oddson
Senior Member

A mux will have a supply voltage range and if your peaks are not wildly outside of that (since it's a low impedence transient) it's very unlikely to fry the mux. (Even if you're only powered at 3.3v.) But I'm not an...

Teensy 3.6 uses 3.3 v for signals but you can still power MUX from the 5 v pin from the USB supply. Some mux only need 3.3 supply. Not sure about having no voltage protection for the mux... they are much more robust...

https://en.m.wikipedia.org/wiki/Scientific_pitch_notation Note comments under 'Similar Systems...'

If you're midi monitor says 48=C2 that's nothing to do with teensy.

There are also GPIO extender chips that communicate via protocols like I2C but I personally don't feel it's worth the overhead when index loops with multiplexers extends array-based code so readily. Also while...

I'm no expert but the matrix configuration is only a means of scanning multiple signals (usually HIGH and LOW from pull down switches). (What follows assumes you are polling rather than using interupts...

No...you still don't have me. I get the matrix thing but not what two sensors per bar will do for you.

The idea is to produce something like an envelop signal so that intensity is read directly without requiring multiple reads to happen across a peak in the signal. I was more than a little vague but I was assuming...

Hey Thanx for the shout out... I've wondered if active filters with low cutoff frequencies would allow much shorter scanning windows that would reduce latency and improve accuracy when many signals are read via...

This range seems unlikely. Seven-bit MIDI is 0-127 but pitchbend expects 14 bits. https://forum.pjrc.com/threads/26179-usbMIDI-sendPitchBend-input-values

There is a wavetable object in the audio library. https://www.pjrc.com/teensy/gui/?info=AudioSynthWavetable Watch this before trying the audio library: https://m.youtube.com/watch?v=wqt55OAabVs

Part of the issue is on the PC side where you would need a MIDI application or utility to send thru MIDI. A Teensy 3.6 can act as a MIDI host so you could send MIDI for the controller without a PC. Or a hardware...

You took out a question about device names... was coming back to paste this: https://forum.pjrc.com/threads/51110-Device-names

My last post with code is Liam's sketch with my analog section added. Pin 0 selects note mode if HIGH.

Isn't that what Liam's code does?

What voltage is that? Just set the pin to either rail and it should stop pumping CC 21 messages... after that you can trouble shoot the buttons. If you like the other code I can graft the analog section from mine...

Won't pull to ground... might mitigate the floating a bit but just use a wire to ground. Tested on a T2 and the latched system is working for me.

You may be seeing random CC on 21 from the A0 pin floating if you are testing without the voltage divider from the pot keeping the pin stable voltage. You can ground the pin (or set it high) or you can comment out the...

whole bunch wrong with it... try this but if it doesn't work give me a day to get find a Teensy I can test on. // include the ResponsiveAnalogRead library for analog smoothing #include <ResponsiveAnalogRead.h> //...

....hmmm... this is the note version isn't it? But it would not work anyway... will post code shortly

Opps... replace the code above the setup section with the same from the note version, where I made the required changes for your part count.

My code uses ReponsiveAnalogRead() to provide hysteresis and low pass filtering. I used to roll my own but RAR works great and is easy to use. The code you've found is unusual in that the dead zone of the...

Teensy 2 uses 5v and there is no analog ground so it's the 5v supply and ground to upper and lower legs with wiper to analog pin (A0 in the examples given).

This code compiled but is untested... if it doesn't work I can get it there in a few minutes next time I have the hardware to test. /* Many Buttons and Knobs with CC toggle buttons You must select MIDI from...

There is an example file in the Teensyduino distrubution called Many_Knobs_Buttons but its set up for notes on the buttons and not CC (and there is the issue of whether you want latching on-off behaviour which is...

Any Teensy can handle this and it's not too much for a first project if you can do the physical build. The example file for many pots and buttons should work. You can have more than one expression output but you...

You only need to set to the lagged value when it changes so you can move carryValue assignment next to the midi send. Btw - please use the tags for any code you post. It's the number-sign button in the blog editor....

Wondering that myself. I just keep lagged values and compare and send if changed. I'm not sure conNum isn't reversed as your comments seem to contradict your code.

On a quick look it seems you are on track but I didn't compile it... have you tried it? The delay may not be required now. You will still send a few redundant messages where different readings send the same CC value...

That's a lot of expression pedals... how many feet do you have?

@Paul... switch is not used as a trigger but as a boolean-selector toggle so debounce is not an issue. @OP digitalRead is already boolean where HIGH = True. https://www.pjrc.com/teensy/td_digital.html Checking...

You need to read it as a boolean value with digitalRead() if (digitalRead(swPin)) { conNum = 1; } else { conNum = 2; }

You read this, correct? https://www.pjrc.com/teensy/troubleshoot.html

GND & AGND are nearly the same thing but AGND is tied to the power supply conditioning components for noise reduction. It sounds like it's fried but not from connecting those.