About power with Qwiic, Arduino and Tsunami

Qwiic System
1

Hi everyone,

I have a few questions about Qwiic, arduino and Tsunami super wav trigger, but first I need to say I’m a total noob in electronic, qwiic etc…
But I’m a sound artist that sometimes need to create systems for sound projects.

I’m planning to buy this module : https://www.tesseractmodular.com/eurorack-modules/nutella-tsunami/
which is a conversion of Tsunami super wav trigger for eurorack. It’s perfect for me as it is to use for eurorack performances, but for other projects, I’d like to use it with an arduino to have more control over Tsunami.

The thing is, Tesseract Modular (Nutella Tsunami’s manufacturer), designed it to work with an eurorack power supply, wiche deliver +12V, -12V and +5V.
The usb port of the Tsunami is still accessible, but the eurorack part won’t work if I power it via this port.

My plan is to connect an Arduino to the module via Qwiic, but as I think I understand, the Tsunami would be powered via Qwiic, and I guess there is a risk to power the module on one side via qwiic, and on the other vie an eurorack PSU…

So is there a way to power the Arduino on one side, and the Tsunami, via eurorack PSU, on the other, and not via Qwiic?

Again I’m sorry if this seems basic knowledge or really obvious, but really big noob here… So if anyone can enlighten me with this issue it would be really great.

Have a nice day !

2

If I’m understanding correctly…you could just snip the power and ground wires on the qwiic cable (red and black) and try it that way? The qwiic cables are pretty inexpensive

3

Thanks for answer !

Yes you’re right I coulds try that. I’m new to qwiic and didn’t know which cables are used for power (well, red and black, I could have guess…)

After posting my question I also saw this on the Tsunami’s page :

" By default, the board’s power is isolated from the Qwiic connector system. Bridging the 3V3_Qwiic jumper allows users to connect the board’s power to the 3.3V input voltage of the Qwiic connect system."

So I guess if I don’t touch anything the Tsunami won’t be powered via qwiic by default.

Thanks again

4

Even better! Good catch :hook: