# Modern Tan P.K.E. Meter ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** sgfrol - **Created:** 7/15/2024 - **Last Updated:** 5/28/2025 - **Visibility:** Public ## Key Components ### PS1 — [LM2596 DC-DC buck converter](https://www.flux.ai/vasy_skral/lm2596-dc-dc-buck-converter.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit **Pins:** - IN - [pin 2] - IN + [pin 1] - OUT - [pin 3] - OUT + [pin 4] ### U1 — [XL4015](https://www.flux.ai/jecstronic/xl4015.md) - Datasheet URL: https://www.snapeda.com/parts/XL4015/XLSEMI/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: XLSEMI - Part Type: Converter - Manufacturer Part Number: XL4015 **Pins:** - FB [pin 2] - GND [pin 1] - SW [pin 3] - SW [pin 3.1] - VC [pin 4] - VIN [pin 5] ### U2 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d.md) - Part Type: Microcontroller - 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/ **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/sgfrol/modern-tan-ppkpep-meter](https://www.flux.ai/sgfrol/modern-tan-ppkpep-meter).* --- *Generated from [https://www.flux.ai/sgfrol/modern-tan-ppkpep-meter](https://www.flux.ai/sgfrol/modern-tan-ppkpep-meter)*