Search results

Another point regarding your schematic, I believe that the Reset pin should be tied to VDD, and not floating. this is how I run mine. The datasheet has "The on-chip POR circuit holds the device in reset until VDD has reached a high enough voltage to deactivate the POR circuit (i.e., release the...

Register settings here: https://orchardelica.com/wp/?p=695

schematic used Schematic used here https://orchardelica.com/wp/?p=692

Not for T4, but T3.5 - for an example of setting the pins on the 23s17 to input or output, here is an example of code using SUMOTOY's library, which is as simple as GPIOset input or output. https://github.com/mortonkopf/Teensy-16-RGB-rotary-encoder-SPI-panel/blob/main/chips.h the project that...

plus one for the SPI version: MCP23s17. also has two interrupts for each chip (two ports), and like I2C can be chained to eight in length. obviously nowhere near 150 encoders, I am running sixteen rotary encoders in polling mode on a single chain, and no glitches. the interrupt method was...

i use a rotary with button combination, the rotary dials in the memory slot i want to save in, then one button retrieves what is in the memory and writes to the arrays that hold the values being applied for whatever, and another button writes the current values to the card file slot. This way I...

for my sequencer project I use the 3.5 sd card. I hold 16 note and other values in an array and write the values of this array to a file on the sd card, and then read the file back when needed. this way I can have as many presets or favourite groups of values stored and recalled, and EEPROM size...

You may also find the list of codes at the MIDI site of use, as Teensy coding will be able to leverage all those messages from your controls to do many things to turn a midi controller into whatever controller...

no, it should not be anything to do with ws2812serial. its probably just a bit of adjusting how the pixel data is retrieve from the the three colour arrays. for the colours take a look at the "leds.setPixel(ledLocation, Color(ArrayG[ledCount], ArrayB[ledCount], ArrayR[ledCount]));" changes and test

confusing, and i am really not sure why this is happening. It certainly looks like for the non test image (bird) the line leds.setPixel(ledLocation, Color(ArrayR[ledCount], ArrayG[ledCount], ArrayB[ledCount])); should have the colour values in a different order. In your image of the leds, red...

that is odd. The four colour test BMP file comes out correct, but the next BMP file doesn't. Both files were formatted to the same BMP type, 24bit?

hi, so easiest way to get the colours sorts is to load a bmp that has three sections, one each of R,G and B, so that you can focus in on things. The priority would be to set the set the LEDs call "WS2811_whatever" to the description on what you bought, and then set the defines to that order...

glad you got the BMP showing with the 'real' code. not sure where your original code came from, but whatever the case, you need to break it down into smaller parts and check the flow, otherwise its just garbage and you wont be able to leverage it to make your own project work how you want it to...

your code in post #1 never calls the leds to show their colour status, even if the colour status is updated from the buffer. also, in that code (which isn't mine), there are a bunch of other issues related to image size buffers, have a scan through the code placed on this thread post number 27...

Hi, we all have to learn, and hopefully are still doing so. Exactly which test (rainbow / fire / etc) worked with your leds? under the teensyduino file menu > examples (Fastled or octows2811 or other)? from the above, I assume that you are using ws2811 leds. Also, did you get the serial print...

Hi, I don't recognise chunks of the code you posted. Do you get the serial monitor print statements from the drawbmp functions. Also, I can't see anywhere where the programme sets the leds, whether its leds.show() or whatever. Perhaps i missed it. So, SD can be read, so that can be discounted...

Hi, I think that KurtE was actually saying that the signal and the power need to be of the same (or similar) voltage. Even though you are using 5v separate power supply, the teensy is still only outputting 3.3v data signal. Arduino (depends what you are using) may well be putting out 5v data...

a classic use of sample and hold in modular synth is to sample a noise signal to obtain a random voltage value and use this to set something like the resonance or cutoff value of a filter. If you set the rate of sampling to 16ths or whatever, you get some nice rhythmic tweaking. sample and hold...

Glad it's working. Also, just a reminder, that zerois counted as the first file in your loop, so 20 files would count 0 to 19 as your loops are written starting from zero. You can also write code that counts the number of files on the sd card, so in theory, in setup, you could scan the sd card...

possibly five tracks has been hard coded into the code? you have several places where button count is reset to zero or four if it crosses those thresholds in the incremental loops. I suggest changing the hard code "4" into a variable that you set to agree with the number of files to be played...

ah yes, check all if() statements, as = must be == when doing a compare. they are there throughout the control change routine

glad you got it working. state machines are building blocks of many projects, so its good to understand them. Had a quick scan and it look good, the difference comes from there being two leds per colour, and my example just dealt with one. it works!!

Stick with the state machine approach for now, its worthwhile. below is the kind of thing you need to do, but i am a bit rushed at the moment, so its the concept rather than the specifics below Firstly, you need to add a state variable for each led, this is NOT the same as saying it is off...

HI, this "For example if I tweak a CC the LED strip will turn on to that value, regardless of the fact that there has not been a noteOn message." relates to my suggestion in the pseudo code with the line //add lines to go an update all leds that are currently on. So, what you could do is add...

This: "This is working OK in the sense that MIDI CC#18 will now effect the brightness level of the LED when it turns on, but once it's lit the brightness level is fixed at that value and CC#18 has no more effect on the LEDs, and as such I can't, for example, fade the light out." is probably...

:D and 10 characters

slick! where's the up vote button!

a number of ways, and swing means different things, some are every even beat, and some sequencers might just add to 3rd and 7th note. For an example (just one way of many) see here for swing on every even beat...

You have stumbled upon the question that invariably comes with Midi sequencer building. See here for examples: https://forum.pjrc.com/threads/66500-Attempting-to-make-an-internal-bpm-clock?highlight=midi+clock and https://forum.pjrc.com/threads/53467-midiClock-BPM?highlight=midi+clock NB...

it does sound like a connection issue. check for solder bridge? You will have done it already, but double / triple check pin locations: https://www.pjrc.com/teensy/pinout.html and half way down this page: https://www.pjrc.com/teensy/tutorial4.html swap pedals out if possible, to eliminate...

@miasei - your diagram has two of the connectors of P3 PIN going to the same row, they should be as you have the first two, going to different connection points. If truely wired this way, you have both going to ground or whatever.

@Expensive Notes - there's nothing too mysterious in checking for the clocks coming in, as the callbacks rely on "MIDI.read();" which is done in the loop. So, in effect, you are indeed "having the Teensy constantly monitor the incoming Serial". the trick is to manage latency, so have very short...

great stuff. commenting to keep in the loop with updates.

I can also highly recommend the SPI version, MCP23s17. especially as the set up of all eight chips on one CS line works very fast on polling loop, so no need to worry about dealing with interrupts and all the potential pitfalls of that approach. over a 100 in out on just one SPI, and dealt with...

@RIchard, will get it in the post in the next day or two. Board is populated with everything other than the rotary encoders. feel free to delete you address from above message, I have taken a copy. all the best

@RichardFerraro - i stuck with 100nf capacitors. the circuit is fundamentally the same as the PCBoard used here: https://forum.pjrc.com/threads/64850-16-rgb-rotary-SPI-port-expander-panel-testers I have one of those boards remaining, which you may have for free. It has one error on it, a small...

very impressive 16n fader controller for cv control of eurrack modules: https://www.youtube.com/watch?v=RWA2ovimEkA&feature=emb_logo open source: https://github.com/16n-faderbank

Thanks for that chart KurtE, I keep coming back to it and it keeps ptoviding options.

of course, the MAX is only 12bit, so no ES-9 comparison, but will get you up and running. would be good to hear your experiences of cv input

Here is an image of the relative sizes of the Teensy 4.1 and the MAX11300 breakout module. there is a very short example of octave pitch and slide voltage here: https://youtu.be/sTwCMwH0qiw

@JML, I am using the MAX11300 breakout board in my setup for voltage output being controlled ny the Teensy, and precision is fine. I use its to output -5v to +5v, but as you say, it can also be set for 0-10v. I found the library created by Wolfgang Friedrich, 2014, very easy to use. The breakout...

Prok drum modules: https://prok.co.uk/pages/eurorack/ Bassdrum, Snare, Hi-Hat and Hand Clap.

hi there, I have had some panels fabricated and am looking for a bit of testing. I have two SPI port expander panels for 16 RGB rotary encoders available if there is someone out there who can use one and is willing to add a bit to the library. offered for free as I need them testing. PM me. Read...

@KurtE, many thanks for the clarification. As suspected, but good to hear / see RE Class. priority is SD, I will run tests to see how SPI or SPI1 handle mixed CS for the different chips on same line. Hopefully the MCP23S17 is tri-stated. thanks again.

this thread feels like the best place to ask: support for SPI2 on the pin set pin 54 - MISO2 pin 49 - SCK2 pin50 - MOSI2 is this impacted if SDIO (42,43,45) is being used? On KurtE's card these are also labelled MISO2, MOSI2, SCK2.

I am almost complete with my Teensy 3.5 euclidean sequencer for eurorack. Should have the code sorted in a couple of weeks I have some code available on GitHub for the stand alone version which might be of use to you: https://github.com/mortonkopf/Teensy-Midi-Euclidean-Sequencer the main three...

@recursinging - very useful, thanks. I saw some discussion on Muff Wiggler and Axoloti forums mentioning the polyend poly, and I see that there is some hope for a stable voltage output and reasonable tracking. those discussions led me to get hold of the dev board and see how it could work with...

well, probably 30 quid after some postage.... but yes, I take your point, still cheap and very accessible for the DIYer that droop rate was interesting. sample and hold on Mutable Instruments Kinks is less than 1mV/s as comparison. BUT... refresh rate should deal with that.

Hi all, does anyone on the forum have practical experience of using the MAX11300 chip as Control Voltage output? The MAX11300 chip, particularly the MAX11300PMB1 peripheral module seems to have great scope for marrying to the Teensy to provide stable 1v/oct outputs in a large number, with the...

Teensy eurorack simple drum module: https://github.com/mortonkopf/Teensy_simple_drum Here is a short video of the drum module with the step divider https://www.youtube.com/watch?v=7iTxoKPSAh0