MIDI synth (binary logic and basic electronics)

[Sugardude]

Hello there...
I'm new to this forum and new to electronics...

Normally I spend my time making music, and at school we study a bit of electronics and binary logic with NAND and NOR gates and stuff...

When I discovered MIDI was a basic binary signal I thought, ok, I want to make my own synth then... So I pretty much know how to do all the work exept one thing, converting a voltage, an amperage or a wattage (whatever seems simpler to you) into a frequency... If I could find or if somebody knows a simple circuit that could give me a variable frequency that I can control (from about 130 hz to 989hz) then I'd be a happy dude (I can do with sine, square, triangle or sawtooth waveshapes)...

Thanks a lot for any help you can give me, I'll post the synth's schematics in here once I'm done so any other electro musicians can have fun building it too...

 

[audioguru2]

Hi Dude,
Welcome to our forum. ;D
There is a good function generator in our Projects Section. It produces sine, square and triangle waveforms over a wide frequency range. It can be modified as per the 8038's datasheet for sweep frequencies and a sawtooth wavwform. Its obsolete LF351 opamp can be replaced with a TL071CP opamp. The project is here:
http://www.electronics-lab.com/projects/test/009/index.html

 

[Sugardude]

Wow, thanks audioguru...
You've just helped me a lot...
I'll let you guys know how I get along with this...

Yet again, thanks