Using Arduino Uno as a USB-TTL serial link to Casio FX-850P ?

[Dan C]

(07-21-2022 10:12 AM)Maximilian Hohmann Wrote:  Hello,

(07-20-2022 04:19 PM)Dan C Wrote:  What do you think? Is it a possible way to do it?

There are very few things that have not been done before (with the exception of building your own gravitational wave detector maybe ;-) ) and it seems to be quite straightforward: http://retrowiki.es/viewtopic.php?t=100053601

Regards
Max

Ahh, cool project! So now i have to learn Spanish also
But this seems to be a little bit to fancy for my needs, i dont need to use the CPU on the Arduino, only the USB to TTL serial connection i think.

hmmm, but wait! They connect the Arduino I/O pins directly to the FX-850P port? Then i assume it's safe to use the 5V levels on the Arduino to the FX-850P?