Smart intercom based on ESP8266 (Urmet 4+n)

ESPHome version and Home Assistant

Buttons and Leds

• Red LED is on
  • MUTE mode
• Blue LED blinks
  • Connecting to WiFi or Home Assistant
• Green LED blinks
  • "Automatically open once" mode
• Green LED is on
  • "Automatically open permanent" mode
• Red and Green LED blinks
  • "Automatically open once" without ring (mute mode)
• Red and Green LED is on
  • "Automatically open permanent" without ring (mute mode)
• Short button click
  • Enables automatically open/reject door mode (once by first click, permanent by second click, reject by third click...)
• Double button clik
  • Disable mute
• Long button click
  • Disables automatically open/reject door mode and mute mode

Scheme

PCB

Home Assistant

Mushroom Card (Example)

Automation Examples (Telegram, Active notification, Send images from camera, Extended ring bell...)

Final (Additional button, LED, mute mode, ring volume setting...)

Urmet (4+n) terminal

URMET 4+N:

• 9 - Lock (open door)
• 10
• 6 - Common (gnd)
• 2 - Speech Out (MIC)
• CA - Call (ring)
• 1 - Speech In (speaker)

Inspitation and resources

• https://github.com/Anonym-tsk/smart-domofon