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Yeah that's just the photo, the traces keep going to the "JPLED" connector. That might be the 45º angle on the low quality jpg that do not translate.



And we have a winner, for some reason the...

I had the PCB done by JLCPCB, I soldered only the pins that are used:

23638

23639

23640

Thanks for the suggestion,

First I made it work with the audio board and the scanner, I had to add these 2 lines at the top:


#include <Audio.h>
AudioOutputI2S audioOutput;


also I...

So I've made a PCB only with the TLC59116 chip and the few required resistors to test. I still get the same result.

I looked up the chip datasheet, and the address of this chip when A0-A3 are at...

Ah I looked at the schematics and since it was saying 3.3v to 5v power supply I chose 5v (cannot remember why though) but you are right the typical example shows it powered with 3.3v...

Thanks for the suggestions,
So I have run that test without the RESET and REXT and also with them (but I'm connecting the resistors on that super small chip holding everything in my hands so I'm...

Hi,

I'm trying to use a TLC59116IPWR that I made a pcb with but nothing happens. Here is the schematics:
23332

First, I noticed I might need to actually wire RESET and REXT, but I tried to do...

Thank you I appreciate that,
I didn't know about Tindie actually I just googled it and it looks interesting, thanks for the tip

Shipping takes a good 2 weeks to Europe, maybe 3 this time of the year.

I'd say it's pretty easy, there are only through hole components and not a big list of them. Just make sure to read the...

Thanks,

I sell the boards to help me with the cost of engineering all this, so I haven't shared the Gerber files yet, but I intend to open source everything so I give all the schematics and code....

Hi,

About a year ago I posted here to show the very first version of my work.

Now I have a pretty stable platform, but I'd like to hear any ideas how to improve quality of the electronics, or...

Hi,

I'm making a PCB that would allow me to have 9 leds and choice of either potentiometers or rotary encoders or pushbuttons.
To be more specific, it's a board with 9 leds and 9 controls. I...

Well usually the MIDI thru is separated from the MIDI out, so that would only happen if the device has a merged MIDI thru+MIDI out, but I imagine that in those devices there would be a setting to...

Yes, simplest is just to not retransmit, there is nothing in the MIDI library that automatically retransmit thing, you have to code it if you want it. So the devices will just send and receive, as...

Yes I'm trying to prevent too much latency so I'll give the serial a try, but if there is too much latency then I'll have to find another way.




Ah right, Then I would have to make a chain and...

I see, there will be so many messages at the same time it seems too tricky to do just a simple "free-bus flag". And I don't want to encapsulate this into another protocol to keep it compatible with...

So worst case most of the messages would be lost but it should not burn the Teensy? If there is no risk of destroying the Teensy I'll give it a try keeping in mind what you said.



I could do a...

Hi,

I'm looking at connecting together multiple Teensy via their Tx and Rx pins so they can communicate using MIDI.

I'm wondering if I can do this:
18831

So basically connecting all of...

I totally understand why everything is not there yet.

A complete documentation would be great but also not necessary, only a quick note on those obvious things that where there before but are not...

I'm talking about the audio over USB yes. Nothing was letting me know it wouldn't be there for months on Teensy 4.0 and in my project I am using it.
I didn't expected the new version of Teensy to be...

Well, I would have appreciated a note on the site before I buy 2 Teensy 4.0 + 2 audio boards that I can't use for my projects that work with Teensy 3.2 (bought on November 2019). Or maybe I missed...

Hi,

Will the final 1.49 have the USB audio (including the Serial + MIDI + Audio mode) back?

Hey,

Here is finally a complete demo of my synth including raw audio and demos with reverb at the end.


https://www.youtube.com/watch?v=B31acUEkhWc

It uses Teensy 3.2 but will be updated to...

I see thanks for the precision
I'll make some changes to my board according to all the answers thanks

Ah, thanks for these informations, I'll make the changes

Thanks for the advices, I guess I'll have to give it a try...

Thanks also for the schematics, it's different than the schematics from TI but I will trust what was tried here.

I think I see what you mean.

I'll have multiple of this board, most of them with the audio board, some without. In case I use the audio board, I'll use of course the right one according to the...

To be more precise I am referring to this schematics:
18216

so 2 capacitors on the out: 0.1uf and 22uf
You would replace those 2 by 1 of 100uf?

Thanks for the detailed response.
I'm not going to take any chance to forget to unpower the Teensy before unplugging the USB so it's not optional to me.
I saw on the schematics of the chip that...

So if I refer to the Teensy 4.0 pins
18213

and Teensy 3.2 pins
18215

- Pins 0 and 1 are RX1 and TX1 on both
- Pins 2 to 13 are digital pins on both
- Pins 14 to 23 are analog inputs on both

Hi,

I'm making a board compatible with Teensy 3.2 and Teensy 4.0 and both with the audio board (I left some space around) that provides headers to connect potentiometers, leds, buttons, ..., a dip...

Thanks for the answers,

According to the datasheets of these 2 chips, the TPS2055A is bigger yes, still SMD though but it seems to not exist in through hole package...

Thanks

Hi,

I'm making a board for Teensy 4.0 that will use its USB host capability. I read somewhere in the forum that Teensy 4.0 does not include a USB current protecting chip and that it is required to...

Cool, thanks for the help

Yes right the Teensy have 2 USB, 1 device and 1 host.

Alright so the simplest solution is to have one Teensy with a hub connected to its USB Host port, and all the others with their USB device...

Hi,

I'm looking at using multiple Teensy, possibly only 4.0 but maybe 3.6 too, they would act as MIDI devices and would need to be connected together via USB, either 1-to-1, either 1-to-many...

I just added potentiometers to play with a few settings, here is a new demo:
https://www.instagram.com/p/B3dC9hZhGUw/

I pushed the code on GitHub again.

Thanks, yes I'm trying to keep it simple

Thanks I didn't know that

Hi,

I recently made a synth using Teensy 3.2 and the audio board, and I was asked if the code would work with an ESP32 chip instead. I'm not sure what to answer and I tried to look for any...

Hi,

I recently started working on making my own synth because I can’t afford to buy one but I have already a Teensy 3.2 with its Audio Board.

So I made a simple polyphonic FM synth, that is...