smart-intercom

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• Description: Remotely open an apartment intercom (Cyfral, Visit or similar)

Features

• When the device is inactive or turned off, it does not interfere with the operation of the intercom
• Can be integrated with various types of smart home systems
• Integrated with Samsung Smartthings

Required Electronic Components

• WeMos D1 Mini ($2.03). AliExpress
• 1 channel relay module Delay Disconnection Triggers Delayed Cycle Timing Circuit Switch XY-J02 (2.32$). AliExpress
• KY-019 KY 019 5V One 1 Channel Relay Module Board Shield (1.00$). AliExpress
• micro-usb cable(2.00$)

Total Price

7.35$

Connection diagram

XY-J02 settings

• Operating Mode: P.2
• OP: 2 sec
• CL: 4 sec

Wemos D1 mini firmware

• Download firmware from https://github.com/vzakharchenko/smart-intercom/releases

sudo apt-get install -y esptool
esptool --port /dev/ttyUSB0 write_flash --flash_size=detect -fm dout 0x0 intercom.ino.d1_mini.bin

First time configuration

• Connect to WiFi network "IntercomAP" and setup connection to your WiFi network

Application configuration

• Gpio number - the gpio number that connects to the relay signal
• Gpio Level - relay signal level: HIGH/LOW
• Timeout seconds - how many time (in second) wait for the intercom call

Rest Api

activate relay and wait for someone to call the intercom, then open the door

• endpoint

http://<DEVICE_IP>/open

Smartthings Integration

Smartthings Integration