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

• Self made sensor node
  • PIR
  • Temp/Humidity (SHT31)
  • Status LED
• Basis for automations

Reference

• ESP8266-D1mini-DHT22-HC-SR501
• SHT31
• SHT3X-D Temperature+Humidity Sensor
• Wemos D1 Mini

Actions

• Printed parts as listed
• Dupont cables to connect everything
• Hot glued everything in place
• Flashed Wemos D1 Mini

Pictures

Code

switch:
  # actual GPIO0 switch
  - platform: gpio
    id: d7
    name: "${friendly_name} LED"
    restore_mode: ALWAYS_ON
    pin:
      number: D7
    icon: 'mdi:led-variant-on'

sensor:
  - platform: uptime
    name: "${friendly_name} Uptime"
  - platform: wifi_signal
    name: "${friendly_name} Wi-Fi Signal"
    update_interval: 60s
    
  - platform: sht3xd
    temperature:
      name: "${friendly_name} Temperature"
      filters:
        - offset: -2.9
    humidity:
      name: "${friendly_name} Humidity"
      filters:
      - offset: 8.3

binary_sensor:
  - platform: gpio
    pin: D4
    name: "${friendly_name} Motion"
    device_class: motion
    filters:
      delayed_off: 10s

Observations

• Case over-engineered, more plastic than necessary
• 100% infill used more plastic than necessary
• Case was larger than necessary
• Case did not adapt well to SHT31
• Lid did not close nicely