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by energyi
Sat May 25, 2019 2:18 am
Forum: General discussion
Topic: Combine Rpi with other low cost device for massive computing power
Replies: 5
Views: 294

Re: Combine Rpi with other low cost device for massive computing power

New $25 hat for Rpi from Seeedstudio that relates to this thread:

https://www.seeedstudio.com/Grove-AI-HA ... -4026.html

I can't find and performance information for comparison to what has already been discussed.

Best,

energyi
by energyi
Wed May 22, 2019 12:15 am
Forum: General discussion
Topic: Combine Rpi with other low cost device for massive computing power
Replies: 5
Views: 294

Re: Combine Rpi with other low cost device for massive computing power

Thanks ejolson. Interesting perspective on training a model and running a model. Just trying to figure out this whole ecosystem for AI Machine Learning. I like the idea of using a Jetson Nano to train, then use a Rpi Coral TPU to run the inference model. Headless Zero W with a rpi camera and Coral T...
by energyi
Tue May 21, 2019 2:17 am
Forum: General discussion
Topic: Combine Rpi with other low cost device for massive computing power
Replies: 5
Views: 294

Re: Combine Rpi with other low cost device for massive computing power

Hadn't thought of other sbc's. Still with only USB2 Rpi is respectable.
by energyi
Tue May 21, 2019 12:41 am
Forum: General discussion
Topic: Combine Rpi with other low cost device for massive computing power
Replies: 5
Views: 294

Combine Rpi with other low cost device for massive computing power

This article compares different AI scenario performance including using a raspberry pi: https://blog.usejournal.com/google-coral-edge-tpu-vs-nvidia-jetson-nano-a-quick-deep-dive-into-edgeai-performance-bc7860b8d87a Adding the coral usb accelerator to a Rpi seems to be a very low cost, high powered a...
by energyi
Fri May 17, 2019 12:56 am
Forum: General discussion
Topic: Pi Zero W on sale at Microcenter
Replies: 4
Views: 294

Re: Pi Zero W on sale at Microcenter

Get at least one every time I'm near; on March 4th they cost $3.14. Wifi, bluetooth, HDMI, complete processing computer, usb, camera and video headers, gpio.....
by energyi
Tue May 14, 2019 3:43 pm
Forum: General discussion
Topic: Considering the Barium Supply Chain Hackers and Raspberry Pi
Replies: 14
Views: 544

Re: Considering the Barium Supply Chain Hackers and Raspberry Pi

Will5455 wrote a thoughtful post which I have bullet-ed takeaways, thanks: * don't do anything that requires hiding * binary blobs into the VC4 GPU during boot are suspect * one protection strategy is reproducible binary builds that are independently verified by multiple parties which are independen...
by energyi
Mon May 06, 2019 2:30 pm
Forum: General discussion
Topic: RPi to 4 channel audio amplifier
Replies: 7
Views: 9177

Re: RPi to 4 channel audio amplifier

Suptronics
by energyi
Sun May 05, 2019 2:35 pm
Forum: General discussion
Topic: Considering the Barium Supply Chain Hackers and Raspberry Pi
Replies: 14
Views: 544

Re: Considering the Barium Supply Chain Hackers and Raspberry Pi

Thanks for the reply on both the systems made from Raspbery Pi's and the systems at Raspberry Pi. Is there any particular software/firmware in the current builds using NOOBS or Raspian that could be suspect to supply chain hacking? Was mostly interested in whether Raspberry Pis are inherently safe a...
by energyi
Fri May 03, 2019 1:10 pm
Forum: General discussion
Topic: Considering the Barium Supply Chain Hackers and Raspberry Pi
Replies: 14
Views: 544

Considering the Barium Supply Chain Hackers and Raspberry Pi

Are raspberry systems inherently safer or less safe to this kind of supply chain hacking?

https://www.wired.com/story/barium-supp ... ackers/amp
by energyi
Sat Apr 20, 2019 3:46 pm
Forum: General discussion
Topic: Solution for bad HDMI
Replies: 5
Views: 382

Re: Solution for bad HDMI

Another options was to get an 3.5" LCD touch screen, which I did and it worked. Came with a case, which is good except for one thing. I broke two, yes two miniSD cards when putting the raspberry pi and the case together, not noticing that there is no clearance for a raspberry pi with the miniSD card...
by energyi
Sun Mar 17, 2019 2:02 am
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 1098

Re: Zero clusters? Pi day deals

Is a video wall of multiple HDMI frameless monitors an application for a cluster of pi zeros?
by energyi
Sat Mar 16, 2019 1:41 pm
Forum: Teaching and learning resources
Topic: Super-cheap Computing Cluster for Learning
Replies: 41
Views: 29903

Re: Super-cheap Computing Cluster for Learning

Great thread ejolson et al. Thanks.
by energyi
Sat Mar 16, 2019 1:02 am
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 1098

Re: Zero clusters? Pi day deals

Example of a super-cheap pi-zero cluster : https://www.raspberrypi.org/forums/viewtopic.php?f=49&t=199994 (and links therein) That is one of the most amazing threads I have read on this board, +1 year long and full of great instructions and knowledge by ejolson and others. " the code developed for ...
by energyi
Sat Mar 16, 2019 12:25 am
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 1098

Re: Zero clusters? Pi day deals

Thanks mic_s, good answer.

energyi
by energyi
Fri Mar 15, 2019 8:50 pm
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 1098

Re: Zero clusters? Pi day deals

Thanks thagrol. me gusto mucho.

Usecase for individual low power SBC's clustered such?
by energyi
Fri Mar 15, 2019 6:23 pm
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 1098

Zero clusters? Pi day deals

Anyone done a Pi Zero cluster? Not for power, but to learn/test clusters. Any other good usecase for this?

Yes, addicted to pi. Microcenter deal till the 16 th, less than $11. Zero w, case and 16gig card.

Energyi
FJIMG_20190315_121602-768x432.jpg
FJIMG_20190315_121602-768x432.jpg (72.79 KiB) Viewed 1098 times
by energyi
Wed Feb 13, 2019 10:05 pm
Forum: General discussion
Topic: Buffer Youtube on microSD
Replies: 3
Views: 195

Re: Buffer Youtube on microSD

Thanks for the suggestions. I like the idea of saving the video's then playing. Keeps them from disappearing.

Any other ideas of using the sd card for buffering? Thanks for the discussion.
by energyi
Wed Feb 13, 2019 12:24 am
Forum: General discussion
Topic: Buffer Youtube on microSD
Replies: 3
Views: 195

Buffer Youtube on microSD

This excellent video on Explaining Computers shows how Raspberry Pi B+ handles video, playing a 1080P file just fine, but struggling with youtube: https://youtu.be/U5Y6XwFyU2s?t=174 (that link is timecoded for Rpi content, feel free to watch all sbc comparisons if interested) Is there an easy way to...
by energyi
Thu Feb 07, 2019 3:39 pm
Forum: General discussion
Topic: Raspberry PI NAS
Replies: 7
Views: 1163

Re: Raspberry PI NAS

by energyi
Thu Jan 31, 2019 7:01 pm
Forum: General discussion
Topic: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)
Replies: 101
Views: 8168

Re: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)

sakaki, thanks for the bench test results from roylongbottom. I love this comparison for Livermore Loops: "This is 21 times faster than the Cray 1 supercomputer." And appreciate the note on restrictions.
by energyi
Thu Jan 31, 2019 6:51 pm
Forum: Python
Topic: scrolling message with status
Replies: 4
Views: 310

Re: scrolling message with status

Help you with what?
by energyi
Tue Jan 29, 2019 6:02 pm
Forum: General discussion
Topic: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)
Replies: 101
Views: 8168

Re: Easily run 64-bit Debian Stretch packages on a Raspbian system: new RPi3 demo image released (systemd-nspawn, LXDE)

Thanks sakaki! Any bench testing results to help the uneducated on reasons to try the 64 bit bootable image on GitHub?
by energyi
Tue Jan 29, 2019 5:53 pm
Forum: General discussion
Topic: Solution for bad HDMI
Replies: 5
Views: 382

Re: Solution for bad HDMI

jamesh wrote:
Mon Jan 28, 2019 9:54 pm
sdtv_mode=0x12
Thanks jamesh, tried 0x10 and got pixelation for my 720p monitor. No worries works well enough without for my set up. Only the mouse arrow seems to flicker.
by energyi
Mon Jan 28, 2019 9:54 pm
Forum: General discussion
Topic: How many pieces of pi are too many?
Replies: 72
Views: 2484

How many pieces of pi are too many?

how many pi sm.jpg
how many pi sm.jpg (190.15 KiB) Viewed 1209 times
17?
by energyi
Mon Jan 28, 2019 9:34 pm
Forum: General discussion
Topic: Solution for bad HDMI
Replies: 5
Views: 382

Solution for bad HDMI

Destroyed my onboard HDMI on a 3B+ (don't ask). The 3.5 mm audio/composite video out on the board saved me. My audio/video cable had red and yellow reversed, found by using an ohm meter. Edited the config.txt file in the /boot partition using nano, added: hdmi_ignore_hotplug=1 Changed this line #sdt...

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