Thanks, Mgrouch, I had already seen your solution. But it is interesting in the case of using only a self-powered HUB, but which does not need to operate with a system that includes the auto-off button for everything, as is the case in the GEDAD MCS board.
This below is my assembly diagram.
https://drive.google.com/file/d/1RghxzVS...sp=sharing
So when the switch is turned off, the system does not turn off because it is powered by the USB, but if I switch off the power on the USB of the HUB, the SSD turns off, which is not good causing an unsafe system shutdown.
Solutions ??
This below is my assembly diagram.
https://drive.google.com/file/d/1RghxzVS...sp=sharing
So when the switch is turned off, the system does not turn off because it is powered by the USB, but if I switch off the power on the USB of the HUB, the SSD turns off, which is not good causing an unsafe system shutdown.
Solutions ??
(2020-09-25, 10:35 PM)mgrouch Wrote:(2020-09-25, 03:22 PM)niklun Wrote: Good morning,
finally I have assembled everything: raspberry pi 4, hat2, MCS with openplotter2.
All up-to-date and working. Lastly I installed a 240 gb external non self-powered SSD connected to usb3 with openplotter and eliminated the sd card. But due to the voltage drop that OP detects .... I plugged in a self-powered HUB and consequently attached the SSD to the HUB. I got the power supply from the GND pin and from the +12 enable pin so that when the system is turned on, the HUB is also powered. BUT here's the problem: at shutdown that MCS should do it doesn't happen until I turn off the power to the HUB.
Solution????
Thank you
I think it’s backfired of power from usb hub. You can
cover one pin with electrical tape in the USB cable.
Here is the picture
Comet 1000 - Openplotter under construction