I always assumed that, without breakout board, you either access SD sockets or USB port. So fine with me.They could at least allow access to the 2nd USB port pads when the card isn't present.
I always assumed that, without breakout board, you either access SD sockets or USB port. So fine with me.They could at least allow access to the 2nd USB port pads when the card isn't present.
As 6 extra IO pins with special functions may be more valuable to me than SD access...
Are there any SMD parts in the area between the USB-Host pads and SD pads ?
With pogo pins, the steel spring is encased in a steel tube with nickle & gold plating. Most of the electrical conduction is probably through the plating materials on the surface, partly because they're lower resistance than steel, partly because skin effect at high frequency.
Has anyone experience with springs like this: https://www.mtc.de/en/emc-metal-parts/smd-contact-springs or knows where I can buy some?
Are they OK for manual soldering?
So it might be possible to attach a small PCB...
Is it possible to use I2S1 with a external MCLK? (MCLK from an other chip)? (Is MCLK needed at all?)
my question was, wether teensy (as slave) needs the mclk or not
the other question was, if it is possible to use I2S1 with external mclk (as master, perhaps)
Boards arrived, 0.9mm is way too much for P50. Luckyly I have other Pogo-pins in stock which fit better, very tight. I think they are called "P75"Not sure if correct, but if P50-J1 Pogo-Pins, I assume 0.9mm drills for the pins (?)
Morning All
Over on the ILI9341_t3n thread I posted a test code to generate what is known as a Buddhabrot - kind of a negative fractal, https://forum.pjrc.com/threads/3875...-(ILI9341_t3n)?p=201873&viewfull=1#post201873. The code was adapted from something I found on the web to run on the T4. Note it should run on a T3.5/3.6 as well. Here is a sample image:
Wanted to show an actual application using a T4. It does run pretty quick and the limitation is the max size of the pixel (240,240).
I posted a test code to generate what is known as a Buddhabrot
@defragster
Glad you got your ILI9341 finally working. Teensy64 coming in handy now.
Never thought about it before but it does kind of look like a CAT scan..
Nice comparison. Since I only have one display did want to keep moving it around. Glad you did the performance analysis. More will follow on the Buddhabrot - been reading up on it. Its actually easier to do the graphics on the Teensy than on windows .
Until the reset it would not run again. I found this - and repeated to the same effect and need for 15s reset before proper HEX would run again.View attachment Buddabrot.ino
Building requires KurtE libs … - here is elf/hex/sym/lst and all from my build dir :: View attachment bb15sReset.zip
libs are KurtE :: SPIN and ILI9341_t3n
tft.drawNumber(bailout, 240, 5);
tft.drawNumber(exposures, 240, 25);
tft.drawNumber(exposures - [COLOR="#FF0000"]Dexposures, 240, 45);[/COLOR]
tft.drawString("bailout: ", 0, 0);
tft.drawNumber(bailout, 240, 0);