2 layers37.5 × 20.5 mm
2 layers25.6 × 20.8 mm
Uart boot esp32
Using1200/esp32_wroom32eesp32 wroom32e pcb and usb bootloader pcb
- Size
- 25.6 × 20.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 32
- Pads
- 89
- Tracks, vias
- 146, 16
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Jul 2026
- Updated
- 16 Jul 2026
Overview
Uart boot esp32 is an open-source printed circuit board by Using1200, from the Using1200/esp32_wroom32e repository on GitHub. It is a 2-layer board of 25.6 × 20.8 mm with 15 parts on 32 nets, routed with 146 tracks and 16 vias.
It is built around the CP2102N-A02-GQFN24 and MMBT3904. Its parts include 6 resistors, 2 capacitors, 2 transistors, 2 connectors and 2 switches. It belongs with the interfaces and adapters boards and the ESP32 boards of this library.
Main components
2
CP2102N-A02-GQFN24
QFN-24-EP(4x4)-40℃~+85℃@(Ta) 1.3uA 13.7mA 3V~3.6V USB 2.0 USB to UART QFN-24-EP(4x4) USB Converters ROHSSilicon LabsUSB Converters
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100R | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 5.1K | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | CP2102N-A02-GQFN24 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U3 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | boot_btn | mes_boutons:SW_TS-1187A-B-A-B | S2 |
| 1 | connecteur | Connector_FFC-FPC:Hirose_FH12-6S-0.5SH_1x06-1MP_P0.50mm_Horizontal | J2 |
| 1 | reset_btn | mes_boutons:SW_TS-1187A-B-A-B | S1 |
Questions
How big is the Uart boot esp32 PCB?
It measures 25.6 × 20.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Uart boot esp32 use?
15 parts, built around the CP2102N-A02-GQFN24 and MMBT3904. 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 Uart boot esp32 KiCad files?
From the Using1200/esp32_wroom32e repository on GitHub, at the commit this page was made from: the board is uart_boot_esp32/uart_boot_esp32/uart_boot_esp32.kicad_pcb and its schematic esp32_wroom32e/esp32_wroom32e.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Uart boot esp32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Using1200 before reusing the design.
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