# ESP32 Water meter ## Description ESP32 Water Meter is a board designed to accurately measure water usage using an ESP32 microcontroller. It integrates built-in Wi-Fi, Bluetooth, and BLE for seamless data transmission and remote monitoring. The design incorporates essential components such as a linear voltage regulator, USB-C connector for power and programming, fuse, and TVS diode for circuit protection. This robust solution offers reliable power management and sensor integration, making it ideal for IoT applications in water metering and resource monitoring. #ESP32WaterMeter #IoT #WaterMeter #ESP32 #DataTransmission #PowerManagement #ElectronicsDesign #PCBDesign ## Project Details - **Owner:** natarius - **Created:** 5/17/2025 - **Last Updated:** 5/21/2025 - **Visibility:** Public ## Key Components ### F1 — [Fuse](https://www.flux.ai/jharwinbarrozo/fuse~801.md) - Part Type: Protection - Description: 500 mA resettable PTC fuse - Current Rating: 0.5A **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [USB-C 2.0 Receptacle](https://www.flux.ai/corynrobinson/usb-c-20-receptacle~cf.md) - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 - Manufacturer Part Number: USB4105-GF-A - Part Type: USB C - Manufacturer Name: GTC - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf **Pins:** - CC1 [pin 6] - CC2 [pin 12] - D- [pin 7] - D- [pin 9] - D+ [pin 8] - D+ [pin 10] - GND [pin 15] - GND [pin 16] - GND [pin 2] - GND [pin 1] - SBU1 [pin 11] - SBU2 [pin 5] - VBUS [pin 13] - VBUS [pin 3] - VBUS [pin 4] - VBUS [pin 14] ### TVS1 — [WE-TVS-82400102](https://www.flux.ai/vasy_skral/we-tvs-82400102~xt.md) - Part Type: Protection - Datasheet URL: https://katalog.we-online.de/pbs/datasheet/82400102.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Würth Elektronik - Manufacturer Part Number: 82400102 **Pins:** - GND [pin 2] - IO1 [pin 6] - IO1 [pin 1] - IO2 [pin 4] - IO2 [pin 3] - VDD [pin 5] ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-WROOM-32D - Part Type: Microcontroller - 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 15] - GND [pin 38] - 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] ### U2 — [MCP1700-3302E/TO](https://www.flux.ai/adrian95/mcp1700-3302eto~svz.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP1700-Data-Sheet-20001826F.pdf - Manufacturer Name: Microchip - Manufacturer Part Number: MCP1700-3302E/TO - Part Type: Integrated Circuit **Pins:** - GND [pin 1] - VI [pin 2] - VO [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/natarius/esp32-water-meter~g2](https://www.flux.ai/natarius/esp32-water-meter~g2).* --- *Generated from [https://www.flux.ai/natarius/esp32-water-meter~g2](https://www.flux.ai/natarius/esp32-water-meter~g2)*