Transforming Drum MIDI Signals Using Multiple Solenoids
The Robotic Tongue Drum: A Modern Spin on an Analog Instrument
In the realm of electronic contraption control, drums, particularly the challenging yet loud ones for humans, are a prime candidate. This notion is precisely what [Jeremy Cook] has executed in his latest project, transforming a tongue drum into a robotically controlled instrument using an Arduino Opta [2]. The inspiration for this unique drum controller was drawn from the ring-shaped arrangement of the iconic Cray 2 supercomputer.
The core of this controller is a laser-cut MDF frame, taking on a "C" shape, mirroring the Cray 2's form. This versatile frame encases the tongue drum and can expand or contract slightly as needed, ensuring a snug fit. The frame is graced with eight friction arms, commonly used for camera mounting, which hold solenoid strikers precariously poised above the drum's distinctive tongues.
The solenoids, like stealthy powerhouses, are brought to life by the Arduino Opta, utilizing silent solid-state relays (SSRs) to amplify their power. These SSRs help minimize noise compared to traditional mechanical relays, as [Jeremy] himself learned from an earlier experiment [3]. The Opta is enabled to accept MIDI input, which comes courtesy of two MIDI controllers that we've seen [Jeremy] build [1].
Tailored for a project like this, you'd need a MIDI controller, and [Jeremy] has previously demonstrated his skills by converting a kalimba into one [1]. While drum machines featuring mechanical elements aren't unheard of, electronic implementations are more common.
Notably, the Cray 2-inspired design extends beyond visual appeal. Its flexibility allows easy adjustment of solenoid positions to accommodate different tongues on the drum or even other percussion instruments. The SSRs reduce mechanical noise and increase the solenoid actuation's reliability and responsiveness. Interestingly, [Jeremy] opted to cover some solenoid tips with plastic caps for a softer strike, while others remained bare for an auditory contrast.
Ultimately, [Jeremy]'s project offers a fresh take on a traditional tongue drum, merging historical design elements with modern electronics to create a performance-ready, MIDI-controllable instrument [4][5].
This Arduino Opta-controlled tongue drum project by Jeremy Cook utilizes modern technology to transform the traditional instrument, making it a unique addition to gadgets that blur the line between analog and digital. Furthermore, the controller's sleek design, inspired by the Cray 2 supercomputer, is not just visually appealing but also flexible, allowing for easy adjustments to accommodate various percussion instruments, showcasing the fusion of old and new in the realm of technology.
