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Thank that was what I was hoping for.

No it doesn't answer my question. My question is is the backlight pin connected directly to the anode of the backlight LED(s) or is it connected to some kind of driver circuit that actually switches the backlight off or on?

Not having seen a schematic of the ILI9341 color LCD module I have a question about its backlight. Does the backlight pin on the display directly drive LED backlight(s) or is there some driver between the pin and the backlight?

I am happy my project was posted on the web site but I would request one small change. My last name is Lindley not Lindsay. Could you please change it? Thank you

Is there any way other than a screen print to print out a design from the audio design tool?

Thanks that will help. If I redo this into a document format I'll let the forum know.

Has anyone put together a doc which has all of the available audio modules, their inputs and outputs, all of their parameters? I keep having to go back to the design tool to see this info but it would be easier if I could just view a document. If you have such a doc could I get a copy? My...

Hello, I thought I would give people interested in this thread a preview of the article I wrote for Nuts and Volts magazine about my color organ. Check out the article at: http://www.craigandheather.net/docs/TeensyColorOrganArticle.pdf I don't yet know when it will be published. If you have...

Because the frequency selectivity was not as great as I had hoped, I have created new software (running on exactly the same hardware) that uses the 1024 point FFT with octave related bands that seems to work much better. Instead of the original 4 bands, with the new software there are 8 bands...

I'm using an elapsedMillis timer with the audio library and it doesn't seem to keep accurate time. It seems to be running at about half speed. Is there some interaction possibly with interrupts that is causing this? Or is this a figment of my imagination ? Thanks

Color Organ Packaged and Working I've now got my color organ packaged up and running. You can see some videos of it here: Video One - https://www.youtube.com/watch?v=rro2kV_hPF4 Video Two - https://www.youtube.com/watch?v=pvB-QfkeuwE Here is a picture of the side/back where you can see the...

Hi markonian, I haven't done a video yet because I haven't yet built the enclosure for the color organ. So far I've only driven the string of 120 WS2812b LEDs while they were lying on my floor. I've just checked in some images of the various screens into the repository but I'll show them here...

Hello, I've been working on a new generation color organ that uses mostly pjrc.com products in its design. It uses the Teensy Audio library to do most of the heavy lifting, hence I call it the "Teensy Color Organ". I have built many color organs in my lifetime but this is, by far, the most...

Paul, Yes the book is filled with sample code but unfortunately the rights are owned by Prentice-Hall.

Paul, as a side note, I was wondering if you have ever come across my book, "Digital Audio with Java" which I wrote years ago? I asked because you are doing a lot of stuff in the Audio Library that I did in Java way back when. Thanks for publishing your library because it stirred my interest in...

I didn't actually plot the filter data I just looked at the amplitude in dB vs frequency in the serial monitor and could see the filters were working as I expected. Thanks for all your help Paul

Duh Thanks it now works as expected

With the help of others on this forum I got my response plotting code to work but I'm having a hard time justifying what I am seeing. I've included the code and the response data below. Basically I have two cascaded low pass filter section set at 1000Hz each connected to a peak detector so I...

In the application I am developing I need to allow a user to select the filter response: either 12 db/octave or 24 db/octave. This of course will require either one filter element or two. So my question is can I dynamically alter the connections between audio library objects or do they have to...

Thanks for the tips, I increased the memory as well and it worked for me. I hadn't thought about the settling time however, another great tip

Thanks I'll give it a shot.

First let me say that I've just started to work with the Audio library today so I'm probably doing something stupid. I am trying to do a basic frequency response plot of the AudioFilterStateVariable low pass filter. My idea was to sweep the frequency of sine wave oscillator connected to the...

I'm working on a project where I'm going to need to drive about 40 LEDs and I hope to use the OctoWS2811 library because of the fact it uses DMA and doesn't slow down the Teensy 3.1. My questions are: 1. I am thinking of just using a single OctoWS2811 output (pin 2) to drive the single string...

I'll try and answer both questions here: First Constantin was exactly right. Moving high frequency signals from point to point gets more complex the higher the frequency. I didn't have a scope handy when I was doing this so I thought a conservative approach using 8 MHz would be best on my...

I posted this in project guidance but wanted to make sure more people saw it so I re-posted it here. I hope I didn't break any forum rules by doing so. I have just been successful interfacing a Teensy 3.1 to the $5 OV7670 Camera Chip ( without fifo) and the Adafruit 1.8" LCD display and wanted...

I know this is kind of an old post but I have just been successful interfacing the Teensy 3.1 to the OV7670 Camera Chip and Adafruit 1.8" LCD display and wanted to share what I have learned.. I've made the code available at: craigandheather.net/misc/TeensyCamera.zip This hardware software...

Hi, For what its worth, the technique I always use is to not try and decode the IR received codes but to just use the raw IR data codes from the IRRemote library directly and make my own code to function assignments. This seems to be 100% reliable for the IR remote controls I have used in my...

Hi Jeff, You are certainly getting a lot of warnings but only one error I see. I think the file included in UISMFunctions.cpp should be UISMFunctions.h not AUISMFunctions.h. I don't know where the A in the file name came from but I see it in my source as well. Edit this and let me know what...

Phoebus, The video is private so I cannot see it.

Thanks did #2 above and all is well.

Hello This morning I upgraded Arduino to 1.6.1 and Teensyduino to 1.21 on my Mac running OSX 10.10.2. My Necklace app (attached) compiled and ran fine previously but now doesn't even compile. I get the following error messages: PROBLEM ONE In file included from Necklace.ino:20:0...

Yes all fixed, thanks

Is that necessary? I guess I could give it a shot.

More info. I tried running your cube example and it fails as well. I'm running my Teensy3.1 at 96 MHz and am using Arduino 1.0.6 and Teensyduino 1.20. Everything worked fine until this new release.

Hello Sumotoy, I just downloaded your latest driver ILI9163C from github and have found that the clearScreen function no longer works reliably.

Every time I see something cool done on this forum using a Teensy 3.1 I'm inclined to try it myself and in the process have to spend more money and buy more stuff. Luckily this time the stuff was an inexpensive 1.4" Red Serial 128X128 SPI Color TFT LCD display bought on eBay. After reading about...

Yes in my further investigation I proved to myself what you just said. Yes there is a speed hit but for my application it doesn't seem to be a problem. The Teensy 3.1 at 96 MHz is amazingly fast. I actually got UTFT and UTouch working together but I did have to modify UTouch to do so. Used...

I have a LCD which is based on the SD1289 controller chip. I see that the UTFT library supports my display in 16 bit parallel mode. In looking at the UTFT requirements doc I see the wiring from the Teensy 3.1 to the LCD connector uses signals on the bottom of the Teensy board which I would...

In case anyone is interested, I have finished another project based upon the Teensy 3.1 micro controller. Check it out here: http://www.craigandheather.net/celecrystalpalace.html Cheers

Thanks Stefan Your code is working great now. It is just beautiful on my Smart Matrix.

Stefan, Thanks for posting your code. I really look forward to running the mandela on my Smart Matrix. Unfortunately I cannot compile the code in the IDE. Did you miss checking in a file? I seem to be missing the EVERY_N_SECONDS and EVERY_N_MILLIS functions. Thanks for your work

Stefan Will you be publishing code for the above and for the electric mandala ? Hope so

I think this is great. I'm going to try out your code on my SmartMatrix Thanks for posting it

bump, anyone know the answer ? Paul ?

I've read that when using the Servo library on Teensy's certain pins will no longer support PWM. I'm trying to figure out which pins on the Teensy 3.1 won't work for PWM if I use the Servo library. Anyone know the answer? Thanks in advance

Never mind. It is probably my Bluetooth SPP client that is adding the da. Sorry for the noise.

Duff I have been experimenting with your SerialEvent library on the Teensy 3.1 and I am seeing a weird problem. I modified your example program slightly as shown below: /***************************************************** * This SerialEvent example shows the "Read Bytes Until" * event...

Excellent. Thanks for making my coding just a little easier.

I was looking at the serialEvent library and its example programs and I saw a Serial.printf("Termination Character %#02X Event fired: %s\n", Event1.rxTermCharacter, Event1.rxBuffer); statement. When was printf added to the Serial class? I've been including my own version in my sketches for a...

Paul, I did that of course hoping for an easy fix but the problem is the teensy_write for OSX fails. But this no longer matters as I used the Teensyduino loader to load the hex file that I needed so all is well. Thanks for the response.