Sorry, made mistake when drawing, 10n cap. should connect the pin 15 after the Sw. as shown in coreected drawing.
checked and,was connected correctly on test breadboard. Any suggestion for suitable IC to replace Astable Osc. Cct ?
Attached 555 Osc. Cct produces both triangle and square waves..but I need Sinewave to produce sound of set notes.
Found good tutorials on Utube for Eagle Software, hoping you will see my terrible drawings cured when I figure out how to use it.. Thanks.