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Greenhouse with motorised roll-up side curtains
Greenhouse with motorised roll-up side curtainsCredit: @tomiyasu16 on X

A farmer's ESP32 greenhouse vent opener, controlled from LINE

Gadget, Medium

A Hokkaido farmer with no engineering background used Codex to motorise greenhouse side curtains. An ESP32 drives two 24V roll-up motors from LINE commands or from temperature readings.

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Tomiyasu used to crank the greenhouse side curtains by hand. Now two 24V DC roll-up motors do it, driven through a BTS7960 motor driver by one ESP32. A Cloudflare backend records commands sent in LINE, and the ESP32 polls it and runs the motors forward, in reverse, or stops them.

A SwitchBot thermometer and hygrometer triggers opening and closing at set temperatures, and LINE sends a message when a move finishes. A local switch still works for manual control. The first field test used a 20°C threshold, and the builder posted the progress as a series on X.

The builder notes that wiring, power capacity and stopping mechanisms have to be checked for your own motors and greenhouse, and that the system is still being tested in the field.

Interfaces

Ideas to try with it

Our ideas, not the builder's claims.

  1. Start with one motor and a manual switch before adding the cloud side
  2. Log every open and close with the temperature so next season's thresholds come from data
  3. Swap LINE for Telegram or Home Assistant if that's what you use
Source
@tomiyasu16 on X
Posted
2026-04-05
Builder
@tomiyasu16
Built with
ESP32

Links

Guides: Codex and ChatGPT hardware projects people actually built

What to build next

Builds that share a board, robot or agent with this one.