Entropy Reduction

Personal log of yet another digital native.

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Project maintained by andre-abadi Hosted on GitHub Pages — Theme by mattgraham

Purpose

• Synthetic rain sensor
• Make use of a buck converter for outboard power from irrigation system

Actions

• Identified that irrigation controller ran at 24V AC
• Used a low voltage AC-DC converted to get 5V DC
• ESP-01S Relay (with fix)
• Used surface ducting to get two sets of telephone wire from irrigation controller to outside ensuite
  • One for switching
  • One for power

Pictures

Code

switch:
  # actual GPIO0 switch
  - platform: gpio
    name: "Irrigtation Interrupt Switch"
    id: gpio0
    icon: "mdi:light-switch"
    restore_mode: ALWAYS_OFF
    pin:
      number: GPIO0

Observations

• Locating it above/near irrigation controller put it out of range
• Voltage from AC/DC converter was quite stable
• Lessons learned from garage controller paid off
  • Liberal hot glue
  • Status LED helps
• ESP-01S Wi-Fi range heavily dependant on height, likes to be high up where signal could possibly go over the walls