[Need Help with SPI] Euxoloti for axoloti (Eurorack Module)

modular
#157

Oh boy. I'd love to see this project come to fruition. I've been following it once in a while for a few years now. It would be the mostly friendly and community supported programmable module to date.

What can we do to get this going again?

#158

Same for me!
I would love an Axoloti Eurorack module!

#159

If anyone is interested i´d like to sell my build. It is the latest version and fully working except the gate8 expansion.
Sold as is (in need of completion) to the expierienced DIYer
I´d ship worldwide. just send me a pm if interrested

The Euxoloti is know sold!!!!!!!!!!!!!!!!!!!!!!!

#160

I went the lazy way myself. I'm making a Eurorack module out of mine with all the analog and digital control inputs wired to pots and switches. For CV control, I bought a doepfer a-192 voltage-to-midi interface module (though discontinued, Analog Haven still has some) which provides 16 CV ins. I will probably mount them both in the same panel. With that setup, although maybe not as elegant as a custom interface made for the Axoloti, you still have no worries of overloading the CV in on the Axoloti and have PLENTY of controls to play with if your patch needs it. I thought of dedicating some of the digital I/O lines into being gate outs with a simple transistor circuit, but that and the front panel (Front Panel Express) would be the only custom parts.

#161

I spoke to a number of people at Knobcon about this project. If none of them are going to bite, we're going to add a Eurorack solution for Axoloti so people can buy finished modules / kits.

#162

Thats great!
Please, keep us updated

#163

If you would like an established company to sell through, Synthwerks would be interested in looking at what you come up with. Only if you don't want to deal with the hassles of manufacturing yourselves. If you do decide to make product yourselves, think of a through-hole version for the kit (if it is not too complicated). You will sell more of them than a SMD version. Of course you can make a "Smart kit" that was a tested SMD PCB with the user adding just the through hole connectors and switches. There are plenty of web stores that specialize in kit versions and DIY versions of modules that would probably love to sell some.

#164

To be honest, after realising that there was not much progress on the euxoloti recently (so it seemed to me, at least) I was almost considering to roll my own open hardware Axoloti-eurorack integration module. That's how much I'm waiting for this to happen. But to be realistic, I won't have the time to do it right now. So if this project is moving forward, consider me one of the first to build it.

#165

I'm happy to work on some hardware after our launch in October.

I'm still a lot naive about Eurorack. Is it more important to have a lot of inputs, to be compatible with audio generators, or more important to have a lot of outputs, to modulate existing sound generators?

#166

Both! Can I send you some ideas in a private message?

a|x

#167

Everyone is welcome to PM me about this project!

#168

I would absolutely buy one of these!

#169

Hi Johannes, I am not engineer but do you think for scaling+shifting, is this eligible?

IMG_2539.jpg4032x3024 1.52 MB

and to control +/- 5v by 3.3v, does this mean less resolution?

#170

resolution is defined by the dac, pwm etc. not by the voltage that is output.

#171

Thank you lokki

before I use motu ultralight, say sampling rate at 96000.

now I don't know what's the resolution from Axoloti + this LM324N circuit.

#172

what do you want to connect? the motu as well? or is this just an example. 96000 is the sampling rate, bit depth would be more appropriate for "resolution" in that case. (sampling rate being the time resolution, where as bit depth would be the "amplitude" resolution.)

the analog ins of the axoloti have 12bit resolution, so that would be 4096 steps, plenty enough for most applications. since there will be some noise you likely get that resolution down to 11 or 10bits. (2048, or 1024 steps respectively)

the output dac that is talked about in this thread (dac8552) is 16bit, so that would be 65536 values, which is plenty :slight_smile:

#173

Without MOTU, the purpose is to get rid of MOTU as the CV controller, which will be replaced by axoloti. I use laser to make something like lithography so the resolution matters. 96000 is sufficient but not below.

#174

so you need the laser to be repositioned 96000 times per second? as i wrote the resolution of time is the sampling rate, the resolution of steps you can differentiate is the bit-depth. i think the motu will be 24 or 32 bit. if you need that high resolution you are out of luck with the axoloti. the dedicated audio output dac (that you could also use) has a resolution of 24bit at 48000 hz, so that could work maybe?

#175

what kind of a laser? what interface does it have to be controlled by cv? maybe it would be easier to connect the laser directly to the axoloti or an arduino and write a sketch that does control the laser via a protocol, which would then be independent of dac resolution...

#176

I used to control my laser by DAC cv control with skipping the ILDA protocol, it was convenient. I want a standalone laser machine that’s why I am looking into axoloti, I thought it would work with simple offset, amplifier circuit with two UA741 for example.