I'm attempting to build an digital/analog hybrid synth using my arduino uno and I'm stumped on a power supply problem. Currently, I'm working on one of the VCOs, but it requires +15 volts DC, -15 volts DC, and a ground (the schematics for the VCO are here http://www.birthofasynth.com/Thomas_Henry/Pages/VCO-1.html
). What is the best way to use to arduino outputs to power the VCO?
I was thinking about using a NKA0515DC (http://www.mouser.com/ds/2/281/kdc_nka-45878.pdf
),which converts 5 volts into +/-15 volts. I'm still a little shady on how to use it though, and I'd have to use the ground on the arduino, if that's even possible. The other option I have run across is the TLE2426 (http://www.mouser.com/ds/2/405/slos098d-121616.pdf
), witch has a lot more documentation and output a positive and negative voltage, in additon to having a virtual ground. The problem is that it only output +/- half of the voltage in. This means that I would need to supply 30 volts, either from an external source, or perhaps by boosting the output of the arduino somehow, or even combining 6 IO ports set to HIGH (5v * 6 = 30v, right?)
Anyway, what is the best method for supplying power? Should I try one of these, or is there another more efficient method? Thanks in advance.