Parallella, Raspberry Pi, FPGA & All That Stuff

PorkyPies
PorkyPies
Joined: 27 Apr 16
Posts: 199
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RAC: 945

My Pies passed 250k today.

My Pies passed 250k today. Woohoo!

I had another Pi3 turn off its power led when plugged into the Anker powerport. Put it and the possibly faulty one (it's power led was blinking) on official 2a power adapter each and they both seem happy now.

Claggy
Claggy
Joined: 29 Dec 06
Posts: 560
Credit: 2699403
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Browndeer Technology have

Browndeer Technology have tweeted:

Quote:
Added more code examples including 2D FFT and N-Body using threaded MPI.


https://twitter.com/browndeertech/status/751025474504130560

http://www.browndeertechnology.com/resources_epiphany_developer_coprthr2.htm

Does this increase the likelihood of an Epiphany coprocessor accelerated app being possible?

Claggy

KF7IJZ
KF7IJZ
Joined: 27 Feb 15
Posts: 110
Credit: 6108311
RAC: 0

RE: My Pies passed 250k

Quote:

My Pies passed 250k today. Woohoo!

I had another Pi3 turn off its power led when plugged into the Anker powerport. Put it and the possibly faulty one (it's power led was blinking) on official 2a power adapter each and they both seem happy now.

Congrats!

That is so weird - I have never had a problem w/ the Anker units. Please let us know if you learn any more!

My YouTube Channel: https://www.youtube.com/user/KF7IJZ
Follow me on Twitter: https://twitter.com/KF7IJZ

KF7IJZ
KF7IJZ
Joined: 27 Feb 15
Posts: 110
Credit: 6108311
RAC: 0

We have a new member in the

We have a new member in the team today (Welcome Darian), but he joined with an Intel PC.

Hard question for the team - do we kick people out who aren't using Raspberry Pis? I hate to turn someone away, but everyone on this team is dedicated to using Pis to deliver work units.

What are the team's thoughts?

My YouTube Channel: https://www.youtube.com/user/KF7IJZ
Follow me on Twitter: https://twitter.com/KF7IJZ

PorkyPies
PorkyPies
Joined: 27 Apr 16
Posts: 199
Credit: 33740629
RAC: 945

RE: Congrats! That is so

Quote:

Congrats!

That is so weird - I have never had a problem w/ the Anker units. Please let us know if you learn any more!


Thanks.

I had a 3rd Pi that was plugged into the Anker also start blinking its power LED. I have put the cheap multi-port charger on as I haven't got enough power adapters for all the Pi3's. So far working okay. I think the problem is the Anker raises the voltage and that confuses the Pi.

Anonymous

Here is my second entry into

Here is my second entry into Pi/Odroid cooling. The PiVE/wind tunnels that I made earlier were effective at reducing the operational temperatures of the Pi3 however they were a major inconvenience when it came to removing the boards or cleaning the filters - lots of connectors and nuts/bolts had to be removed. I believe I have solved this problem of maintenance with the following design.

Allow me to introduce the QuBE:




Showing the filter slid out - waiting on material.


Rear access panel slid to right.



A Pi or Odroid-C2 will mount to the vertical plate and engage top and bottom rails.

The following image shows how an individual Pi/Odroid can slide in and out on a vertical mount. Just need to disconnect the network cable and power cable.

The wires exit through the bottom of the cage and to the rear clearing the filter mount as shown.


The QuBE will accommodate a Pi2/3 or Odroid-C2 in any combination of 3. No other Odroid models please. Their board layouts are not compatible. The are 4 rails but only 3 SBCs (small board computer) can be accommodated. The SBCs must insert with USB ports facing outward but can be oriented GPIO pins up or down. Hence the 4th rail allows the vertical board mount to be flipped 180. The fan is a 12Volt LED fan powered from a separate source. There is adequate space to accommodate USB devices and Ethernet should you not want to go the WIFI route. The filter is at the base of the unit and is easily removed - it slides out - for cleaning.

If anyone is interested in the cad/stl files I will gladly provide but I need to give you the bad news: total continuous print time is 49 hours.

I have not yet powered it up because I am waiting on some longer bolts, filter material and Pi(s)/Odroids. I will do the fan wiring and test it this afternoon.

The entire built is here

Anonymous

Wired up the 12V Fan w/LEDS

Wired up the 12V Fan w/LEDS and placed a single Odroid-C2 in the cage and ran power for both the fan, Odroid, and network. Here is how it looks:

Cables are the fan and the Odroid's power cable.

Everything powered up with CAT 5 cable in place

Door closed with cables exiting the bottom rear. Other 3 sides are open for adequate air flow.

Top view. Nice nite light. Pretty quiet.

With one Odroid-C2 and the standard heat sink the temp is holding at 58C. This is 10C higher then when I had a 5V fan hovering a couple of centimeters above the heat sink. I believe I have enough room between the slots to add the 5V fan should it become necessary. Remember this is plastic so if it gets too hot I will know.

KF7IJZ
KF7IJZ
Joined: 27 Feb 15
Posts: 110
Credit: 6108311
RAC: 0

RE: Remember this is

Quote:
Remember this is plastic so if it gets too hot I will know.

You should invest in some of the coffee filament and then it will act like geek potpourri with the heat of science!

My YouTube Channel: https://www.youtube.com/user/KF7IJZ
Follow me on Twitter: https://twitter.com/KF7IJZ

Anonymous

RE: RE: Remember this is

Quote:
Quote:
Remember this is plastic so if it gets too hot I will know.

You should invest in some of the coffee filament and then it will act like geek potpourri with the heat of science!

:>) I would much prefer that it not trigger the potpourri effect. Even with "plain" filament there will be some aromatherapy provided should things go wrong.

bibiwood
bibiwood
Joined: 24 May 16
Posts: 5
Credit: 59625
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RE: RE: That looks

Quote:
Quote:
That looks awesome! Can you share the source of your fans please?

You can find them on ebay and other sites. Things to look for: 5V, CFM (how much air it moves), and plug. The one that I used and the one pictured in the above link need to have the plug removed and replaced even though my picture shows I used the original plug. I noticed the original plug is not a perfect match for the header pins so I cut it off and used a different plug type. Note you will need pins and a crimper or buy ready-made cables from the same site and solder to the existing fan wires after cutting of the original connector.

Do you even need a 5V fan ? I bought a Noctua fan at a yard sale for 1€ and it works perfectly on 5V and is absolutely silent.
Well it would not be enough if you add a filter, but it works perfectly like this to keep my Pi 2 cool.
This is my ghetto setup running under my desk:

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