Hello people !!
I'm newbie 
It's possible connect real distortion on card Axoloti ?
I have a pedal distortion and I like insert directly on card
I don't know physically
Sorry for my English
David
It's possible to insert real distortion Pcb on axoloti
David
#1
not quite sure what your asking...
you could of course connect a pedal to the output jacks of the Axoloti...
and if you wanted to, you could hardwire this, by connecting to the RTS pads, behind the jacks.
and/or you could build your own distortion circuit and connect to either RTS or LIN+/- (see codec for details), but you'd still have to build your own mixing if you want stereo dry/wet.
(if you only need mono, you could use one channel as dry the other as wet)
of do you mean inserting prior to the DAC? that's trickier and depends exactly on what you want, but would need additional circuitry and more code to interface it.
(this is because the coded used, adau1961, only provides the 2 channel IO that is used for the main stereo input/output)
... sorry if this doesn't answer your question, but as I said not exactly sure what your after, also what you can do will depend partly on your hardware/software experience.
Gavin
#3
I am guessing you are playing a guitar connected to an amp ??
If so the following are possible..
Guitar -> distortion pedal -> Axoloti -> Amp
Guitar -> Axoloti -> distortion pedal -> Axoloti -> Amp
Guitar -> Axoloti -> distortion pedal -> Amp
However if you want Axoloti to be able to adjust the parameters on a distortion pedal, this too is possible, but is rather complicated depending on the method used.
David
#4
Thank you for your reply,
I would connect in the pcb card. Physically connect the cards and include the effect in the software.
This is a example:
this is exemple in software:
sorry for my english
Gavin
#5
It depends on what parameters on your distorion pedal you want to adjust, and what options you have to controlling those paraemeters from within the Axoloti.
If you want to switch things on and off, you may be able to incorporate a relay that is audio friendly. If you want to adjust a potentiometer, if using an analogue pot, you need to find a way of turning it, if you want to swap out the pot for a digital one, you will then need to communicate with it to adjust it accortdingly. And it may even be benificial to encorporate other programable hardware to achieve.
Based on the couple I have mentioned, yes it is likely very possible, not aware of anyone on the forum who has tried to incorporate an effect pedal like that, it is on my bucket list of Axoloti projects to tackle, but low priority for now.
janvantomme
#6
This won't work like you want in your patch. The GPIO pads can only send out or read control voltages between 0 and 3.3V. They can't be used for audio signals.
You could however use these control signals to control parameters for your distortion circuit. But you'll have to use the audio out of the Axoloti to send the audio through the extra circuit.
