this page was made from: the board is MiniBench/MiniBench.kicad_pcb and its schematic MiniBench/MiniBench.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MiniBench 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).
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