Pimp the Potentiometer
Upir has introduced a clever and visually appealing solution for controlling multiple LEDs based on input voltage, showcased in a ring light configuration. While individually lighting up LEDs with an Arduino is a common task, handling an array of LEDs proportional to input voltage adds a layer of complexity. The ring light, equipped with 31 LEDs, ingeniously uses only 12 pins, employing multiplexing to efficiently manage the array. Available in pairs for approximately $20, these modules offer an affordable way to enhance projects requiring a stylish and functional knob or visual element.
Multiplexing enables the control of multiple LEDs with fewer pins, optimizing the configuration of the ring light. Despite the cost of around $20 per pair, these modules offer versatility for various applications beyond just illuminating a potentiometer. The functionality extends to tracking a pot or rotary encoder, displaying microphone levels, or serving as expressive robot eyes. Upir’s creation demonstrates that the beauty of this hack lies not just in the technology but also in the logistics of arranging LEDs in an attractive circle, opening up possibilities for creative and visually striking projects.
Whether used for practical purposes or aesthetic enhancements, these LED modules present an intriguing solution for hobbyists and makers seeking a visually compelling way to interact with and display data.
Read more: Pimp the Potentiometer
