# Automatic door knob ## 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:** darksun - **Created:** 3/11/2025 - **Last Updated:** 3/11/2025 - **Visibility:** Public ## Key Components ### U1 — [ESP8266EX](https://www.flux.ai/jharwinbarrozo/esp8266ex~xk.md) - Package or Case Code: QFN50P500X500X80-33N - Manufacturer Part Number: ESP8266EX - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/0a-esp8266ex_datasheet_en.pdf - Part Type: Microcontroller **Pins:** - ~{EXT_RSTB} [pin 32] - CHIP_EN [pin 7] - GND [pin 33] - GPIO0 [pin 15] - GPIO2 [pin 14] - GPIO4 [pin 16] - GPIO5 [pin 24] - LNA [pin 2] - MTCK [pin 12] - MTDI [pin 10] - MTDO [pin 13] - MTMS [pin 9] - P11 [pin 1] - P16 [pin 4] - P3 [pin 11] - RES12K [pin 31] - SDIO_CLK [pin 21] - SDIO_CMD [pin 20] - SDIO_DATA_0 [pin 22] - SDIO_DATA_1 [pin 23] - SDIO_DATA_2 [pin 18] - SDIO_DATA_3 [pin 19] - TOUT [pin 6] - U0RXD [pin 25] - U0TXD [pin 26] - VDD_RTC [pin 5] - VDD3P3 [pin 3] - VDDA [pin 30] - VDDD [pin 29] - VDDPST [pin 17] - XPD_DCDC [pin 8] - XTAL_IN [pin 28] - XTAL_OUT [pin 27] ### U2 — [Nodemcu-12E ESP8266](https://www.flux.ai/jharwinbarrozo/nodemcu-12e-esp8266~5t.md) - Part Type: Microcontroller - Datasheet URL: https://components101.com/development-boards/nodemcu-esp8266-pinout-features-and-datasheet - Manufacturer Part Number: Nodemcu-12E ESP8266 **Pins:** - 3V3 [pin 25] - 3V3 [pin 11] - 3V3 [pin 16] - A0 [pin 1] - CMD GPIO11 [pin 7] - D0 GPIO16 [pin 30] - D1 GPIO5 SCL [pin 29] - D2 GPIO4 SDA [pin 28] - D3 GPIO0 [pin 27] - D4 GPIO2 [pin 26] - D5 GPIO14 [pin 23] - D6 GPIO12 [pin 22] - D7 GPIO13 [pin 21] - D8 GPIO15 [pin 20] - EN [pin 12] - GND [pin 24] - GND [pin 10] - GND [pin 14] - GND [pin 17] - RST [pin 13] - RSV1 [pin 2] - RSV2 [pin 3] - RX GPIO3 [pin 19] - SCLK GPIO6 [pin 9] - SD0 GPIO7 MISO [pin 8] - SD1 GPIO8 MOSI [pin 6] - SD2 GPIO10 [pin 4] - SD2 GPIO9 [pin 5] - TX GPIO1 [pin 18] - VIN [pin 15] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/darksun/automatic-door-knob~3q](https://www.flux.ai/darksun/automatic-door-knob~3q).* --- *Generated from [https://www.flux.ai/darksun/automatic-door-knob~3q](https://www.flux.ai/darksun/automatic-door-knob~3q)*