Introduction:

Smart irrigation controllers are overpriced and lack customizability so I set out to develop a simple and easy to use solution that is also robust and reliable.

Components used:

• ESP32 dev board - https://www.amazon.com/gp/product/B0C7C2HQ7P/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
• 16 channel relay board - https://www.amazon.com/gp/product/B07Y2X4F77/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 (PLEASE NOTE: polarity has been changed in the latest version of code for the new PCB design. No longer compatible with this relay board)
• Step Down Buck converter - https://www.amazon.com/gp/product/B08B3T9DX4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
• Amazon Fire HD 8" Tablet - https://www.amazon.com/gp/product/B07952VWF2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
• 3d printed container
• 24v transformer

Web UI:

Installation:

FOR LINUX:

First install the micropython environment on your ESP32. Here's the official documentation: https://docs.micropython.org/en/latest/esp32/tutorial/intro.html

For the condensed version:

• Download micropython here: https://micropython.org/resources/firmware/ESP32_GENERIC-20240222-v1.22.2.bin
• Run the following command in the ubuntu terminal:

pip install esptool

• From the folder where the micropython file is located, run the following commands:

esptool.py --chip esp32 --port /dev/ttyUSB0 erase_flash
esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 ESP32_GENERIC-20240222-v1.22.2.bin

Once micropython has been successfully installed on the board, download the files in the repository navigate to it's folder.

Once this is complete, save the file and run the following commands:

pip install adafruit-ampy
ampy --port /dev/ttyUSB0 put index.html
ampy --port /dev/ttyUSB0 put scheduler.html
ampy --port /dev/ttyUSB0 put logs.html
ampy --port /dev/ttyUSB0 put settings.html
ampy --port /dev/ttyUSB0  put microdot.py
ampy --port /dev/ttyUSB0  put microdot_asyncio.py
ampy --port /dev/ttyUSB0  put controller.py /main.py

Reboot and connect to the "intellidwellSC" SSID with password "Sprinkler12345" from any device. In a browser type in 192.168.4.1 to access the sprinkler controller UI.

To connect to a Wifi Network navigate to "Settings" on the main page and enter in your WiFi credentials. You can also input your MQTT credentials here if you wish. When the device is rebooted, you can access the UI from the hostname http://sprinklers.local on your network, or from your MQTT integration system of choice.

NOTE: If the network is unavailable, the ESP32 will first try to connect without the MQTT integration. If the network is still causing errors, the ESP32 will resume AP mode to allow for control of the sprinkler system.

Enclosure:

Main Box: https://a360.co/3JPQwDQ

Tablet Tray: https://a360.co/3wzbLN

Tablet Cover: https://a360.co/4asd20F

Assembly:

Option 1 (PLEASE NOTE: polarity has been changed in the latest version of code for the new PCB design. No longer compatible with this relay board)

Option 2 (Aligns with current code, preferred)

Custom PCB:

• The PCB haas been tested and is fully functional. Feel free to utilize these designs! See the "PCB files" folder if interested.

*PLEASE NOTE* enclosure untested. Will print soon.

Support This Project

If you like this project, consider supporting it with a donation!