Search results

Announcing the TactileAudio Project. TactileAudio is a Teensy-based capacitive-touch audio and haptic (vibration) player, including a complete software library, full instructional web site, 18 YouTube videos, a professional PC board, and a complete material list. Originally designed for artists...

Announcing the TactileAudio Project, TactileAudio is a Teensy-based capacitive-touch audio and haptic (vibration) player, including a complete software library, full instructional web site, 18 YouTube videos, a professional PC board, and a complete material list. Originally designed for artists...

Don't compute impedance, measure it You can't really compute the impedance because you don't know the internals of the chips inside. If it's important, you can measure it. The simplest way is to put various loads (e.g. a 1K potentiometer) across the output and measure how much the signal...

Mea culpa, thanks for your fast response. That's exactly what happened. Which leads to a separate problem, but that's probably for a different thread. Which (quick summary) is that Arduino frequently claims that the Teensy 4.1 has suddenly gone offline. It's (apparently) random. Unplug/replug...

A software update of the Teensy Arduino plug-in has broken the Audio library. Teensy 4.1 Arduino 2.0.3 Teensy Plug-in 1.57.2 I updated Arduino from 2.0.1 to 2.0.3, and everything worked fine. Then I updated the Teensy plug-in to 1.57.2. Now I get this error: Any ideas how I can fix this...

Indeed, and I appreciate the questions. Good idea, I'll double check, and re-flowing the soldering certainly won't hurt and might work. They work quite well; there's a knife connector inside that grips the wire reliably. They're a little time-consuming to assemble -- each block of connecters...

Thanks, I'll answer your questions, but first more information. I have since found (trial-and-error) that sometimes reinserting the SD chip fixes the problem -- twice out of a dozen attempts. So my suspicion is that this is a mechanical problem: the SD card reader's contacts are defective in...

I'm putting together a project that involves a half-dozen Teensy 4.1 + Audio shield systems. One of the audio shields died after just two days -- the SD reader won't initialize any more. I verified that the micro-SD chip is OK, and I replaced the Audio shield with another (they're paired to the...

Problem solved ... thanks to all for your help. Happily, Arduino 2.0.0 was released this week, and I was able to install it. The problem of selecting the wrong SD library went away, and the crash disappeared too (I also increased the AudioMemory() setting, which was too low.) I have to add that...

Thanks ... in fact I already spent almost a full day trying to sort this out, but I'll try again. The problem is that there's no documentation on stuff that (to experienced users) may seem obvious. The output lists all of the places it finds the SD library, but they're in the code-relocation...

Hi Mark, thanks for that. The AudioMemory was indeed to low. However ... it made no difference. The program still crashes at the exact same location with the same message. I increased from 8 to 16 to 32, then 128 just to be sure. No change, still crashed. Thanks, Craig

The code below crashes the Teensy 4.1 + Audio Shield. It's a sketch that attempts to play four tracks simultaneously. It works for 1 or 2 simultaneous tracks, but the third track causes NULL-pointer exception. Using Arduino 1.8.16, Teensyduino 1.55. (Note: I tried a newer Teensyduino, I think...