Recent content by MaltWhiskey

The string is not the problem (i know it doesn’t crash tested extensively with much larger data before). But just to eliminate the “noise” i replaced the yield with just read write. So for sure the Serial Interrupt Must be interfering. I’m not writing anything over Serial1, just reading (empty...

I have an esp8266 connected to the teensy and i telnet into it. And if i paste over 400 characters the driver crashes. The teensy uses Serial1 to read/write to the esp. https://github.com/MaltWhiskey/Mega-Cube/blob/master/Software/LED%20Display/src/main.cpp void setup() { // Start with...

Is it possible something in HardwareSerial is messing with the interrupts? The driver crashes when i send 400 characters over Serial1. It hangs in _waitUpdateAsyncComplete() indicating that somehow an interrupt is missed and _dma_state isn't set back to ILI9341_T4_DMA_IDLE. I put up an issue...

Im using visual studio code to build my project, but some parts i just want to see what the compiler generated. There are “start debugging” options in the menu, but it doesn’t do anything. (Need to connect some way other than usb?) But i can do without debugging, i just want to view the assembly...

You upload the board with assembly instructions. The components to use are in the assembly file. I used jlcpcb (in the assembly file are their components id’s) Some through hole / connectors you need to solder yourself. But the smd components will all be placed. I ordered 5 boards so i have 4...

Can i have a look at your code somewhere? I’m interested in the communication part between teensy and esp.

Thanks for looking at the video :) Not sure if it is homepage blog material, since i hardly show off the teensy. If i didn’t have to wait for the leds to refresh i could run my animations @1350 fps so that show what a beast the teensy4 really is :cool:

I made a build video for my big 16x16x16 led cube (using adressable leds) the video is on youtube: https://youtu.be/ciaFar8nfHc This is nothing like the old tech rgb leds with multiplexing. Full power @ 1200 Watt and rendering/displaying frames arround 180fps….

Well nobody able to shed some advice or point to a comparable project? I probably will start on this in about 6 months so in the meantime all advice is appreciated…

Thanks :) Code and pcb is on github, but i don’t recommend soldering something this size :cool:

I made this thing of beauty https://youtu.be/xidPiL3ZEh8 There is a teensy 4.0 running the show with a custom pcb that outputs to 32 channels to run all leds. On that pcb is also I2C to a touch screen (sd card, touch input and tft screen all separate I2C devices) the frame rate is about 179...

You can still buy tlc5940 on AliExpress. They may be fake, but work still the same..

I’m not sure if this will work. But with flexio + pll + dma i run 4096 leds & 178 fps. This uses 3 pins, 1 for data to external 32bit shifter. You can output to more than one bit, so you can try to output 8 bits. There are 3 flexio, but only 1 and 2 can use dma. So that maybe thats 16 bits...

Just confirming sd card working by bridgeing r1,r2 and r3. I left vcc on 5v. Seems like those resistors are too high for the 3.3v signals from the teensy 4.0 i used.

Good to hear it is working now! So you ended up using my Display class ? Or still on the original library? Anyway took some time to make it all a bit nicer, nice fade in and out, sparkling fireworks etc. Starting to look like a real work of art. Everything non blocking, so hopefully I can work...