# ESP32 Dual Ultrasonic Water Level Monitoring System ## Description This project is designed to measure water level of two tanks using ultrasonic sensors interfaced with the ESP32 microcontroller. The design leverages the processing power and wireless connectivity of the ESP32 to accurately monitor water levels and support automated water management processes. Key components include two ultrasonic sensors for precise distance measurement, robust voltage regulation using an LM2596 buck converter, and reliable power management circuits. Its modular design approach facilitates easy expansion and integration with other systems, making it an ideal solution for both DIY enthusiasts and professionals in automated fluid control and IoT applications. Firmware: https://github.com/jharwinbarrozo/ESP32-Dual-Ultrasonic-Water-Level-Monitoring-System #ESP32 #UltrasonicSensor #WaterLevelSensor #LM2596 #VoltageRegulator #ModularDesign #IoT #DIYProjects #ElectronicsDesign #automation ## Project Details - **Owner:** jharwinbarrozo - **Created:** 3/24/2025 - **Last Updated:** 3/30/2026 - **Visibility:** Public - **Firmware:** https://github.com/jharwinbarrozo/ESP32-Dual-Ultrasonic-Water-Level-Monitoring-System - **Software:** Arduino - **Stars:** 6 - **Forks:** 15 - **Copies:** 5 ## Key Components ### D5 — [SS34](https://www.flux.ai/lcsc/ss34~6q67.md) - Reverse Voltage: 40V - JLCPCB Part Class: Extended Part - LCSC Part Number: C2758511 - Diode Type: Schottky - Forward Voltage: 0.3V to 0.45V - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Part Number: SS34 - Manufacturer Name: UMW(友台半导体) - Package or Case Code: SMB_L4.3-W3.6-LS5.4-RD **Pins:** - A [pin 2] - K [pin 1] ### EN1 — [PTS636 SM43J SMTR LFS](https://www.flux.ai/jharwinbarrozo/pts636-sm43j-smtr-lfs~6r0.md) - Datasheet URL: https://www.ckswitches.com/media/2779/pts636.pdf - Manufacturer Part Number: PTS636 SM43J SMTR LFS - Part Type: Switch - Manufacturer Name: C&K **Pins:** - P1 [pin 1] - P2 [pin 2] ### IO0 — [PTS636 SM43J SMTR LFS](https://www.flux.ai/jharwinbarrozo/pts636-sm43j-smtr-lfs~6r0.md) - Manufacturer Name: C&K - Part Type: Switch - Manufacturer Part Number: PTS636 SM43J SMTR LFS - Datasheet URL: https://www.ckswitches.com/media/2779/pts636.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [Pin Header 02x10 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J11 — [Pin Socket 01x06 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x06-254mm-vertical~yiu.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### J2 — [Pin Header 02x10 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J3 — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x06-254mm-vertical~jyw.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### J4 — [282837-3](https://www.flux.ai/vasy_skral/282837-3~ndb.md) - Part Type: Connector - Manufacturer Part Number: 282837-3 - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English - Manufacturer Name: TE Connectivity AMP Connectors **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### J5 — [Pin Socket 01x04 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x04-254mm-vertical~kks.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### J6 — [Pin Socket 01x04 2.54mm Vertical](https://www.flux.ai/adrian95/pin-socket-01x04-254mm-vertical~kks.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] ### LED1 — [LED 0603 (1608 Metric)](https://www.flux.ai/jharwinbarrozo/led-0603-1608-metric~yk.md) - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [LED 0603 (1608 Metric)](https://www.flux.ai/jharwinbarrozo/led-0603-1608-metric~yk.md) - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED3 — [LED 0603 (1608 Metric)](https://www.flux.ai/jharwinbarrozo/led-0603-1608-metric~yk.md) - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED4 — [LED 0603 (1608 Metric)](https://www.flux.ai/jharwinbarrozo/led-0603-1608-metric~yk.md) - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Environment: Industrial (-40 °C to 85 °C, EMI class) - Manufacturer Part Number: ESP32-WROOM-32D - Copper Planes: Layer 2: GND, Layer 3: 5V - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - Part Type: Microcontroller - License: https://creativecommons.org/licenses/by/4.0/ - Stackup: Standard 4 Layer - Manufacturer Name: Espressif Systems **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] ### U12 — [AMS1117-3.3](https://www.flux.ai/vasy_skral/ams1117-33~34.md) - Datasheet URL: http://www.advanced-monolithic.com/pdf/ds1117.pdf - Manufacturer Name: AMS - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: Parametric - Manufacturer Part Number: AMS1117-3.3 **Pins:** - GND [pin 1] - TAB(VOUT) [pin 4] - VIN [pin 3] - VOUT [pin 2] ### U2 — [LM2596S-5.0/NOPB](https://www.flux.ai/adrian95/lm2596s-5p0nopb~ji8.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/lm2596.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LM2596S-5.0/NOPB - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments **Pins:** - ~ON~/OFF [pin 5] - FEEDBACK [pin 4] - GND_TAB [pin 6] - GROUND [pin 3] - OUTPUT [pin 2] - VIN [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jharwinbarrozo/esp32-dual-ultrasonic-water-level-monitoring-system~i5x](https://www.flux.ai/jharwinbarrozo/esp32-dual-ultrasonic-water-level-monitoring-system~i5x).* --- *Generated from [https://www.flux.ai/jharwinbarrozo/esp32-dual-ultrasonic-water-level-monitoring-system~i5x](https://www.flux.ai/jharwinbarrozo/esp32-dual-ultrasonic-water-level-monitoring-system~i5x)*