Last edited by TheLastMillennial on 29 May 2018 05:54:32 pm; edited 1 time in total
Last night I cut open a USB cable so I could get to the wires on it. I connected the positive and negative ends to a 5v .12A fan and plugged it into my calculator. Unfortunately, It refused to turn on so I turned off the calculator and plugged it back in and the fan turned on for 3 seconds or so but then turned off. I assume this is because the fan has no data ports so the calculator doesn't really know it's there?
To try and keep the fan running, I wrote a very complex program that took all my skill as a programmer to make:
Code:
Repeat getKey
Send(L1
End
This successfully kept the calculator supplying power to the fan long enough to keep it on constantly! I now have a weak fan connected to my calculator!
I'm sure once the USB docs come out I'll be able to connect bigger and better fans, but for now, this is the best I can do.
Here's a new video and an old one before I had stuff soldered.
Oh, this looks really fun, and it might actually be useful in some cases, when you didn't bring your laptop to class but a calculator instead! I'm curious as well if the calc could power a bigger fan, but I guess not, actually.
Last edited by TheLastMillennial on 29 May 2018 06:41:44 pm; edited 1 time in total
PT_: I hope it can too, I guess we'll have to wait until the USB is documented.
EDIT: Sorry Mateo, would 'until a driver is made.' be more appropriate?
SM84CE: I changed it to that on my calculator, thanks for reminding me to change it in my post too!
I did some further testing of the TI-84 CE USB port:
I am currently testing variations of the program where power is more stable.
Later when using a USB keyboard, I also was able to type special characters and access a glitched version of the f5 program editor menu on the homescreen.
Didn't like the way my hand looked on camera, so I wore gloves. Also, the explanations are just for demonstration as part of a project.
I came to that conclusion too, I really liked how your video explains exactly what's going on electrically! Now we just need to get more power consistently to the USB port.
I'll leave a link to your video on mine later.
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