HardLabs

USB UART Breakout

maumana25·kicad-hardware-portfolio·01-usb-uart-breakout/01-usb-uart-breakout.kicad_pcb

USB UART Breakout layout, top view — open source board by maumana25

About the USB UART Breakout

USB UART Breakout is an open source PCB design by maumana25, published on GitHub under the MIT license. It is a 2-layer board measuring 39.5 × 24 mm, with 14 components from 9 distinct parts.

Other key parts include the CH340C and AMS1117-3.3. By type, the board carries 4 capacitors, 4 resistors, 2 ICs, 2 connectors and 2 diodes.

It belongs with the iot & wireless and dev boards & breakouts designs in this gallery.

From the project

From-scratch PCB designs in KiCad, covering embedded, IoT/wireless, and power electronics, with schematics, layouts, Gerbers, BOM, and 3D renders.

Domain: Embedded Status: Complete — schematic, layout, ERC/DRC clean, manufacturing outputs generated Deliverables: schematic · PCB layout · Gerbers + drill · BOM + interactive HTML BOM · 3D renders

A USB-C to 3.3 V-logic UART bridge with DTR#/RTS# broken out for ESP32/Arduino-style auto-reset and auto-program, plus a 6-pin logic header. A small, self-contained bench tool, designed from scratch on a 2-layer board.

USB UART Breakout, from the project README
From the project README

Main components on the USB UART Breakout

CH340CAMS1117-3.3

USB UART Breakout bill of materials (BOM)

14 components, 9 distinct parts.

QtyPartRefs
1
CH340C
U1
1
AMS1117-3.3
U3
1
USB_C
J1
1
Conn_01x06
J2
2
LED
D1, D2
2
10uF
C1, C2
2
0.1uF
C3, C4
2
1K
R1, R2
2
5.1k
R3, R4

USB UART Breakout design files

The KiCad project lives in the maumana25/kicad-hardware-portfolio repository on GitHub; these links point at the commit this page was built from.

USB UART Breakout: common questions

How big is the USB UART Breakout?

The USB UART Breakout measures 39.5 × 24 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the USB UART Breakout?

14 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the USB UART Breakout design files?

From the maumana25/kicad-hardware-portfolio repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the USB UART Breakout design in my own project?

Yes, under the terms of its MIT license, which maumana25 chose for the repository.

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