I have an annoying cold which is making me too ill to ride much in the evenings at the moment. So, my daughter is 18 months old, and I’ve decided it is time for her first synthesizer. Apparently this is not normal, my wife didn’t ever have a first synthesizer (Mine was a Yamaha
PSS-680), but personally I think everyone should have a cheap and nasty electronic musical instrument at some point in their life!
I’ve had a bit of a look round, and you can’t really buy toddler friendly musical instruments that aren’t rubbish. So I am currently trying to build / program one myself, based around an arduino micro-processor module I had hanging around.
I had a bit of a requirements/specifications think first and came up with:
1)It should respond quickly without any obvious delay.
2)It should be able to play actual tunes and have an octave of in-tune notes.
3)It should be able to play chords, and/or make horrible noises when you hit lots of notes at once. Kiddy keyboards where it just plays one note at a time are annoying.
4)All the delicate electronics parts should be inside a box away from prying hands.
So far I’ve built a sound generator which gives 8 completely independent sounds (which can be square, sine, triangle and sawtooth waves), which I’m quite happy with – deals nicely with chords and sounds very very dirty if you hold down all the notes at once.
I’ve also made a quick cardboard and tin-foil prototype of an 8 key capacitative sensing keyboard which works surprisingly well and is jolly clever – each key only requires one wire, which minimises gubbins in the circuit, and there are no exposed moving parts, which should hopefully reduce the amount of toddler damage – I’m thinking of using some kind of metal.
It is a bit hard to hear on the video as I’m just using a piezo buzzer while I wait for some headphones out plugs / an amplifier chip etc. in the post, but I’ve made a couple of quick test videos of the current (very far from toddler proof) setup:-