Usb to uart converter

ajkumar-1907·power-converter-lib·usb-to-uart-converter/usb-to-uart-converter.kicad_pcb

Usb to uart converter PCB layout, top view — open source board by ajkumar-1907

About the Usb to uart converter PCB

Usb to uart converter is an open source PCB design by ajkumar-1907, published on GitHub under the MIT license. It is a 2-layer board measuring 31 × 15 mm, with 19 components from 9 distinct parts.

Other key parts include the CP2102N-Axx-xQFN28. By type, the board carries 7 resistors, 5 diodes, 4 capacitors, 2 connectors and 1 IC.

It belongs with the usb & debug tools and iot & wireless designs in this gallery.

From the project

Open-source library of power electronics converter topologies — KiCad schematics, working principles, use cases, and design notes for DC-DC, AC-DC, DC-AC, and AC-AC converters. Free to use, modify, and build on.

A compact USB-C to serial (UART) adapter based on the Silicon Labs CP2102N. It lets a PC talk to microcontrollers and modules over TX/RX, and has a DTR-driven RST pin for Arduino-style auto-reset during upload.

Most microcontrollers (ESP32, ESP8266, AVR, STM32) and many modules (GPS, GSM, Bluetooth) talk over a UART, but modern PCs only have USB. This board bridges the two. The CP2102N enumerates as a virtual COM port on the PC and converts USB packets to and from TX/RX serial data. It also exposes the modem-control line DTR, which is used to reset the target automatically.

Usb to uart converter, from the project README — From the project README

Main components on the Usb to uart converter

CP2102N-Axx-xQFN28

Usb to uart converter bill of materials (BOM)

19 components, 9 distinct parts.

Qty	Part	Footprint	Refs
1	CP2102N-Axx-xQFN28	QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm	U1
1	USB_C_Receptacle_USB2.0_16P	USB_C_Receptacle_HRO_TYPE-C-31-M-12	J1
1	Conn_01x05_Pin	PinHeader_1x05_P2.54mm_Horizontal	J2
2	LED	LED_0201_0603Metric	D1, D2
3	LESD5D5.0CT1G	TVS_LESD5D5.0CT1G	D3, D4, D5
4	100nF	C_0201_0603Metric	C1, C2, C3, C4
2	5.1K	R_0201_0603Metric	R1, R2
1	10K	R_0201_0603Metric	R3
4	1K	R_0201_0603Metric	R4, R5, R6, R7

Usb to uart converter design files

The KiCad project lives in the ajkumar-1907/power-converter-lib repository on GitHub; these links point at the commit this page was built from.

Usb to uart converter: common questions

How big is the Usb to uart converter PCB?

The Usb to uart converter measures 31 × 15 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Usb to uart converter?

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

Where can I download the Usb to uart converter design files?

From the ajkumar-1907/power-converter-lib 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 to uart converter design in my own project?

Yes, under the terms of its MIT license, which ajkumar-1907 chose for the repository.

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