HELIOS ONE SYNTH
An Easy To Build Mono Synth
I wanted to design an instrument that was easy to build, cheap to make, and also fully playable and expressive. The
result was the Helios Mk One synth, which is possible to build for around $20. Contructed using an Arduino Nano
(programmed using C++) and the Mozzi audio library, you can build a simple MIDI controlled mono synth with a Filter, LFO and ADSR.
The code is open source, and a fully illustrated build guide is available. Many people have gone on to build this
synth as their introduction to synth DIY after it was posted in Hackaday. Some have gone on to modify the code and add extra functions.
You can watch some video examples of the synth here and
read about the code and build process here.
ARDUINO SAMPLING DRUM PAD
Arduino Drum Pad With Build Guide
These drum pads allow you to upload your own audio samples and then trigger them using the drum pads. One potentiometer
allows you to control the pitch of the sample, while the other control the volume. The switch allows you to choose between
2 samples (more is not possible due to the tiny memory size of the hardware). The drums were built using the Mozzi audio library
and an Arduino nano.
You can see a video example of the drum pads in action here. Or read the full construction guide here.
SLEEP MEDITATION MACHINE
Dodow Clone
With this machine you sync your breathing to the pulse of the LEDs, which gradually slow down over either a user selectable 15 or
30 minute runtime. At the end of the cycle, hopefully you'll be relaxed enough to fall asleep.
Instructions for this build were published to Intructables where it was entered for their Arduino Contest 2017.
