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Author Topic: Triangle waves?  (Read 2331 times)

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Offline ChrisGreece52Topic starter

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Triangle waves?
« on: May 13, 2013, 02:53:03 pm »
Hello my LM358 arrived today and i saw many tutorials about it and i have made a reasearch about it too ... but i was trying to create a triangle wave with it with no succes ...
My setup
pin 4 gnd
pin 8 VCC(5v)
pin 3 3.3v
pin 2 square wave with arduino
pin 1 -- o led o--- gnd
a capacitor from Vout to pin 2
and a 20k resistor from pin 2 to my square wave.
I cant find the mistake ... it should work like a charm...
Please help :P
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Offline nuhamind2

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Re: Triangle waves?
« Reply #1 on: May 13, 2013, 03:20:30 pm »
My guess is your capacitor saturated
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Offline ChrisGreece52Topic starter

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Re: Triangle waves?
« Reply #2 on: May 13, 2013, 05:30:35 pm »
Quote from: nuhamind2 on May 13, 2013, 03:20:30 pm
My guess is your capacitor saturated
Thanks now the led is on but i cant see any effect.... it may be the frequency of the arduino signal!!!
And no that was not the problem....
« Last Edit: May 13, 2013, 05:36:54 pm by ChrisGreece52 »
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Offline ChrisGreece52Topic starter

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Re: Triangle waves?
« Reply #3 on: May 13, 2013, 05:38:56 pm »
Thats was the poblem... i am so dump when i moved the arduino a bit something must have moved and the circuit is working like a charm!!!
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Offline ivan747

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Re: Triangle waves?
« Reply #4 on: May 15, 2013, 01:11:18 am »
Poor breadboard connections... They are a pain in the ass. Always ensure the wires you use hold tight into the breadboard or connector you are using.
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