KenHahn

Paul's tutorial is an excellent way to get started with audio on Teensy. I am not aware of a schematic for the original tutorial as the breadboards came preassembled or were assembled using breadboard coordinates, but this schematic below...

That is a very cool video!

Your issue sounds very similar to this thread. There isn't a known way to accidentally go back to the default blink program without either a long Program button push with power applied or via a software download that I am aware of. Is the...

Another thing to consider is that display takes quite a bit of power and your setup may be drawing more current than the USB can safely supply. USB 3,.0 can handle more than USB 2.0 so if using USB 2.0 port, try a USB 3.0 port or try powering...

The 4 blink code usually indicates a problem with the 24MHz crystal not operating. There was a problem with some Teensy 4.1's having this issue a couple of months ago which was traced to solder paste contamination left under the crystal during...

A question for Paul obviously, but certainly one major constraint is simply space. Besides mounting the audio circuit, you also need to have at least one audio connector such as a phono jack. It couldn't be done without physically growing the...

@flok if you have difficulty finding what you need in the EU, ProtoSupplies.com does have many international customers in the EU, including the Netherlands that order from us using package forwarding services which work very well. You can find...

I am being the messenger here as the user doesn't spend much time on the forum. It appears that the changes fixed some units that previously demonstrated the issue, but on others it allowed them to get further along in the process but then still...

I think that is overstating the issue a bit. If you run the die temp all the way up to 95C which is blistering hot and the point at which the CPU will go into thermal shutdown, then the expected life is derated to 3.2 years @600MHz which is...

@h4yn0nnym0u5e you are exactly right. Of course, availability wouldn't even be an issue had you not put in the effort to create the software to allow them to work in the first place!

For the record, I brought in 1,000, though if I knew how things were going to go, I would have brought in more on that first order. For international customers, the best bet right now is probably to order from Sparkfun who has stock on-hand...

I am posting this to capture the info in case others stumble onto the same issue and are doing a search or have further input. Tagging @defragster as he was instrumental in figuring out what was going on. The system in question uses a Teeny 4.1...