Project Overview and Features

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Here’s a clear overview of what this project is, what it does, and its main building blocks.
What it does
  • Purpose: Dual-tank water level monitor using two ultrasonic sensors and an ESP32. It can display/report levels and drive external loads via relay outputs for automation.
  • Power: Designed around a wide “7–30 V” input net that is stepped to 5 V and then to 3.3 V for the ESP32 and logic.
  • Interfaces: Two dedicated ultrasonic sensor ports, two I2C expansion sockets (e.g., for an OLED), a UART/programming header, and two full 2x10 headers that break out ESP32 IO.
Main components and functions

Table

Main components and functions
U1
U2 + power stage: L1, D5, bulk/decoupling caps (C5, C6, C9)
U12 + 3V3 decoupling (C1, C7, C8)
Dual ultrasonic sensor connector J11
I2C expansion sockets J5, J6
Power terminal J4
4x modular relays RL1, RL2, RL3, RL4
Per-relay status LEDs LED1, LED2, LED3, LED4 with series resistors R7, R8, R9, R10
Programming/UART header J3
Full IO breakout headers J1, J2
Tact switches EN, IO0 + pull parts R6, R5
How it works (signal mapping)
  • Ultrasonic ports (two independent channels)
    • Sensor 1: Trigger “SENSE_TRIGGER 1” -> U1 IO19; Echo “SENSE_ECHO 1” -> U1 IO5. Routed through J11.
    • Sensor 2: Trigger “SENSE_TRIGGER 2” -> U1 IO27; Echo “SENSE_ECHO 2” -> U1 IO13. Routed through J11.
    • Power to sensors from 5 V and GND on the same 6-pin socket.
  • I2C expansion
    • SDA -> U1 IO21; SCL -> U1 IO22 available on J5 and J6, with 5 V and GND.
  • Relays
    • RL1 IN -> U1 IO26; RL2 IN -> U1 IO25; RL3 IN -> U1 IO33; RL4 IN -> U1 IO32. All relays powered from 5 V, GND common.
    • Status LED cathodes tie to relay indicator nets; anodes go to 5 V through R7–R10.
  • UART/programming
    • J3: TXD0, RXD0, 5 V, GND, and IO0. R5 pulls IO0 up; the IO0 can force boot mode.
    • EN line pulled up by R6; the EN resets.
  • Power path
    • Input on “7–30 V” via J4 -> U2 buck -> 5 V net -> U12 -> 3V3 net.
    • Energy storage/decoupling at input/output: C5, C6, C9, C1, C7, C8; rectifier D5; inductor L1.
Coolest features
  • Dual ultrasonic channels with dedicated Trigger/Echo lines and power on a single 6-pin socket.
  • Four on-board, 5 V relay modules with per-channel status LEDs for immediate visual feedback.
  • Wide-input power design with on-board 5 V buck and 3.3 V LDO rails, so the system can be powered from a broad range (net labeled “7–30 V”).
  • Two I2C sockets for drop-in peripherals like an OLED or extra sensors.
  • Full ESP32 breakout via two 2x10 headers, plus a clean UART/programming header and boot/reset buttons.
  • Mounting holes (M3) for easy enclosure integration.
Current design health (automated checks)
  • Manufacturing: Many generics lack MPNs (e.g., resistors, capacitors, some connectors, inductor). This is flagged under “Manufacturer Part Number” and will need real parts assigned before ordering.
  • Layout: “Floating copper” and “Layers with Multiple Fills” errors, and “Overlapping Copper” warnings are present. These should be resolved before fabrication.
  • Missing-parts checks (e.g., decoupling/pull-ups) haven’t been run by the automated assistants, but the schematic already includes pull-ups for EN/IO0 and multiple decoupling capacitors.
If you want, I can help you: assign concrete MPNs to the generics, validate the ultrasonic header pinout against your sensors, and prepare the board for manufacture (resolve DRC errors, finalize footprints).
Clarify ultrasonic headers
Choose ultrasonic model
Resolve DRC copper issues
Assign real MPNs
Power-stage validation
53 days

Ready.

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  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
    jharwinbarrozo
    15.1k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
    jharwinbarrozo
    1.1M

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ESP32 Dual Ultrasonic Water Level Monitoring System ivyo

ESP32 Dual Ultrasonic Water Level Monitoring System ivyo
Description

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Last updated by adriangispert
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jharwinbarrozo/esp32-dual-ultrasonic-water-level-monitoring-system
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