cross-posted from: https://discuss.tchncs.de/post/26741305

DeltaLima has developed a Grow Controller and firmware with WebUI and published it under the MIT license.

Features

• Gather Values from sensors
  • Temperature
  • Humidity
  • Soilmoisture
• Time based (ntp) Light control
  • Smooth Fade in and fade out configurable
• Control of two Fans
  • FAN1 is controlled by PWM supply Voltage
  • FAN2 is controlled by PWM 4 Pin Fan header
• Simple watering control
  • 3 modes for water plan
    • By soilmoisture value
    • by time (every n days, different interval for vegetation and bloom phase)
    • both combined
• Define the different phases of your grow
  • Set amount of days for vegetation and bloom phase.
  • After bloom phase CanGrow enters harvest mode by its own, which means the light and watering system gets disabled
• Maintenance Mode
  • When using LED PWM, you can activate Maintenance Mode, which dimms the light. (at night it will turn on when enabling maintenance mode)
• ESP32Cam integration on the Dashboard
• Support for SSD1306 128x64 I2C OLED display
  • rotates through three different screens
• Get measured values as json
  • GET /api/sensors

Supported Sensors

• Analog capacitive soilmoisture
• I2C Chirp (https://wemakethings.net/chirp/)
  • Soilmoisture
  • Temperature
• I2C BME280
  • Temperature
  • Humidity
• I2C SHT31
  • Temperature
  • Humidity
• Analog water level indicator
  • Builtin on CanGrow PCB
  • simple voltage divider, check out https://deltalima.org/blog/index.ph...e-step-water-level-indicator-for-arduino-esp/