#ConnectedChristmas2020

#ConnectedChristmas2020 is an art project whose goal is to help people celebrating Christmas connect to each other with the help of IoT technology.

This initiative is free to use and the server will be operated till 15th, January 2021.

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RFID Gate Control with MQTT connectivity to Home Automation HUBs – 2nd part: HUB side SW and Final Product

In the previous blog post I described the device that can be installed at the gate to enable remote operation of the lock and an RFID reader feature.

In this post I am talking about the HUB side software (NodeRED and Home Assistant) and show the final PCB.

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RFID Gate Control with MQTT connectivity to Home Automation HUBs

This project started as I was looking for a cheap device that can:

  • Operate directly from 230V
  • Control devices via relays (for example welcome lights or gate opener coils)
  • Read RFID Tags
  • Connect to a Home Automation HUB in a wireless way
  • Accept numerous digital inputs (for example doorbell button)
  • Operate over MQTT

As a result of not finding any suitable device I decided to design my own one.

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Laser communication between ESP8266 devices

Using ESP8266 / Wemos devices to send data over a laser beam

Using an ESP8266 device enables to you communicate via a variety of interfaces: WiFi, Serial, SPI, etc.. Why would you want to use a laser beam to communicate between devices? Well yes, this is a pointless project but we can learn a lot!

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