Contactless Switch For 4 Load Switching

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Nevon Contactless Switch For 4 Load Switching Stm32


Contact switches are today the most common method used for switching off home appliances, lights, fans. Etc. But are they the most efficient way for load switching ? Well here are some disadvantages for traditional switches:

  • Toggle switches are based on physical press hence have a limited lifetime
  • One switch can operate only one load hence we need large switchboards
  • These switches are not contactless so prone to wear and tear

How about we design a switching system that overcomes all these issues with a more modern yet low cost system. We hereby design a single switch that can operate 4 loads and that too without the user ever needing to touch the switch.

The system is made using a STM32 controller that is used to operate an gesture based switch. It is also integrated with a sound sensor for even faster operation speed and ease of use.
The system is used to operate 4 loads at a time using single switch. The controller constantly monitors the gesture sensor for any human gestures. Hand gestures made within 5 – 10 centimeters proximity of the sensor are sensed by the system. As soon as a gesture is sensed the controller operates the relay board to switch On or OFF the respective load as per gesture. Also the user may just clap anywhere near the switch n order to switch ON or OFF all loads at a clap.

The system operates loads using relay board in following manner

  • Left Swipe >> Light 1 Switching
  • Right Swipe >> Light 2 Switching
  • Up Swipe >> Fan 1 Switching
  • Down Swipe >> Fan 2 Switching
  • Clap >> All Loads Switching Together

This allows for an ultra-modern yet space saving, futuristic switching system that may one day replace all traditional switches.

nevonproject electronics kits
nevonproject electronics kits
  • Components
  • STM 32 Controller
  • Gesture Sensor
  • Sound Sensor
  • Relay Module
  • 2 x Light Bubs
  • 2 x Mini Fans
  • Push Buttons
  • LED’s
  • PCB Board
  • Resistors
  • Capacitors
  • Transistors
  • Cables and Connectors

Block Diagram

Nevon Contactless Switch For 4 Load Switching Stm32