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by blc
Mon Mar 21, 2016 10:24 am
Forum: General discussion
Topic: Are you a Raspberry Pi-oneer?
Replies: 32
Views: 6131

Re: Are you a Raspberry Pi-oneer?

Does anyone else remember David Braben on the BBC touting the early USB stick Raspberry Pi prototype? (This one http://www.bbc.co.uk/news/technology-13292450). That was my first introduction to the Raspberry Pi, and I wanted one ever since. I don't think my original B was one of the very first 10,00...
by blc
Fri Mar 18, 2016 1:53 pm
Forum: General discussion
Topic: Power Consumption Rate of Pi2 on USB Battery Bank?
Replies: 23
Views: 6052

Re: Power Consumption Rate of Pi2 on USB Battery Bank?

You don't need to adjust cell capacity because of the cutoff voltage, the capacity rating is from full charge (4.2V) to cutoff voltage for the cell at a 1C discharge rate. If you put a fully charged 1800mAh cell on a discharger/tester and set it for a constant current discharge at 1C (1.8A) you'll ...
by blc
Fri Mar 18, 2016 12:36 pm
Forum: General discussion
Topic: Power Consumption Rate of Pi2 on USB Battery Bank?
Replies: 23
Views: 6052

Re: Power Consumption Rate of Pi2 on USB Battery Bank?

startrek.steve wrote:Hmm yes, I was thinking more in the area of 24 hours...
We'll see at the weekend eh?

Steve
I did say it was probably "worst case" numbers. If you want a more accurate estimate then you have to measure (or test) everything. :)
by blc
Fri Mar 18, 2016 11:28 am
Forum: General discussion
Topic: Power Consumption Rate of Pi2 on USB Battery Bank?
Replies: 23
Views: 6052

Re: Power Consumption Rate of Pi2 on USB Battery Bank?

You've got me thinking now, I have a Maplin 6000 Ma power bank, and running a Pi1 with Wifi and a Pi camera making a timelapse video gave me around 8 hours useage before shutdown. Im wondering how long I'll get out of my Zero, Im going to fully charge my power bank tonight and give it a try. I expe...
by blc
Fri Mar 18, 2016 9:02 am
Forum: General discussion
Topic: Question regarding Raspberry Pi 2
Replies: 3
Views: 1201

Re: Question regarding Raspberry Pi 2

Sorry, I'm not sure what you're trying to achieve here. Assuming you mean an IEEE 1394 port - aka Firewire - then the Pi doesn't have Firewire, only USB. If you want to connect it to a host device via the host's Firewire port, what are you hoping to achieve? Powering the Pi from Firewire? Exchanging...
by blc
Fri Mar 18, 2016 8:55 am
Forum: General discussion
Topic: Power Consumption Rate of Pi2 on USB Battery Bank?
Replies: 23
Views: 6052

Re: Power Consumption Rate of Pi2 on USB Battery Bank?

Calculate it.. its not very difficult to get a fairly accurate estimate... from the FAQ https://www.raspberrypi.org/help/faqs/ a Pi 2 at idle takes about 0.22a (I assume at 5v), you can buy cheap inline USB measuring devices online to verify. To make it easy I suggest you convert everything to watt...
by blc
Wed Mar 16, 2016 2:36 pm
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 24802

Re: 3D Printer

Well, I did it: I pulled the trigger and ordered the Hictop Desktop 3D printer from Amazon (http://www.amazon.co.uk/gp/product/B015OF7JI6). It should be arriving tomorrow, but I'm not anticipating having the time or space to start unpacking it until the weekend. I'll think about doing an unboxing vi...
by blc
Wed Mar 09, 2016 1:30 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 106709

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

But you have competition heading your way. Just ordered a ODROID XU4 last week too. It's peak computing time and you're missing the bus. The XU4 is more than twice the price of any Raspberry Pi and has a huge power requirement (their site states 5V 4A is required). So what you're basically saying i...
by blc
Wed Mar 09, 2016 8:12 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 106709

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

I can go along with the emissivity argument (even if you can't spell aluminium ;)), but how do you explain the 'white hot' area around the heatsink being larger than on the non-heatsinked board? Shouldn't the heatsink be radiating heat away from the board, not towards it? @loverpi ...the heatsinks ...
by blc
Tue Mar 08, 2016 1:03 pm
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 24802

Re: 3D Printer

I think I'm pretty much sold on the Hictop Desktop kit: http://www.amazon.co.uk/dp/B015OF7JI6/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=3JKIWWOKQIOPC&coliid=I1ZNJ58VVN4U2&psc=1 Fairly cheap, aluminium frame, and a good print size (270x200x190mm). The only negative point is that I can't see a hea...
by blc
Tue Mar 08, 2016 10:26 am
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 24802

Re: 3D Printer

I think I'm pretty much sold on the Hictop Desktop kit: http://www.amazon.co.uk/dp/B015OF7JI6/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=3JKIWWOKQIOPC&coliid=I1ZNJ58VVN4U2&psc=1 Fairly cheap, aluminium frame, and a good print size (270x200x190mm). The only negative point is that I can't see a heat...
by blc
Thu Mar 03, 2016 1:39 pm
Forum: General discussion
Topic: Ditch the locking micro-SD slot and go for a regular one.
Replies: 36
Views: 10587

Re: Ditch the locking micro-SD slot and go for a regular one

I'm sure that cases with better access to the sd card will be along in short order. Well the Pimoponi PI3 ones have the problem I described so I wouldn't hold your breath. PeterO Pimoponi. So... are you telling me that you want a pony...? :D (sorry, I just thought that was too good a typo to miss!)
by blc
Thu Mar 03, 2016 1:27 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 106709

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Is there anyway to fix the problem that when people post 3840 x 2160 resolution images here it's un-viewable in the Chrome browser? Not to mention that it's nearly a one megabyte download which is painful on mobile devices. And then someone quotes the post containing the image so the layout gets ma...
by blc
Wed Mar 02, 2016 9:44 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 106709

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

ghalfacree wrote:I confirmed the temperature with a K-type contact probe, and also by poking the chip.

Don't poke the chip. It hurts.
:lol:

It always makes me nervous when I see CPU temps hitting ~80°C on any platform, but I'm not too worried about having to use a heatsink.
by blc
Tue Mar 01, 2016 2:22 pm
Forum: Off topic discussion
Topic: My ZX81 clone ZX81+35 and a PSG sound expansion board for it (now released on GitHub)
Replies: 97
Views: 44493

Re: My ZX81 clone now called "ZX81+34"

Congratulations, this is some impressive work.
by blc
Tue Mar 01, 2016 2:06 pm
Forum: Gaming
Topic: SteamOS
Replies: 12
Views: 25195

Re: SteamOS

You'd be better off using Moonlight Embedded on the Pi and a second PC with a relatively high-end Nvidia graphics card. That way you can access all the features of Steam that you want, and you should even be able to play games. Or get a Steam Link. SteamOS and Steam will not work on a Pi. Not unless...
by blc
Thu Feb 25, 2016 7:35 pm
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 24802

Re: 3D Printer

I have found another Prusa on eBay for £159! http://www.ebay.co.uk/itm/2015-Upgraded-Full-Quality-High-Precision-Reprap-Prusa-i3-DIY-3d-Printer-/181989923588?hash=item2a5f71db04:g:aHkAAOSwJkJWlZ5A Looking at the specs these look identical, even down to the spelling mistakes? Not sure which one is t...
by blc
Thu Feb 25, 2016 6:35 am
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 24802

Re: 3D Printer

What's a reprap kit? RepRap is and was the open source hardware and software that kicked off cheap 3D printing. It's gone through several generations now but I think RepRap as a name is the family as a whole. Prusa, for instance, is one of them. If you can get it as a kit, it will be a RepRap. For ...
by blc
Wed Feb 24, 2016 9:45 pm
Forum: Off topic discussion
Topic: This is how to get a Pi Zero.
Replies: 20
Views: 4348

Re: This is how to get a Pi Zero.

Jednorozec wrote:Your humor detector seems to be broken. :roll:
Usually is.
by blc
Wed Feb 24, 2016 9:05 am
Forum: Off topic discussion
Topic: This is how to get a Pi Zero.
Replies: 20
Views: 4348

Re: This is how to get a Pi Zero.

Can't have been. My screen is not three foot fourteen inches wide. Oh, you mean it was 194 seconds long. Interesting, 194 is the sum of two squares and the smallest number written as the sum of three squares in five ways. Well, spotted. I thought he meant 3.14, as in 3.1415926 (7 decimal places is ...
by blc
Tue Feb 23, 2016 8:10 pm
Forum: General discussion
Topic: Enabling USB Touch Screen - How?
Replies: 9
Views: 24727

Re: Enabling USB Touch Screen - How?

The question is old enough but i will answer. May be it will help. I have similar touchscreen from Eleduino shop. Please have a look on: https://github.com/bsteinsbo/rpi_touch_driver I compiled this app and it works with this touchscreen. WBR, For anyone else encountering the same issue with simila...
by blc
Tue Feb 23, 2016 8:33 am
Forum: Off topic discussion
Topic: 3D Printer
Replies: 70
Views: 24802

Re: 3D Printer

I would imagine that your buying choices are going to be dictated by how much you're prepared to tinker. For half of your budget (or possibly even less) you could get a reprap kit, or some kind of derivative, that will probably do the job just as well as machines twice the cost... provided that you'...
by blc
Mon Feb 22, 2016 8:53 am
Forum: General discussion
Topic: Best sound capture device
Replies: 24
Views: 10230

Re: Best sound capture device

Just incase anyone is interested ive been doing some looking around According to this page http://www.raspyfi.com/raspberry-pi-usb-dac-and-raspyfi-supported-dacs/ the Behringer U-CONTROL UCA202 is supported. Looking on ebay they can be picked up for 20quid so im thinking i will go for one of those ...
by blc
Thu Feb 18, 2016 8:37 pm
Forum: Gaming
Topic: Retropie custom controller - using a true analog stick?
Replies: 9
Views: 10568

Re: Retropie custom controller - using a true analog stick?

Teensy 2.0 would be the one to use. But for your narrow requirements. of 10buttons and 1 stick.. An arduino pro-micro would work. I have code setup for 1 joystick, and 11 buttons, i can't seem to get 12+ buttons to work for some reason. But 2-4 analog channels and 11 buttons is what i got code for ...
by blc
Thu Feb 18, 2016 9:19 am
Forum: Gaming
Topic: Retropie custom controller - using a true analog stick?
Replies: 9
Views: 10568

Re: Retropie custom controller - using a true analog stick?

The simplest solution is to program a microcontroller as a USB HID joystick: hook up your buttons & analogue stick to the microcontroller and then plug it into the Pi using USB. The Pi and the software sees it and can use it in the same way as any other joystick/joypad. This is well documented for t...

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