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by bullen
Thu Mar 08, 2018 2:55 pm
Forum: General discussion
Topic: Pogo pins and 2x hat standard [Solved]
Replies: 8
Views: 2056

Re: Pogo pins and 2x hat standard

Ok the second order of pogo pins came back even more wrong, be careful in ordering these. This is the standard for Raspberry Pi and should probably exist in more lengths than 8mm. http://move.rupy.se/file/pogo4.png I'm going to give this a pause now and buy a better soldering iron, time usually solv...
by bullen
Tue Mar 06, 2018 12:07 pm
Forum: General discussion
Topic: Pogo pins and 2x hat standard [Solved]
Replies: 8
Views: 2056

Re: Pogo pins and 2x hat standard

Ok, these fit! Argh, no they don't work... since the top spring pin is same diameter as the bottom pin, it needs to be bigger! http://move.rupy.se/file/pogo.jpg Also the length came back wrong, you need to ignore the instructions and order as if PGTHXXX where XXX = C not A. So for me that means PGT...
by bullen
Sun Feb 18, 2018 8:55 pm
Forum: General discussion
Topic: Next Raspbian When?
Replies: 11
Views: 1861

Re: Next Raspbian When?

Ok, only asking because I need the firmware with polophony that sounds ok from jdb and to upgrade makes rapbian unstable so I have to wait for the official release, also the enabeling of the sshd nightmare is not something I want to do more than one more time in my life. The next release is make it ...
by bullen
Sun Feb 18, 2018 7:49 pm
Forum: General discussion
Topic: Next Raspbian When?
Replies: 11
Views: 1861

Next Raspbian When?

Is there some plan to when official Raspbian is released here: https://www.raspberrypi.org/downloads/raspbian/?
by bullen
Sat Feb 10, 2018 1:55 pm
Forum: General discussion
Topic: Pogo pins and 2x hat standard [Solved]
Replies: 8
Views: 2056

Re: Pogo pins and 2x hat standard

https://www.aliexpress.com/item/100pcs- ... 16758.html

I ordered the PGTH450, we'll see... if they work it will be interesting to unsolder the headers! :S
by bullen
Sat Feb 10, 2018 12:35 am
Forum: General discussion
Topic: Color LCD + Joystick/3 Button Zero HAT
Replies: 0
Views: 368

Color LCD + Joystick/3 Button Zero HAT

https://www.ebay.com/itm/128x128-1-44in ... 3300974220

Image

Just found this, dunno if it's good; specifically it uses SPI (instead of I2C) and I have a hard time finding info on framerate.
by bullen
Fri Feb 09, 2018 2:18 pm
Forum: General discussion
Topic: Pogo pins and 2x hat standard [Solved]
Replies: 8
Views: 2056

Pogo pins and 2x hat standard [Solved]

Hi, what is the standard diameter for the GPIO holes? Is there a standard? Edit: 1mm apparently! Finally we are getting pogo pins for hats: https://shop.pimoroni.com/collections/new-products/products/pogo-a-go-go-solderless-gpio-pogo-pins (edit: these are not ideal, 0.9mm foot makes them wobble) But...
by bullen
Wed Feb 07, 2018 5:15 pm
Forum: Advanced users
Topic: Analogue audio redux
Replies: 78
Views: 27451

Re: Analogue audio redux

Thx, when is the next official raspbian release for download planned?
by bullen
Mon Jan 22, 2018 12:56 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

Much more than the CPU is a stretch, but I know it's a challenge: Rx LnaBoost Off, higher bands 10.8mA LnaBoost On, higher bands 11.5mA Lower bands 12.1mA Tx RFOP = +20 dBm, on PA_BOOST 120mA RFOP = +17 dBm, on PA_BOOST 87mA RFOP = +13 dBm, on RFO_LF/HF pin 29mA RFOP = + 7 dBm, on RFO_LF/HF pin 20mA...
by bullen
Mon Jan 22, 2018 12:15 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

http://radiomesh.org/LoRaPiPortable.png http://radiomesh.org It is a new distributed P2P radio internet on top of LoRa with frequency hopping. The reason for using a 2600mAh pack is it has the same dimension as the zero and it's cheap. Volumes on DIY parts are crucial to get price down. Always on i...
by bullen
Sun Jan 21, 2018 4:40 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

That's a wide range, you want in? I would appreciate if we took the time to write out acronyms in general, and non obvious ones in particular.
by bullen
Sun Jan 21, 2018 1:54 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

@mikerr IME the zero lasts ~4 hours... that's one order of magnitude! thx for the lead though, I will follow it... I'm doing radio that needs 100% uptime at reception and cannot work with bootup latencies. @6by9 Ok, only suspend is possible, not simply turning off the part of GPU that handles graphi...
by bullen
Sun Jan 21, 2018 11:05 am
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

Ok, it seems we're not getting anywhere with this.

Can someone at RPF/Broadcom that knows how to hook the features up give us an estimate of how non trivial that would be?

Anholt maybe?
by bullen
Sat Jan 20, 2018 10:23 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

Yes, but how do I know they are not in use? Is headless enough?
by bullen
Sat Jan 20, 2018 9:08 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

So how does one make sure they are not in use?
by bullen
Sat Jan 20, 2018 8:12 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

See now were getting somewhere, paging Broadcom experts!
by bullen
Sat Jan 20, 2018 7:48 pm
Forum: Advanced users
Topic: Analogue audio redux
Replies: 78
Views: 27451

Re: Analogue audio redux

AL lib: (EE) oss_open_playback: Could not open /dev/dsp: No such file or directory AL lib: (WW) alc_initconfig: Failed to initialize backend "pulse" Sad panda... seems related to low power: does the GPU disable audio if it detects low power? The 3D works fine?! Edit: ok now the pi is toast... I get ...
by bullen
Sat Jan 20, 2018 7:08 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

Very cool! Thx for insight!
by bullen
Sat Jan 20, 2018 4:47 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

Ok, thx!

Looking forward to this one more and more: https://www.youtube.com/watch?v=Mp6znwaZ5xo
by bullen
Sat Jan 20, 2018 3:58 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

So there are no power saving features that ARM has on mobile phones in the SoC on the RPi?

Maybe those are not ARM specific but instead every manufacturer makes their own: Apple, Samsung etc.
by bullen
Sat Jan 20, 2018 3:24 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

AIUI?

So there is a way to save energy by turning off the GPU altogether?

But raspbian craps out if you do?
by bullen
Sat Jan 20, 2018 1:44 pm
Forum: General discussion
Topic: Broadcom BCM2835 Power Saving
Replies: 41
Views: 4993

Re: Broadcom BCM2835 Power Saving

Ok, found this: viewtopic.php?f=81&t=44834

So is it linux or ARM that consumes most energy?

Writing my own hypervisor that can run Java will take a lifetime, so this is not applicable.

But what term can I search to trigger the built in ARM power saving features?
by bullen
Sat Jan 20, 2018 1:38 pm
Forum: Java
Topic: Raspberry PI + Java + DB
Replies: 4
Views: 5446

Re: Raspberry PI + Java + DB

You can use my distributed HTTP JSON NIO async. to async. Java database ROOT:

https://github.com/tinspin/rupy/wiki/Storage

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