so i wanted to use the usb port of the ti 84 plus CE from the inside so i tore off the metal cover and bent the pins in inward and soldered to them. the port did work with an otg adapter, and my program is calling usb. So i soldered gnd and id pin together, vbus is behaving weirdly. i get 0.0 mv if i measure alone but if i short d- and vbus i do get 5v. d+ has 3.3v and d- 1.7V. i did notice something weird when i did get voltage on vbus and it was 2.2v, and gnd was behaving weirdly and had 0.8 v difference to test point ground near the battery, and d- and d+ had some weird 0.6V. whats going on here? the cables arent shorting, and even if no cables are connected i just get weird voltages and nothing is working, the esp 32 c3 never shows any power on light. i tried it with the 5v and gnd pins on the esp itself and over a a cut open usb c cable.
  
Register to Join the Conversation
Have your own thoughts to add to this or any other topic? Want to ask a question, offer a suggestion, share your own programs and projects, upload a file to the file archives, get help with calculator and computer programming, or simply chat with like-minded coders and tech and calculator enthusiasts via the site-wide AJAX SAX widget? Registration for a free Cemetech account only takes a minute.

» Go to Registration page
Page 1 of 1
» All times are UTC - 5 Hours
 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

 

Advertisement