11-06-2018, 04:08 PM
Hey,
I'm using an ATX PSU from my old computer in my RockPro64 powered home server. It is a really nice solution, as it has enough power reserves to run 4 hard disks, cooling fans etc., and even has the right connectors to them.
The only problem is turning the system on and off. As you may know, an ATX PSU does only provide 5V in the 'off' state, so in the case you want to really be able to turn off your system (also the fans and hard disks), you need a device that turns the PSU on and off for you.
That might be just a simple switch that connects the Power-Supply-On line with Ground. I used a transistor as a switch that is activated by an arduino that is running from the 5V standby line (and thus is always on). To tell the Arduino to switch the system on, I just use a push button. The advantage of this setup is that you can connect your Arduino through serial to the RockPro64 and instruct it to send a regular heartbeet signal. If this signal is interrupted (because the RockPro has powered off or crashed), the Arduino just shuts off the PSU and thus the fans and hard disks. Obviously, in my server it restarts everything as I want 24/7 online time. I have to say though, the RockPro is running 24/7 for the last couple of weeks and did so without as much as a hiccup.
PS: a nice thing about using an Arduino: you can use its PWM function to speed control many fans...
I'm using an ATX PSU from my old computer in my RockPro64 powered home server. It is a really nice solution, as it has enough power reserves to run 4 hard disks, cooling fans etc., and even has the right connectors to them.
The only problem is turning the system on and off. As you may know, an ATX PSU does only provide 5V in the 'off' state, so in the case you want to really be able to turn off your system (also the fans and hard disks), you need a device that turns the PSU on and off for you.
That might be just a simple switch that connects the Power-Supply-On line with Ground. I used a transistor as a switch that is activated by an arduino that is running from the 5V standby line (and thus is always on). To tell the Arduino to switch the system on, I just use a push button. The advantage of this setup is that you can connect your Arduino through serial to the RockPro64 and instruct it to send a regular heartbeet signal. If this signal is interrupted (because the RockPro has powered off or crashed), the Arduino just shuts off the PSU and thus the fans and hard disks. Obviously, in my server it restarts everything as I want 24/7 online time. I have to say though, the RockPro is running 24/7 for the last couple of weeks and did so without as much as a hiccup.
PS: a nice thing about using an Arduino: you can use its PWM function to speed control many fans...
(10-08-2018, 08:50 PM)ice2642 Wrote:(10-08-2018, 05:30 PM)dukla2000 Wrote: You do not have to use a PSU from Pine. I am using a PSU like this that I got from a fleabay shop.
Tkz for answer.
I am in doubt between rockpro64 or rock64.
On the one hand rockpro64 is stronger, on the other rock64 has more linux options to install.
It also appears that mali 450 is more mature in development.
Saving on the power source, it tastes rockpro64, but I did not want to spend much. the dollar is with the change very high in my country at the moment.
as I have here some PC ATX stops, it may be an option to use one which already decreases somewhat in the final price.