I’m still fairly new to the hobby, in fact I just “finished” my first light saber today. But I’m running into a small issue. When I flip the kill switch from off to on the proffieboard won’t boot into proffieOS.
However if I remove the board from the chassis with all the same wires connected it will boot into proffieOS.
Furthermore if I boot into proffieOS and then slide the proffieboard back into the position in the chassis, it he board will continue to run proffieOS if I slide the board back into the chassis. the board will continue to function as normal. once the kill switch
There is a lot of things that could be going on.
One possibility is that something is pushing on the boot button.
If boot is pressed during powerup, the board will go into bootloader mode, but if you press boot after it’s booted up, nothing will happen.
You could check if it’s in bootloader mode by taking it out of the chassis while in the bad state and hooking it up to a computer. If it’s in bootloader mode it will show up as “STM32 BOOTLOADER”.
I just tried it and I don’t even think my computer recognizes the device when it’s in the bad state. there isn’t a audio notification when plug it in. normally I get one when I plug in the proffie board
the other interesting thing is that the Bluetooth device still powers on even in the bad state. if I hold the boot button while powering it up then it wont light up.
another thing worth mentioning is that it is all wired from the bottom
If it’s not the boot button, then we’re going to need a lot more pictures and stuff to try to find the problem. It almost has to be some kind of short somewhere…
by some stroke of luck I might have figured out the problem. the bluetooth positive wire broke off the pin from the proffie board and now the board boots properly (without the bluetooth) of course.
do you know if there any other pins the bluetooth power line could attach to?
BT+ should generally attach to SD_VDD or 3.3v
Have you added a capacitor between 3.3v and GND?
no, both 3.3v and GND are free
Where did you have it connected before?
SD_VDD along with an OLED screen
So I guess reconnect the wire and add the capacitor and see if it works better.