2 layers290.1 × 130 mm
2 layers67.5 × 25 mm
Youtube tut USB PWR 3.3V
diodeengineer/ams1117_LDOThis is a simple 3.3V linear voltage regulator board based on the AMS1117-3.3. It converts 5V input to 3.3V output and can be used to power ESP8266, ESP32, sensors, and other 3.3V logic devices.
- Size
- 67.5 × 25 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 6
- Nets
- 6
- Pads
- 26
- Tracks, vias
- 18, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 6 Jun 2025
- Updated
- 6 Jun 2025
Overview
Youtube tut USB PWR 3.3V is an open-source printed circuit board by diodeengineer, from the diodeengineer/ams1117_LDO repository on GitHub, published under the MIT licence. It is a 2-layer board of 67.5 × 25 mm with 6 parts on 6 nets, routed with 18 tracks and 0 vias.
It is built around the AMS1117-3.3. Its parts include 2 capacitors, 2 connectors, 1 IC and 1 diode.
Main components
1README
README.mdAMS1117 3.3V Regulator Module (LDO)
This is a simple 3.3V linear voltage regulator board based on the AMS1117-3.3. It converts 5V input to 3.3V output and can be used to power ESP8266, ESP32, sensors, and other 3.3V logic devices.
Features
- Input Voltage: 4.5V to 6.5V (typically 5V)
- Output Voltage: Fixed 3.3V
- Max Output Current: ~800mA (with proper heat dissipation)
- Low dropout (LDO): ~1.1V typical
- PCB designed in KiCad
Pinout
| Pin | Description |
|---|---|
| IN | 5V Input |
| GND | Ground |
| OUT | 3.3V Output |
Usage
- Connect 5V to
IN, Ground toGND - You’ll get regulated 3.3V at the
OUTpin - Use decoupling capacitors for stability (e.g., 10uF and 22uF at IN and OUT resp.)
Files Included
- KiCad project files (
.kicad_pcb,.sch, etc.) - Gerber files for fabrication
- Schematic PDF
- Board render
Preview
---
---
For powering ESPs and low-voltage devices
Parts
6| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 10uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 22uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | LED | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D1 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-AB_Molex_47590-0001 | J1 |
Questions
How big is the Youtube tut USB PWR 3.3V PCB?
It measures 67.5 × 25 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Youtube tut USB PWR 3.3V use?
6 parts, built around the AMS1117-3.3. 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 Youtube tut USB PWR 3.3V KiCad files?
From the diodeengineer/ams1117_LDO repository on GitHub, at the commit this page was made from: the board is youtube_tut_USB_PWR_3.3V.kicad_pcb and its schematic youtube_tut_USB_PWR_3.3V.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Youtube tut USB PWR 3.3V 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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