Smart Doorbell

Smart doorbell that can be implemented in any existing doorbell based upon a NodeMCU, a 3v3 Relay and Tasmota

Table of Contents

1. Materials needed
2. Connecting the hardware
3. Setting up the software
4. Add silent mode

Materials

The following components have been used

• 1 NodeMCU v3 ESP8266 chip: https://aliexpress.com/item/32665100123.html
• 1 3v3 Relay: https://aliexpress.com/item/1005001567474787.html
• 230v AC to 5v DC converter: https://aliexpress.com/item/4000606845997.html
• Dupont/Jumper cables: https://aliexpress.com/item/4000203371860.html
• Existing doorbell
• (Optional) 3D printed case: https://www.thingiverse.com/thing:5167974

Connecting the hardware

1. Connect the wires as follows:

Setting up the software

1. Download Tasmotizer: https://github.com/tasmota/tasmotizer
2. Connect the NodeMCU via the USB port
3. In Tamotizer, select Release and click Tasmotize
4. Look up an access point with the name tasmota_XXXXXX-####, connect and follow the instructions
5. Go with the browser to the IP-adress of your NodeMCU
6. Click Configuration
7. Click Configure Module
8. Set Module Type to Generic
9. Save and wait for the device to reboot
10. Repeat step 6 & 7
11. Configure the module as shown on the picture below

12. Save and wait for the device to reboot

Optional: add silent mode to doorbell

Optionally, it is possible by adding a 'silent mode' to your doorbell. You do this by updating the configuration add temporarily remove the relay from the configuration.

Home Assistant configuration (requires MQTT to be configured)

Switch:
- platform: mqtt
  name: "Deurbel stille modus"
  command_topic: "cmnd/doorbell/GPIO5" ## Set 'doorbell' to the topic name of your device
  state_topic: "stat/doorbell/RESULT" ## Set 'doorbell' to the topic name of your device 
  payload_on: "0"
  payload_off: "256"
  state_on: '{"GPIO0":{"0":"None"},"GPIO1":{"0":"None"},"GPIO2":{"0":"None"},"GPIO3":{"0":"None"},"GPIO4":{"0":"None"},"GPIO5":{"0":"None"},"GPIO9":{"0":"None"},"GPIO10":{"0":"None"},"GPIO12":{"0":"None"},"GPIO13":{"0":"None"},"GPIO14":{"160":"Switch1"},"GPIO15":{"0":"None"},"GPIO16":{"0":"None"},"GPIO17":{"0":"None"}}}'
  state_off: '{"GPIO0":{"0":"None"},"GPIO1":{"0":"None"},"GPIO2":{"0":"None"},"GPIO3":{"0":"None"},"GPIO4":{"0":"None"},"GPIO5":{"256":"Relay_i1"},"GPIO9":{"0":"None"},"GPIO10":{"0":"None"},"GPIO12":{"0":"None"},"GPIO13":{"0":"None"},"GPIO14":{"160":"Switch1"},"GPIO15":{"0":"None"},"GPIO16":{"0":"None"},"GPIO17":{"0":"None"}}}'