What if the LINKKI construction reflects your smile like a mirror?
In this project, we utilize copper tape as a basic EMG (Electromyography) sensor. This is achieved by placing strips of copper tape on your face, enabling your LINKKI construction to respond to your smile. The sensor identifies variations in electrical conductivity on your skin resulting from facial movements. We then program a micro:bit to control a servo in response to these changes, creating an engaging interaction that mimics your facial expressions.
Material
- Conductive Tape (Use foil or any conductive material.) - Alligator Clips x 2 (Add more based on the number of sensors.) - Jumper Cables (Female-Male) x 2 - Micro:bit x 1 - AAA batteriesX4 - Basic Kit x 1 - Motor Kit x 1
Construction & Assembly
Further reading
What is an EMG Sensor? An EMG (Electromyography) sensor is a device that detects tiny electrical signals generated when muscles contract or relax. When muscles move, small amounts of electricity flow through them, and the EMG sensor captures these changes to understand how the muscles are moving. In contrast, the conductive sensor we used as a substitute—copper tape—detects changes in electrical conductivity caused by skin contact rather than directly measuring muscle movement. Read more - Makecode official tutorial [EMG Sensor] - Micro:bit [Conductivity tester] - Mechanical Mirrors (1999 - Present) by Daniel Rozin are interactive installations where mirrors made of mechanical components that reflect the viewer's movements and expressions. Rozin’s works explore the interplay between the digital and physical world, similar to how LINKKI reflects facial expressions.
