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Type: Posts; User: NotoYota

1. ## Thread: Power Supply For Modular LED Matrix

by NotoYota
Replies
6
Views
831

### What I was referring to is that you were talking...

What I was referring to is that you were talking about 32A not 32W which is a big difference.
But, indeed having a power supply that can deliver more current than you need is never a problem....
2. ## Thread: Power Supply For Modular LED Matrix

by NotoYota
Replies
6
Views
831

### Its 320 leds * 20 mA = 6400 mA = 6.4A You...

Its 320 leds * 20 mA = 6400 mA = 6.4A
You multiplied it again by 5, but when you multiply voltage by current you get power in watts.
So: 5V * 6.4A = 32W

So not as much as you thought.
You were...
3. ## Thread: Power Supply For Modular LED Matrix

by NotoYota
Replies
6
Views
831

### Well I am no expert but basically it's this:...

Well I am no expert but basically it's this:
This LED datasheet says 20mA current nominally. This times 1000 LEDs is 20.000mA or 20A. On 3.3V you would get P=U*I = 3.3 * 20 = 66 Watt.
These are not...
4. ## Thread: Music Keyboard matrix scanning

by NotoYota
Replies
13
Views
1,651

### Yeah so I figured that out empirically 😁 I just...

Yeah so I figured that out empirically 😁
I just have to be patient until my parts arive in the mail.

Anyways I still am intrigued by the delta time between the velocity sensitive switches.
Is...
5. ## Thread: Music Keyboard matrix scanning

by NotoYota
Replies
13
Views
1,651

### So, to answer my own question: Using a counter...

So, to answer my own question:
Using a counter (like a 4017 in my case) makes it VERY instable. There is no way for the software to be sure what count is being output (so which column is being...
6. ## Thread: Music Keyboard matrix scanning

by NotoYota
Replies
13
Views
1,651

### Thanks for the additional info. It looks like...

Thanks for the additional info.
It looks like the Fatar pinout indeed. Is that fairly common? I was thinking to skip velocity sensitivity for now. But I am curious the time between the two switches,...
7. ## Thread: Music Keyboard matrix scanning

by NotoYota
Replies
13
Views
1,651

### Thanks. So there is really no reason why a hc138...

Thanks.
So there is really no reason why a hc138 is preferable?
I was even thinking of driving the columns using a counter like the 4022. Because there really is no reason to address the columns in...
8. ## Thread: Music Keyboard matrix scanning

by NotoYota
Replies
13
Views
1,651

### Music Keyboard matrix scanning

As discussed in another thread I have this M-audio oxygen 8 midi keyboard (25 Keys).
I couldn't get it to work entirely and some parts were non functional. So, I decided to gut the electronics and...
9. ## Thread: USBHost midi questions

by NotoYota
Replies
6
Views
733

### So, new clues :) I have made a new host-cable...

So, new clues :)

I have made a new host-cable so i can plug in and out different USB stuff.
The M-Audio midisport 2x2 on it's own was working.
But with the HUB it was not. With another HUB...
10. ## Thread: USBHost midi questions

by NotoYota
Replies
6
Views
733

### The hub itself was a cheap brandless thing I got...

The hub itself was a cheap brandless thing I got around lying around. According to the vendorid and productid it's an Atmel 4 port hub chip.

But the weird thing is the Arturia Keystep and...
11. ## Thread: USBHost midi questions

by NotoYota
Replies
6
Views
733

### thanks for your reply. So defining this in the...

thanks for your reply. So defining this in the sketch is not working ok, clear.

Here is the output with only the M-Audio midisport 2x2 connected to the hub:

port change: 10001805
port...
12. ## Thread: USBHost midi questions

by NotoYota
Replies
6
Views
733

### Here are attached some visual clues. Any help...

Here are attached some visual clues.
Any help would be much appreciated.

It seems those M-Audio products just aren't detected as midi devices. But they are very important for my setup to be what...
13. ## Thread: USBHost midi questions

by NotoYota
Replies
6
Views
733

### USBHost midi questions

Hi,
thanks again on so much effort that went into these products. Much appreciated.

I am experimenting with MIDI.
I would like to see if i can make my Teensy the central HUB of my MIDI setup....
14. ## Thread: Gate

by NotoYota
Replies
13
Views
4,130

### I think gates can just as well have a place in...

I think gates can just as well have a place in synthesis. In fact some synthesizers include a rythmical gate effect.
Besides that, I think you're missing some generalisation: a gate is nothing more...
15. ## Thread: Did i just blow up my Teensy 3.6?

by NotoYota
Replies
1
Views
1,037

### Did i just blow up my Teensy 3.6?

Hey guys,

i feel really stupid, but i think i may have accidentally connected one Teensy pin (pin 30) to +5V.
Now my Teensy wont boot up and i can feel the voltage regulator getting hot.
I am...
16. ## Thread: Completed MKS-50 MIDI controller/programmer

by NotoYota
Replies
21
Views
11,120

### Hi, this looks awesome! How did you make the...

Hi, this looks awesome!
How did you make the frontpanel? It looks very professional.
17. ## Thread: Dynamic Object instances--Dynamic Rewiring

by NotoYota
Replies
13
Views
3,309

### Awesome! I see you abort the connection if...

Awesome!
I see you abort the connection if source and destination are already connected somehow.
Wouldn't that prevent connecting a mono source to a left AND right channel of a destination?
18. ## Thread: Dynamic Object instances--Dynamic Rewiring

by NotoYota
Replies
13
Views
3,309

### What if there was an switch object extending...

What if there was an switch object extending AudioStream that, in its update method would just transmit the inputbuffer if it is 'on' or transmit NULL if it was 'off'?
Would that not stop the rest...
19. ## Thread: Dynamic Object instances--Dynamic Rewiring

by NotoYota
Replies
13
Views
3,309

### Ah yes I guess you're right. I misinterpreted...

Ah yes I guess you're right.
I misinterpreted info from https://www.pjrc.com/teensy/td_libs_AudioNewObjects.html

It said:

Somehow I was thinking the other way around could also be true. I...
20. ## Thread: Dynamic Object instances--Dynamic Rewiring

by NotoYota
Replies
13
Views
3,309

### As far as I can tell most objects skip their...

As far as I can tell most objects skip their processing if the input buffer contains all 0's or is NULL.
So you could add a mixer that acts as a switch. Set gain to 1 on the channel that you do want...
21. ## Thread: Fritzing components for teensy 3.6

by NotoYota
Replies
10
Views
5,859

### There is also Kicad, I install it today. But I...

There is also Kicad, I install it today. But I guess it has a big of a learning curve.
22. ## Thread: Fritzing components for teensy 3.6

by NotoYota
Replies
10
Views
5,859

### I'm looking forward to use this, any ETA on an...

I'm looking forward to use this, any ETA on an importable part?
The PCB part is most important for me personally.
23. ## Thread: Contributions audiolibrary

by NotoYota
Replies
3
Views
1,270

### (I accidentally deleted my reply while trying to...

(I accidentally deleted my reply while trying to edit it on my phone, so here goes again)

You're right 14 open PRs is quite good, and of those the mergeability is disputable indeed.

I like the...
24. ## Thread: Contributions audiolibrary

by NotoYota
Replies
3
Views
1,270

### Contributions audiolibrary

Hi,
I was wondering if you are accepting contributions to the audio library.
I was wondering since I see quite a lot of open PRs on the github repository.

I have absolutely no experience yet...
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