Raspberry Pi Forums

riklaunim

May be hard as the GPU is bit and not found currently even in low end devices.

riklaunim

The Windows 10 "IoT" version for Raspberry Pi 2 will be something very likely like the Windows for Intel Galileo - a minimalistic Windows build on which .NET/C# is available as a development platform with some SDK. On Linux there is Mono, but that's not the first choice for scripting Raspberry.

riklaunim

They could have changed it for RPi2 but they didn't... But there is a lot of ARM single board computers with native Ethernet. Note that not every one has true/full Gigabit Ethernet.

riklaunim

Stability through freezing isn't a perfect solution. That is only used and wanted by people that use Centos/RHEL/SLED. Developers, average users etc. want to have in general modern software. Ubuntu family does freeze packages but they have fast, 6 month development cycle and they provide newer versi...

riklaunim

Udoo is old, and isn't anything very unusual. If you have an Arduino board you can script it from any computer it can connect to. Udoo or Raspberry aren't required. If you electronics setup require also a single board computer then you can use one depending on your requirements.

riklaunim

That tablet was around $105, and the price is falling down. Banggod has a 2 GB RAM tablet now for $90 (~$47 for RPI 2 in local store). For me it was essential that it would be able to run ASCOM platform apps for "mobile" astrophotography. It may not be the most Linux friendly device, but it does wor...

riklaunim

50cm Mirror, 5000mm focal length That's a very big telescope. The size is very good for planetary/lunary imaging, but very big for deep space objects. A few weeks ago we tried it on Jupiter with my DSLR, an EOS 70D, which can also do 1080p sensor crop video, attached directly to the telescope. Didn...

riklaunim

And a comparison of some Phoronix benchmarks against Teclast tablet (x86 Intel CPU) running Ubuntu 15.04 live from USB: http://openbenchmarking.org/result/1503193-KH-1502103KW42 -- Intel gets noticeably better results (and it runs x86 Windows 8.1 so some Windows apps got quite portable). Under Linux...

riklaunim

LitterBugs: I don't really care if a little IR leaks in, this'll be done indoors with a UV torch. If you will cut out other light sources then IR leak isn't a problem. DSLR UV filters at low prices will also be one of Schott/Hoya/Wratten color glass filters and will have IR leaks unless stacked wit...

riklaunim

It's very very hard to make a filter that would pass UV but not IR or visual light. Astronomical filters like Baader U-Filter or Astrodon UVenus can do it, but they aren't cheap. You can Google some UV non-astronomical pictures taken with them. A cheap alternative is to use Schott BG39 with Wratten ...

riklaunim

Any driver won't change much for an relatively old ARM GPU. It still won't be able to run games made on popular / commercial high end game engines that support desktop Linux via OpenGL and Intel/AMD/nVidia GPUs. And some CPU power is still needed. Even core-i7 may be not enough for bigger battles in...

riklaunim

Prestashop is rather PHP than anything Windows. Any big PHP script may even have problems running fast on average PC, so Raspberry Pi may not be the best hardware for development of showcasing of very big PHP apps. That's a something you should as your IT team

riklaunim

my priority: Important: 1) videocore driver (http://dri.freedesktop.org/wiki/VC4/) 2) usb 3.0 ( lots of usb 3.0 hardware not stable like usb 2.0. we need stable usb 3.0 ) Only some high end ARM SoCs implement USB3 (and all Intel/AMD low power SoCs?) so 2 would quite likely already exclude 1 and use...

riklaunim

You can buy USB-based reader which will act as a keyboard (and is relatively easy to use). But before you buy anything you must determine which RFID standard was used on your Cats. 125 KHz Unique standard lets you read IDs of tags of that standard. More advanced RFID solutions will rather use more v...

riklaunim

My understanding is the OpenGL is not available for the Raspberry Pi at current. There are discussions on the forum about work being carried out to provide OpenGL for the Raspberry Pi (I can't remember were of the top of my head), but that is a work in progress. GPU on most/all(?) ARM SoCs of this ...

riklaunim

While where on the topic of a fictitious Raspberry Pi 3 or as I would call it the Raspberry 2B+. I think it should have a dedicated ethernet and not have to share the bus with usb. A faster cpu with more cores but it would be better with a more powerful gpu. That GPU hasn't been updated even from t...

riklaunim

You can't really compare x86 modern CPU with ARM CPUs. They have totally different design and market. Desktop i5 will be have vastly better performance and will be able to run common x86 software and OS. Raspberry with ARM is more suited for embedded solutions with low power requirements at a cost o...

riklaunim

You can use nearly any GUI framework for this - PyQt5, PyGTK, or game libraries - PyGame, Kivy.

riklaunim

JohnRDoeP wrote:but it needs to take as less power as possible

Bluetooth low energy (4.0) or those UART and nrf24l01 dongles are pretty much low power. RFID is not designed for 2 side communication.

riklaunim

Use Bluetooth, or wireless UART dongles, nrf24l01 dongles or other, even WiFi direct.

riklaunim

SD cards or SSDs are nowadays very durable and using RAM won't save it life. Media streaming should also be mostly "read only", without any noticeable writes.

riklaunim

VideoCore 4 docs state:

Code: Select all

 Fully supports OpenGL-ES 1.1/2.0 and OpenVG 1.1

So there may be a problem with 3.1 - and there always will be a difference between OpenGL ES and OpenGL.

riklaunim

Depends what you have bought. Many USB reader/writer are USB-UART devices and you could use them by doing UART (serial) connection and sending/reading data specified in the SDK/docs. Other option is to use pyusb, you can check my examples: https://github.com/riklaunim/pyusb-keyboard-alike

riklaunim

That can be done by profiles and NFC tag in the car too. If your phone doesn't have NFC then QRCode triggering the profile.

If you want a network between them then either you will have to configure WiFi direct connection or add WiFi access point. That will be more work, some codding etc.

riklaunim

PiGraham wrote:Yes it is very common, and it removes fixed pattern noise, but, as I explained, it can't remove random noise that arises in the silicon.

On a good stack noise level should be very low and any random noise averaged out. FPN is usually removed by flat frame if any (CMOS).

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