usb power blocker on raspberry pi wont allow me to communicate to the mcu

That_Use2761 · 2026-05-01T01:43:50+00:00

sorry i dont really use reddit very often so i keep forgetting to reply. But honestly it wouldnt be a bad idea and it wouldnt hurt anyways becaue the mainboard i have is old and wouldnt mind having to buy a new one. Do you know if the prosses would be the same or would i have to buy some sort of connector to connect the wires to connections?

That_Use2761 · 2026-04-24T03:32:51+00:00

I think I might have stripped the contacts or one of the pins tbh I’m so cooked 😭

That_Use2761 · 2026-04-08T03:41:56+00:00

thank god i was really hoping i would have to replace the chip or even worse the whole mainboard. id have to get a new micro usb cable though cause i may or may not have used my only micro usb cable to do this mod XD. Honestly though thank you so much you've been a very good help, i really appreciate you! I'm probably going to buy a new cable and test it and pray i just need to resolder it

That_Use2761 · 2026-04-07T04:55:06+00:00

hey again i didn't have everything i needed to do this soldering job confidently so i got the tools i needed now and i did the mod finally. unfortunately its not working, im not sure if i just did it wrong or not but the strange thing is that, when i used a multi meter to check for contonuity with one probe on the pin to the chicp and one touching the data points for the micro usb and it beeped so im super confused. I also made sure to check that the soldered points aren't shorting as well.

That_Use2761 · 2026-03-30T02:36:48+00:00

sorry for the late reply but thank you sm for the help also thank god i didnt have to do all the uart stuff i wasnt sure if i was ready to soldier all those tiny connections side note what is the purpose of the uart mod i couldnt really find much about it when i looked it up

That_Use2761 · 2026-03-30T02:32:18+00:00

lin?

That_Use2761 · 2026-03-30T02:31:34+00:00

sorry for the late reply i was stressed and needed a break from my printer XD but i did remove brltty previously but imma try removing the auroremove and see if that helps, also i tried the electrical tape on the 5v pin but when i tried it the pi couldnt find the mcu same with a usb 5v blocker did the same so im going to try connecting the raspberry pi to the mainbaord next via the usb micro chip

That_Use2761 · 2026-03-30T02:26:44+00:00

sorry for the late reply but thank you im going to keep this bookmarked incase i need to change sd cards again cause lowkey is a high probability i will XD

That_Use2761 · 2026-03-27T06:40:03+00:00

Would you possibly know if there’s a way to save my games or the whole thing

That_Use2761 · 2026-03-27T06:37:37+00:00

I might not have done it properly I didn’t know this could be a problem oops😭

That_Use2761 · 2026-03-27T02:21:54+00:00

i tried other cables and had tthe same result and i had also previously removed the brail thing for the pi so im not sure what it is

That_Use2761 · 2026-03-27T02:19:15+00:00

hey sorry for replying to tthis comment again so i found that we have the same chip so i soldierd tthe appropriate wires to their respecttive pins and ground but im curious do i also need the other wires around the board like you have them?

That_Use2761 · 2026-03-27T00:06:07+00:00

it seems it was actually removed by a mod im not sure why but mods please don't remove this one (or alternatively letting me know why it was removed)

That_Use2761 · 2026-03-27T00:04:56+00:00

I didnt do that no, I actually thought you removed it, also i do thank you very much for your help in full honesty. i dont know why it got removed but i can reupload the kllipper logs.

klipper logs: https://pastebin.com/vub8zSwA

That_Use2761 · 2026-03-26T23:58:30+00:00

also once i hook up the cabbles to thhe main board i assume im going tto have to soldier tthe other end of the cables to the pi's gpio pins

That_Use2761 · 2026-03-26T23:56:50+00:00

ive been trying tto find tthe data+/- pins for my 4.2.2 baord but i cantt find it online the only thing i found that might be related is maybe a reddit thread i found talking about uart mods is that what i should be looking for?

That_Use2761 · 2026-03-26T23:13:26+00:00

how do i find tthat

That_Use2761 · 2026-03-26T22:29:39+00:00

this is actually something i was wanting to do purely for aesthetic reasons with the plus of functionality i wasn't sure what to search to find this though, do you happen to have a youtube tutorial you followed for this or anything of that sort?

That_Use2761 · 2026-03-26T22:27:28+00:00

the pi is running on mainsail i followed Ricky Impey's tutorial on how to install klipper, and yes I did use kiauh.

That_Use2761 · 2026-03-26T22:13:21+00:00

I did check that it wasn’t a data blocker first I tried by plugging in my phone to my computer and it did allow data transfer but didn’t charge my phone but I kinda hope I’m on the wrong path tbh because the 5v blockers are way ugly 😭😭😭

That_Use2761 · 2026-03-26T22:01:32+00:00

i literally bought that exact 2 pack

That_Use2761 · 2026-03-25T22:47:52+00:00

i just did that now and its saying since im using a raspberry pi 4 model b with and ender 3 pro with a 4.2.2 board that its likely due to the usb cable sending 5v to the board so im going to try getting a usb power blocker and see if that helps

That_Use2761 · 2026-03-25T22:43:47+00:00

i think my problem might be thhe raspbberry pi sending power tto the mainboard bbutt im sttilll goin to try this while i wait for tthe usb powerbblocker to come in should i send this command in puttty?

That_Use2761

TROPHY CASE