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any updates on this highly interesting implementation?

fyi: having no issues with 10.15.5 and my teensy 4.1. so far...

the heated desoldering pump paul mentioned is brilliant, available in the eu:
...

i am using visual studio with platform io, works perfect.

teensy 4.1 is fully supported by platformio since about a week:
https://github.com/platformio/platform-teensy/releases

cheers

afaik. i2c can also used at higher speeds ... that might improve your display speed:
https://www.arduino.cc/en/Reference/WireSetClock

but SPI will always be way faster...

you can also offload adat generation with theses chips:

encoder: https://cabintechglobal.com/v1401
decoder: https://cabintechglobal.com/v1402

used them once and worked great

just noticed your aliexpress link is broken.

i just ordered this one: https://de.aliexpress.com/item/4000218445956.html?spm=a2g0s.9042311.0.0.27424c4d3xopP4
and hope it will work :)

isnt AudioMemory for increasing buffer size?

https://github.com/PaulStoffregen/Audio/blob/master/examples/Tutorial/Part_1_02_Hardware_Test/Part_1_02_Hardware_Test.ino#L37

i am using the default 1.52 from the download page with catalina just perfectly...just everything a little slow

trying the new build now

also have a look at these example network stuff: https://github.com/vjmuzik/NativeEthernet/tree/master/examples

thats code for the teensy 4.1

using a teeny/arduino board aims for solving problems at a lower level...

means things you wanna accomplish are quite difficult compared to a 20$ openwrt router with linux and some bash script.
...

cgi seems to mean that you want todo an HTTP request ? get that response..extract the image and then send it out via tcp again..?

new official 1.52 is here... https://www.pjrc.com/teensy/td_download.html

yes since rev c its in there:
20115

is there any update coming to the osh pcb for the CS42448 to use it with an T 4.1?