# Arduino Uno R3 Shield Template ## Description Template for Arduino Uno R3 Shield. Include an official pinout so you will always know Arduino names, the alternative roles of pins, which one is SDA, or SCL, etc. On PCB you can find the 3D model of the Arduino Uno R3 itself along with the board outline on the silkscreen. #Arduino #Uno #Shield #Template #project-template #project ## Project Details - **Owner:** dariojrp2 - **Created:** 2/1/2025 - **Last Updated:** 2/1/2025 - **Visibility:** Public ## Key Components ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Manufacturer Part Number: ESP32-WROOM-32D - Manufacturer Name: Espressif Systems - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Microcontroller **Pins:** - 3.3V [pin 2] - AGND [pin 39] - CLK [pin 20] - CMD [pin 19] - EN [pin 3] - GND [pin 38] - GND [pin 15] - GND [pin 1] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 32] - RXD0 [pin 34] - SD0 [pin 21] - SD1 [pin 22] - SD2 [pin 17] - SD3 [pin 18] - TXD0 [pin 35] - VN [pin 5] - VP [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/dariojrp2/arduino-uno-r3-shield-template~bj](https://www.flux.ai/dariojrp2/arduino-uno-r3-shield-template~bj).* --- *Generated from [https://www.flux.ai/dariojrp2/arduino-uno-r3-shield-template~bj](https://www.flux.ai/dariojrp2/arduino-uno-r3-shield-template~bj)*