Interactive artist and sound designer Josh Wilkinson’s project Harp of the City is an installation made up of fourteen carved wooden harps with playable LED-illuminated strings.

As Josh explains in his post to our forum, each harp is powered by a Teensy 3.6 which generates a PWM signal in keeping with the amplitude of the person’s touch. This is used to increase the brightness of the LEDs behind each string while at the same time triggering polyphonic sound samples via the Teensy audio library. The installation was built for the Vivid festival in Sydney Australia which was hosted in 2019. You can explore more of Wilkinson’s sound and interactive installation work on his website.