Only outputs Saw Wave

[aframires]

Hello everyone!
I'm trying to use this synth in an arduino UNO and, even in all examples, the only output I have in the osciloscope is a saw wave! I'm loading examples using the suggested connection with the supposed resistors and capacitors.

Anyone knows what's the problem?

[aframires]

[troisiemetype]

Did you try to listen to it, or just saw it? Is your setting ok? It loks like the charge/discharge of the capacitor, but with various decharging slopes.
Also, I can see that the frequency setting is 62,5kHz, so there's a chance you're looking to the PWM that generates the audio wave. What do you see when setting a frewuency around what you should hear? That's to say, something between around 100-10000Hz.

[dzlonline]

Triangle is just a PWM artifact. Try listening to the signal (looks to be
correctly modulated)

On Tue, Jun 14, 2016 at 1:58 PM, Pierre-Loup M. [email protected]
wrote:

Did you try to listen to it, or just saw it? Is your setting ok? It loks
like the charge/discharge of the capacitor, but with various decharging
slopes.
Also, I can see that the frequency setting is 62,5kHz, so there's a chance
you're looking to the PWM that generates the audio wave. What do you see
when setting a frewuency around what you should hear? That's to say,
something between around 100-10000Hz.

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[aframires]

I haven't explained myself correctely. The output wave was supposed to be a sine wave, in this situation we are using example "modulation.ini". I'm measuring in the audio output node.

[dzlonline]

Yes :)

On Tue, Jun 14, 2016 at 2:51 PM, aframires [email protected] wrote:

I haven't explained myself correctely. The output wave was supposed to be
a sine wave, in this situation we are using example "modulation.ini". I'm
measuring in the audio output node.

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