August Thrust (Raspberry Flavor)
 

I'll start it off.

A little fun with raspberry pi 2 and a can of dust off. I ran out of cold pretty quick :)

Attachment 7692

Movin' on up :)

Once I figure this thing out I'll type up a how to for everyone to play with.

Made a nice little heat sink for the pi, ready for pawnage. Just need to find something to pour into it ;)

Weeeeeeeee!!!!

http://i464.photobucket.com/albums/r...psl2w2yyk9.png

http://i464.photobucket.com/albums/r...psnkhdj7d6.jpg

Picked up a couple cans of Power Duster and took her down to -20C.

Found the limit with 1.4v to core. Ready for vmod :)

Overclock:

force_turbo=1
arm_freq=1140
gpu_mem=50/50
core_freq=500
sdram_freq=500
over_voltage=8


http://i464.photobucket.com/albums/r...psaouiu8yo.jpg

http://i464.photobucket.com/albums/r...psnkrlf6km.jpg

http://i464.photobucket.com/albums/r...psqkdn7ofd.jpg

http://i464.photobucket.com/albums/r...psb7lasuls.jpg

That's a cool little project, looks like alot of fun and economical to boot.


http://vignette2.wikia.nocookie.net/...20110922190220

My fingers taste like chemicals and my head is still feeling a little dizzy..... :Dizzy:

Need better ventilation in here :shock:

Yeah, fun little project.

Searching for a vmod. If anyone finds a Raspberry Pi 2 vmod before me please post it up and share. ;)

Thanks :thumbsup:

u run out of voltage?

Think you could seal up your setup with a plexi case like this one? Maybe mitigate condensation issued?
http://www.amazon.com/Raspberry-Pi-B...+Heatsink+Kits

Think I'm tapped out at 1.4v

1.2v is default

https://www.raspberrypi.org/wp-conte...sue2.2_027.pdf

I didn't really plan on going subzero today. Just threw a little eraser around the arm cpu and went for it. 3 hours later started to get condensation issues. Next time I'll do a proper insulation job so hopefully it won't be an issue.

A power board would be handy here.

Found something:

by Zen1 » Sat Apr 11, 2015 8:08 pm

So, I've been working on this project for a while and I just wanted to share my results as there hasn't been much interest in overclocking the BCM2836. Today I managed to overclock my Pi 2 to 1500MHz and I just wanted to share to see if anyone else was interested. I removed L3 and soldered a lead on to the pad nearest C7 so that I could apply a separate core voltage. Using the software overvoltage setting of 8 only brings you up to 1.4V. I used an EVGA epower unit to provide a clean 1.66V. I used liquid nitrogen to cool the chip with a custom made CPU pot I designed. I had to use an extension cable for the SD card as it was getting too cold and I applied a heating pad to the bottom of the board to assist with keeping the RAM warm and defrosting the board. I found the chip coldbugs at -130C and refuses to boot under -90C. I found keeping the ram above 20C helped a lot with booting and stability.
So this is just a teaser to see if there is any other interest out there and to see if anybody knows of anyone who has gone further than this.

https://www.raspberrypi.org/forums/v...?f=29&t=107149

I'll look deeper into this tomorrow.