CoyuyoC it's an analog drone synth based on the legendary 555 chip. Two triangular oscillators (for more pleasure), promiscuously exciting each other. It has patcheable in-out connections, light sensor, nice wing potentiometer knobs and voltage control INput.
Analog drone patchable synth Coyuyo it's the name that takes the Quesada Gigas (Giant Cicada) here in the north of Argentina. The coyuyo, spreaded all over the American continent (from Texas to Santiago del Estero) makes a loud sound that sometimes makes it impossible to take a nap in the warm summer siestas.
The coyuyo has two resonant membranes which it uses to make the sound. Mimetically CoyuyoC it has two oscillators, one LFO and one VCO which can be controlled independently (by two nice wing-knobs) or it could be connected to each other through a mini patch bay. All connections could be by-passed through a light sensor. Working independently the oscillators go from beat to tones, getting interesting when the frequencies are near each other. You can connect the LFO to the VCO via light sensor with incredible modulation results. Moreover, you can connect the VCO to LFO to re-modulate the signal for hypnotical drone sounds. Patching correctly you can get an optical Theremin mode.
CoyuyoC has a voltage control INput that allows an external pulse to control the tempo. Its output could be mono or stereo.

Frequently Asked Questions
What inspired you to do this?
The Coyuyo beautiful and noisy Giant Cicada or Quesada Gigas, insect that disturb many siestas here in Tucumán, Argentina
How long did it take to make it?
3 month, I guess.
How long have you been doing things like this?
for 18 years, I think
How much did this cost to do?
I don't know exactly
Have you done other things like this?

Mateo Carabajal : Musician, maker, teacher, engineer.
The maker Mateo Carabajal
Electronic engineer, teacher and musician. He has worked with microcontrollers and free software and hardware platforms such as Arduino since 2008. Dedicated to teaching in the electronics area, he gave workshop classes throughout the country and abroad, focused on hardware hacking and homemade musical synthesizers. Performs exhibitions and performances of electronic art in different art galleries and museums in Argentina.
His work inspired the documentary Los Aparatos de Mateo (2011), directed by the Tucuman filmmaker José Villafañe and winner of a mention at the Cannes Film Festival 2012 (Court Métrage. Short Film Corner. Cannes Festival. France).
He is guitarist for the rock band Estación Experimental; It is part of the experimental pop musical project Natalia A. He is carrying out the didactic electronics venture Los Aparatos, and the educational makerspace "Academia Mundial de Hacedores". He was coordinator for Educational Robotics of the Ministry of Education of Tucumán, from 2015 to 2019. He participated in the National Audio-Experimentation Panorama of the Sound Art Center of the Ministry of Culture of the Nation, being a producer of the Tucumán episode.

Connect with Mateo Carabajal
How I can help you:
I make some electronic sound machines.
How you can help me:
Buying some electronic sound machines. Going to my gigs.