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Water Level Control Β· ESP32

Know your tank level – right on your iPhone.

Water Level Control watches your tank, pool or aquarium. Two wire pairs hang in the water at the levels you choose. When the water reaches a pair, its switch turns on in Apple Home – and in Google Home if you want.

Board: ESP32 DOIT DevKit2 level switches10 creditsFree demo
Open the ESP32 flasher β†—Maker Credits

Try it free first. Water Level Control starts in demo mode by itself after setup – usually for 10 to 20 on/off changes, depending on the device. Like it? Then buy Maker Credits.

High Β· off Low Β· on switch 2stop the pumpswitch 1start filling

What it does

Use it to get a notification, or to start and stop your pump automatically:

  • Low level (switch 1 turns off) β†’ start filling.
  • High level (switch 2 turns on) β†’ stop the pump, no overflow.

No hardware is shipped. You buy the board in your own country, install our free firmware from Chrome or Edge, and switch it on with Maker Credits.

Wiring – 3 pins, no resistor

ESP32 D32 D27 GND Switch 1 Β· low levelGPIO 32 + GND Switch 2 Β· high levelGPIO 27 + GND 4-core cable Β· no resistor Β· a switch turns on when its wire ends touch water
  • Cut each pair at the height you want in the tank – for example low and high.
  • Tie a 50–100 g weight to the cable so it does not float.
  • Test with a glass of water before the cable goes into the tank.

Hardware

What you need

ESP32 DOIT DevKitESP32 DOIT DevKitThe only supported board. 30 or 36 pins both work. It must have an ESP32-WROOM-32 (or -32D) module with the built-in antenna.
A 4-wire cableA telephone cable works. Make it as long as you need to reach the bottom of your tank. Its 4 wires make the two sensor pairs.
5 V1 APowerA USB cable on a 5 V phone charger, or a 5 V 1 A adapter. Use at least 1 A – the board stays on all the time.
  • That is all – no box or other parts are needed.
  • 2.4 GHz Wi-Fi, the Home app, and an Apple TV or HomePod as home hub.
  • Optional: an Android phone with Google Home.
  • 10 Maker Credits.

Setup

Set it up in 4 steps

  1. Install the firmware. Plug the board into your computer and open the ESP32 flasher in Chrome or Edge. Click Connect, then Install.
  2. Connect it to Wi-Fi. The board makes a Wi-Fi network called HomeHome-XXXXXX (password homehome). Join it from your phone. Choose the device type Water Leveling System, type your Gmail address, then your home Wi-Fi and its password. No setup page? Unplug the board, plug it in again and stand 1–2 m from it.
  3. Add it to Apple Home. Open the Home app, tap + and enter 111-88-111. Pick a room and a name – two switches appear.
  4. Make an automation. For example: when switch 2 turns on, turn off the pump. You get a notification too.

Google Home (optional)

Tap + β€Ί Set up device β€Ί Works with Google β€Ί +HomeHome and log in with the same Gmail address. Then email your Gmail address and device ID (XXXXXX) to info@homehome.app so we can activate it.

Settings and updates

Open http://hh-xxxxxx.local or the device's IP address in a browser – find the IP by long-pressing the tile in the Home app. Change settings and install updates there. Local mode keeps it working without internet (Apple Home only).

Free demo: after setup Water Level Control runs in demo mode by itself, so you can test it before you buy. The demo usually ends after 10 to 20 on/off changes. When you have bought Maker Credits and we have added them to your Gmail account, restart the device and it keeps working.

Activate: Water Level Control uses 10 Maker Credits – USD 5.00 a month. Write your Gmail address in the order note (or email info@homehome.app); we add the credits. See your devices at smart.homehome.app. How Maker Credits work β†’

Troubleshooting

Something not working?

It drops off Wi-Fi or will not connect
Give your 2.4 GHz and 5 GHz Wi-Fi different names (for example "MyHome" and "MyHome5"). On a mesh network, keep the device on the same access point.
Apple Home network tips
Keep the device and your Apple TV on the same network (for example 192.168.0.x) and use only one home hub.
No setup page after flashing
Unplug the board, plug it in again and stand 1–2 m from it with your phone.
How do I reset it?
Open the device page β€Ί Settings β€Ί Reset. Or power it on and off 4 times in a row: on 3–4 seconds, off 3–4 seconds.

Need help with your tank setup?

Send us a WhatsApp message. Email: info@homehome.app.

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