# Single White P.K.E. Meter ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** wave20 - **Created:** 6/13/2025 - **Last Updated:** 6/14/2025 - **Visibility:** Public ## Key Components ### U1 — [Nodemcu-12E ESP8266](https://www.flux.ai/jharwinbarrozo/nodemcu-12e-esp8266.md) - Datasheet URL: https://components101.com/development-boards/nodemcu-esp8266-pinout-features-and-datasheet - Manufacturer Part Number: Nodemcu-12E ESP8266 - Part Type: Microcontroller **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] ### U2 — [DHT22](https://www.flux.ai/vasy_skral/dht22.md) - Manufacturer Part Number: DHT22 - Part Type: Sensor - Symbol Style: Parametric - Manufacturer Name: Asair - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: Module - Datasheet URL: https://cdn-shop.adafruit.com/datasheets/Digital+humidity+and+temperature+sensor+AM2302.pdf **Pins:** - DATA [pin 2] - GND [pin 4] - NULL [pin 3] - VDD [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/wave20/single-white-ppkpep-meter](https://www.flux.ai/wave20/single-white-ppkpep-meter).* --- *Generated from [https://www.flux.ai/wave20/single-white-ppkpep-meter](https://www.flux.ai/wave20/single-white-ppkpep-meter)*