I don't know the HUB75 protocol at all, but I imagine that it may be similar to the reason you want a level shifter for WS2812B (neopixel) leds. Some boards may not work if the data stream is 3.3 volts but the LED...
It would be nice if the audio examples that reference the SD card are fixed so that they at least mention the defaults for Teensy 4.0/4.1. Preferably it would make the defaults for Teensy 4.x be the default since...
As far as I can tell, in the code printed, you are using the standard SPI pins (MOSI = 11, MISO = 12, SCLK = 13). Note the Teensy LC, 3.2, 3.5, and 3.6 allow you to use alternate SPI pins (MOSI = 7, MISO = 8, SCLK =...
Adafruit sells the following cable. It has a micro USB-b female cable that you plug in your power/computer to, and it has two USB-b male cables. The longer cable provides both data and power, and the shorter cable...
Recent versions of the Teensy arduino overlay now support reading ExFat files.
If you go into File Menu -> Examples -> Audio -> HardwareTesting -> SD_CARD -> SdCardTest there is an example test program.
Note in...
It really depends on what is used in the Teensy 3.2. As Paul said, the Teensy 4.0 is as close as he could get to being 3.2 compatible. If you only use the basic ports (first serial port, first I2C bus, first SPI bus,...
Well the 2 pairs of 13 pins tells me the board is likely designed for an original Raspberry Pi (later model Raspberry Pis now have 2 rows of 20 pins, but the first 13 pins are the same pinout as the previous pi models)....
FWIW, there appears to be two examples in the SmartMatrix library that use FastLed with Smartmatrix (FastLed_Functions and FastLed_Panel_Plus_Apa102). They run on my display once I select the proper shield and display...
I was playing with some SmartMatrix demos (such as Adafruit_Gfx), and the new compiler in the 1.58 beta releases throws some new warnings for the Smartmatrix library. I will post this over at the Smartmaxtrix forum as...
I had an hour or so available tonight, so took a quick look at the code, and in some places, I was able to replace the FastLED screen stuff with SmartLED.
But unfortunately, you use a lot of FastLED support that may...
In general, power banks that support 6 volts directly are fairly rare. The majority of power banks just support 5 volt USB power.
The new standard is USB C PD (power delivery), which can provide USB 5 volt power,...
I don't use FastLED but does it support the HUB75 displays that are often used for the larger RGB displays? A quick glance at the FastLED source seemed to indicate it mostly supported serial protocols like WS2812B...
If you aren't changing things all that often via I2C, another option is to use an I2C multiplexer. You would have to not connect pins 18/19 directly to the Teensy from the audio shield, and connect each board to a...
Yes. Witch Doctor sells the round eyes in their shop. As I've watched Witch Doctor over the years, I've wondered which eye they were using, but not to the point of using freeze frame to identify exactly what variant...
This isn't related to Teensys, but I've been watching this seasons Battlebots on Discovery+ (battlebots are 250 pound fighting robots). One of the stronger teams in the last few years has been the team Witch Doctor. ...
For accessing the micro SD card pins (42-47), you can use something like the microSd card sniffer from Sparkfun (https://www.sparkfun.com/products/9419). Here is the design as a PCB you can order from OSH park:...
You should be able to do it. I've done it several times. Note, pin 13 is also used for the Teensy 3.x audio board and for normal SPI traffic, so if you use either of those, you will see the LEDs blinking more as they...
You could also just solder wires to the VIN and VUSB holes in the PCB. You do have to cut the jumper.
On some of my Teensys, have put stacking headers on the Teensy. On the right side with VIN/GND/3.3v, I will...
Not quite. It depends on what you do. Many programs will work fine, but others won't. I wrote the following pages to look at the differences:
Unofficial Teensy Wiki, teensy differences:...
Now, I've never done anything with shift registers, but one thought would be to combine shift registers and analog inputs.
Each of the 8 rows has a shift register on it that multiplexes 8 inputs for the data value...
Note, there are two types of memory that you can solder to the underneath of a Teensy 4.1.
There is PSRAM and flash. Both can be accessed as main memory. These chips use the normal cache, so as long as you are just...
One method is to use MTP. There is a rather long thread about MTP:
https://forum.pjrc.com/threads/68139-Teensyduino-File-System-Integration-including-MTP-and-MSC?highlight=mtp
Basically, you run the sketch,...
I am a computer programmer that has worked on compilers for over 33 years. I have been working on the GNU GCC compiler for over 20. Outside of work, I tend to be known for my steampunk camera (see http://www.steampunkmike.org for more details).
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