# RP2040 ESP32-S3 UART Bridge ## Description Placa hand-solderable con Raspberry Pi Pico RP2040 y módulo ESP32-S3, alimentada por USB-C y comunicación UART bidireccional a 3.3V. ## Project Details - **Owner:** stlmepxvh7 - **Created:** 6/10/2026 - **Last Updated:** 6/10/2026 - **Visibility:** Public ## Key Components ### J1 — [Connector 01x08 0.100](https://www.flux.ai/vasy_skral/connector-01x08-0100~q3l.md) - Part Type: Connector - Role: Expansion Header - Connector Pitch: 2.54mm - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] ### J2 — [USB-C 2.0 Receptacle](https://www.flux.ai/vasy_skral/usb-c-2p0-receptacle~1xw.md) - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf - Role: Power Conversion - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 - Part Type: USB C - Manufacturer Name: GTC - Role Details: USB-C 5V input and USB2 data connector - Manufacturer Part Number: USB4105-GF-A - Symbol Style: parametric-v1 **Pins:** - CC1 [pin 6] - CC2 [pin 12] - D- [pin 7] - D- [pin 9] - D+ [pin 10] - D+ [pin 8] - GND [pin 1] - GND [pin 16] - GND [pin 15] - GND [pin 2] - SBU1 [pin 11] - SBU2 [pin 5] - VBUS [pin 3] - VBUS [pin 14] - VBUS [pin 4] - VBUS [pin 13] ### U1 — [Raspberry Pi Pico](https://www.flux.ai/baronunread/raspberry-pi-pico~j7.md) - Part Type: Evaluation Boards - Datasheet URL: https://datasheets.raspberrypi.com/pico/pico-datasheet.pdf - Manufacturer Part Number: SC0915 - Manufacturer Name: Raspberry Pi - Role: RP2040 main controller **Pins:** - ~RUN [pin 30] - 3V3_EN [pin 37] - 3V3_OUT [pin 36] - ADC_VREF [pin 35] - AGND [pin 33] - GND [pin 13] - GND [pin D2] - GND [pin 23] - GND [pin 28] - GND [pin 18] - GND [pin 3] - GND [pin 38] - GND [pin 8] - GP0 [pin 1] - GP1 [pin 2] - GP10 [pin 14] - GP11 [pin 15] - GP12 [pin 16] - GP13 [pin 17] - GP14 [pin 19] - GP15 [pin 20] - GP16 [pin 21] - GP17 [pin 22] - GP18 [pin 24] - GP19 [pin 25] - GP2 [pin 4] - GP20 [pin 26] - GP21 [pin 27] - GP22 [pin 29] - GP26 [pin 31] - GP27 [pin 32] - GP28 [pin 34] - GP3 [pin 5] - GP4 [pin 6] - GP5 [pin 7] - GP6 [pin 9] - GP7 [pin 10] - GP8 [pin 11] - GP9 [pin 12] - SWCLK [pin D1] - SWDIO [pin D3] - VBUS [pin 40] - VSYS [pin 39] ### U2 — [ESP32-S3-WROOM-1](https://www.flux.ai/kicad-part-library/esp32-s3-wroom-1~6lv.md) - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf - Manufacturer Name: Texas Instruments Inc. - Role: Logic-level Shifting - Package or Case Code: ESP32-S3-WROOM-1 - Part Type: RF Module - Manufacturer Part Number: ESP32-S3-WROOM-1 - Role Details: 3.3V WiFi/BLE coprocessor linked to RP2040 over UART **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND [pin 1] - GND [pin 40] - GND [pin 41] - IO0 [pin 27] - IO1 [pin 39] - IO10 [pin 18] - IO11 [pin 19] - IO12 [pin 20] - IO13 [pin 21] - IO14 [pin 22] - IO15 [pin 8] - IO16 [pin 9] - IO17 [pin 10] - IO18 [pin 11] - IO19 [pin 13] - IO2 [pin 38] - IO20 [pin 14] - IO21 [pin 23] - IO3 [pin 15] - IO35 [pin 28] - IO36 [pin 29] - IO37 [pin 30] - IO38 [pin 31] - IO39 [pin 32] - IO4 [pin 4] - IO40 [pin 33] - IO41 [pin 34] - IO42 [pin 35] - IO45 [pin 26] - IO46 [pin 16] - IO47 [pin 24] - IO48 [pin 25] - IO5 [pin 5] - IO6 [pin 6] - IO7 [pin 7] - IO8 [pin 12] - IO9 [pin 17] - RXD0 [pin 36] - TXD0 [pin 37] ### U3 — [AP2112K-3.3TRG1](https://www.flux.ai/adrian95/ap2112k-33trg1~zlq.md) - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2112.pdf - Manufacturer Part Number: AP2112K-3.3TRG1 - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Role Details: 5V USB to 3.3V rail, ESP32 peak current budget about 500mA - Manufacturer Name: Diodes Incorporated - Role: Power Conversion - Part Type: Integrated Circuit **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/stlmepxvh7/rp2040-esp32-s3-uart-bridge~ji](https://www.flux.ai/stlmepxvh7/rp2040-esp32-s3-uart-bridge~ji).* --- *Generated from [https://www.flux.ai/stlmepxvh7/rp2040-esp32-s3-uart-bridge~ji](https://www.flux.ai/stlmepxvh7/rp2040-esp32-s3-uart-bridge~ji)*