make a CMOS oscillator in under 2 mins

[ReignLicks]

I really want to make a synth with multiple different sound waves like Square Wave, Sine Wave, Saw Tooth Wave etc etc. What chips would i haft to get to make them?

[fridgebulb]

An interesting mod for this is to replace the potentiometer with a light dependent resistor, and you get something thats vaguely like a theremin. I've never used the hcf40106 chip, but a similar oscillator can be built with a few more basic bits and a 555 timer, which are very cheap and readily available.

[lukepieters]

Thank you so much this really helped

[lukepieters]

Where can i buy the chip?

[shad0wburn3d]

You can do some great stuff with this simple schematic :) Excellent vid!

[f0ckt]

very cool.

[rafaelmachineski]

thanks for the video, very informative

[HUSTLEBANE]

what does an oscillator do and what do you need that potentiometer for?

[hannobisschoff1]

Nice vid, just be carefull with square waves and speakers in long term use. with enouhg power you can rip the coil out of the membrane or "cone"

[elijahlucian]

THANK YOU

[Ciaran55]

does that jack output have a serial number or anything, so I can find it on eBay? I'll need to get one...

[madamerotten]

@Ciaran55 Use a 1/4" mono jack like Switchcraft type 111X, available at Mouser Electronics and other distributors. Also, he's only using one of the six sections of the IC (pin 1 as input and pin 2 as output). He should commit the five unused inputs to either +9V or ground. For example, he should ground pins 3, 5, 9, 11, and 13. Leaving these inputs floating will invite problems, including the possibility of the IC overheating. Lastly, it is good to add a 0.1uF decoupling cap from pins 7 to 14.

[Cds56]

What cmos chip is that? I mean, would a CD40106 be a fair replacement?

[Cds56]

What cmos chip is that? oh wait. I mean, what is the value of your pot?

[donotfret]

very good thanks, whats the max frequency?

[donotfret]

very good thanks, whats the max frequency obtained?

[donotfret]

very good thanks

[3mustardMoNkEyS]

wouldn't the 9V kill the CMOS chip or are you using the old CMOS chips not the HC,AC variety?

[leafcutter]

@3mustardMoNkEyS That is a HCF 40106b chip, it's rated up to 18v with a recommended operating range of 3 to 15v. So 9v is not a problem for it.

[Cds56]

@leafcutter I just so happen to have one of those!!! What other components, specifically are needed?

[Cds56]

@leafcutter 100N?? would that be 100uf?

[leafcutter]

@Cds56 no 100N = 0.1uF but you will get different pitches with different values. Try a selection of different capacitor sizes. Same goes with the variable resistor i think i probably used a 1M or 100K you'll get results with any large VR. In fact you don't even need a VR just attach two bare wires to pins one and two and use your skin to change the pitch!



[Cds56]

@leafcutter I can't tell which way you're orienting your chip, so I can't tell where your cap is and resistor.

[bguerreiros]

Please my friend! The list of component circuit!

[Drevilbreakfast]

nice work i just got into electronics and this seems lik a good first oscilator

[FSK1138]

cool thanks :)

[eliah2000]

this made me want to get into electronics, too!

[steadiworkz]

Awesomeness