No Voltage on Octopus V1.1 J26 pins?
hey guys I powered my VC4 for the first time but my Pi does not recieve a voltage from the Octopus J26 Pins what could be the reason for that? Can anyone help me out?
if you need any other info, let me know 😉
39 Replies
Use a multimeter to see how far the voltage gets. And drop a pic of your wiring
did you check that you are not getting any voltage from the cables with a multimeter? If yes
Did you rules out the cable by checking the pins on the octopus?
does the pi turn on if you connect the pins to another 5v source etc
You need to describe what you have tried and what the results were
otherwise its very hard to help you with this
I found out some of the pins seem to have 5 volt when I measure them, but the pi only turns on for 2-3 seconds and then turns off again...
I measured at the pins...
also all fan header pins are dead except the most upper one...
if I conntect the pi to own power source it boots up normally, but the octopus is not recognized by RatOS...
I think the board died, but I dont know why... I handeled it with care and was wearing ESD bracelet...
Use two ground and two power pins from the octopus to the raspi. One doesn't carry enough current
I don't know what all the pi is powering, but I see a few 'extra' usb cables
its the toolboard, the beacon probe and a connection between the octopus and the pi...
I dont think that will fix my problem... I have powered the pi seperately as I said, but RatOS does not even recognize the board and manual flashing also failed
I think the board is cooked tbh
mm, forgot that part yeah
Could try disconnecting everything from the octopus except the pi and see if it powers up and flashes
I'll try that monday, the printer is at my workplace... I'll let you know if it worked or not
but I mean I had flashed the board before I wired everything up...
so I really dont understand why it is like this now...
somehow connecting it to the power supply fried it I think but my wiring is correct, I have checked everything so many times
Could have plugged/unplugged something while it was powered. I don't know how well protected the board is from voltage spikes
youll have a hard try frying a board from just static electricity. either it was a bad board from the start just waiting to die or something got shorted or had the polarity reversed.
im guessing you have flashed the board already? Can you try reflashing it through ither the pi or by using the sd card method?
yes the board was flashed and working
but it wont take anything now
not via RatOS and not manual
it just fails
the board is fried
I am just trying to find out how it happened
in my head I did nothing wrong
so I dont understand
I am also not new to handeling stuff like that
sometimes you just get a bad board
and my wiring is definitly correct I have checked a million times by now
nothing you can do about it
I read online that ppl are very dissatisfied with the quality of BTT boards
orly?
yes
I am not the first one
ive been using em for years and have had no issues
I have had them too
but apperently a lot of ppl are complaining about boards die for no reason
i mean even if you have a 0.1% failiure rate you will send quite a few bad boards when you are as big as btt
I just really hope it did not fry the drivers aswell
and maybe I get a replacement from RR? I dont know yet
I was really careful... I really dont think it was my fault handeling it
id email em. Say exactly what happened
ye I did
waiting on answer
nothing to do then but chill a bit
its just weird because it was working
I had flashed it successfully
and RatOS recognized it
but yeah if btt had some serious issues with reliability youd see many many more posts about it
but then I wire everything up and bam its dead
you are the first one ive seen on here for example
they have issue with boards dieing for no reason and also fail safe not working at all
components would be fried before any fuse blows and stuff like that
see the above message again
ye maybe it was me but I dont understand why
in my understanding I did nothing that could fry a board like that...
and I have handled stuff like that for over 15yrs
I soldered my first electronics at age of 13
dead on arrival is a thing
widespread amongst all electronics
but then why would it have been good to flash? when it only got power via the Pi (with the jumper set for that)
is that a thing?
yes
hmm maybe thats what happened then idk...
I am just a person, that would rather start to question my whole existence than question a board manufacturer
LMAO
usually between 0.2 and 0.5% or something like that 😄
if it was me I wanna know what I did wrong
I dont care about the 65 bucks honestly
I just wanna know what happened
prob nothing 🙂
as i said the most surefire way to kill a board is shorting it, reversing its polarity or pushing voltage where it doesnt belong
if you did none of these things then well
unless the wiring shown in the picture above is doing any of that I did not do that, yes hahah (I didnt change anything yet, so I can maybe still find whats wrong)
I even did use compressed air to remove any dust, to be sure there is nothing that could short...
and the whole machine didnt see power until friday... the board and pi was only powered once on my desk to flash it and everything worked fine back there...