Hi Guys,
I checked various options for a function generator, but then I do not see anything that I can get without overly spending. I decided to go with building one for myself, I test frequency response of my guitar effects pedals so all I need is a good generator that can give me about 100Hz to 10Khz, that's my range requirement, however anything more is always good

Could someone advice a schematic, which is not overly complicated, since I need a simple build for the generator and I also need a Square/Sine/Triangle wave outs.
Would highly appreciate if I could get some information on this please...also if the transistor/IC used is generic enough would be great, since availability of components is a pain in the arse here locally, and for one part I do not want to look up and get something imported.
Some parts that I have at hand are, 2n2222, 3904, TL072, 2n5088 etc...