23 open source boards using the CP2102
Real designs built with the CP2102, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Ultra DB X51 v1
ExploreEmbedded
178 × 145 mm132 partsBSD-3-Clause70
ESP32ESP32BB
asukiaaa
43.2 × 61 mm27 parts2LNo license57
ESP32Iotuz esp32-hardware
CCHS-Melbourne
150 × 95 mm97 parts2LTAPR-OHL-1.035
ESP32Hornbill our
93 × 60 mm68 parts2LNo license27
Analog and ad9958
balmerdx
97.6 × 145.1 mm215 parts4LBSD-2-Clause26
ESP32PCBmain
MagnusLab
112 × 48.8 mm63 parts2LGPL-3.07
RP2040/RP2350Watchy hardware v2
xywatch
33.8 × 46 mm62 parts2LNo license7
ESP32Esp32stack
3.2 × 3.2 mm27 parts2LNo license7
ESP8266Esp8266 apa102 bulb
robertfoss
92.4 × 91.4 mm113 parts2LGPL-2.05
AVR/ArduinoVut arcar
wykys
60 × 36 mm53 parts2LMIT3
ESP32Co2-Sensor-Hardware
twam
45 × 65 mm69 parts2LNo license2
PTT-USB-Cable
UT8IFG
30 × 13.7 mm23 parts2LMIT2
OneMicro-Base-Board
180 × 135 mm143 parts2LNo license1
ESP32Multipurpose ESP32 Gamepad
pacman314159
136 × 95 mm131 parts4LNo license0
ESP32ScholDigi
Sheep26
66 × 49 mm65 parts2LNo license0
UsbUartBridge
mpek29
50.9 × 17.8 mm15 parts2LNo license0
Rot enc and power
70 × 50 mm17 parts2LBSD-2-Clause26
Usb to serial
30 × 20 mm9 partsNo license17
Usb to serial
AhmedElwakeel
30 × 20 mm9 partsNo license1
Usb to serial
30 × 20 mm9 partsNo license0
Usb to serial append
33.5 × 2.8 mm7 partsNo license17
Usb to serial append
33.5 × 2.8 mm7 partsNo license1
Usb to serial append
33.5 × 2.8 mm7 partsNo license0
The CP2102 in open source designs
The gallery holds 23 open source boards using the CP2102 from 19 GitHub repositories; a typical one measures about 50.9 × 48.8 mm and carries around 53 components.
88% are two-layer designs, the rest use four layers or more, and 35% carry an open source license.
The most starred is Ultra DB X51 v1 by ExploreEmbedded.
Parts used alongside the CP2102
Microcontrollers on boards using the CP2102
What boards using the CP2102 are built for
CP2102: common questions
Where can I find a CP2102 reference design?
Each of the 23 boards on this page is a real design using the CP2102. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the CP2102?
The ESP32-WROOM, NCP1117ST33T3G, USBLC6-2SC6, 24C16 and AMS1117-3.3 appear in the most repositories here.
Which microcontrollers do boards using the CP2102 use?
Most are built on ESP32 (8), AVR/Arduino (1), ESP8266 (1) and RP2040/RP2350 (1).
How big is a typical board using the CP2102?
The median is 50.9 × 48.8 mm, and 88% are two-layer designs.
What is the most popular open source board using the CP2102?
By GitHub stars, Ultra DB X51 v1 by ExploreEmbedded, with 70 stars.
Can I simulate one of these boards using the CP2102 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.