the heated desoldering pump paul mentioned is brilliant, available in the eu:
https://www.amazon.de/Velleman-Entl%C3%B6tpumpe-Entl%C3%B6tkolben-230V-VTDESOL3/dp/B005HCQRQ2/ref=sr_1_1?dchild=1&keywords=VTDESOL3&qid=1591006122&sr=8-1
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 :)
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.
so you might wanna thing about how you want to solve your task.
this is completly doable with a...