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by mic_s
Sun Jan 17, 2016 7:11 pm
Forum: General discussion
Topic: Raspberry Pi Zero long term availability?
Replies: 80
Views: 16308

Re: Raspberry Pi Zero long term availability?

or can the card be powered through the GPIO connector pads?
Yes, pizero powered through the GPIO pads is EXACTLY the same as powered through "USB-power-connector" or through power-pins in "USB-data-connector". Use only one of these alternatives.
by mic_s
Wed Jan 13, 2016 12:49 pm
Forum: General discussion
Topic: Ethernet/USB bottleneck
Replies: 23
Views: 8270

Re: Ethernet/USB bottleneck

There is a way to squeeze more I/O by using a USB3 USB Ethernet Adaptor Alternative : usb 2.0 to Gigabit Ethernet Microchip Lan7500-ABZJ (current chip price : 3.80 $ in 5k+ quantities, + Magnetics + Cristal + ...) http://ww1.microchip.com/downloads/en/DeviceDoc/00001734A.pdf Speed is limited by USB...
by mic_s
Tue Dec 22, 2015 8:56 am
Forum: Bare metal, Assembly language
Topic: Initializing RAM on Raspberry Pi 2
Replies: 16
Views: 2579

Re: Initializing RAM on Raspberry Pi 2

void put8(unsigned long int addr, char val){ *(volatile char*)addr = val; } Compiler output — ARM gcc 4.8.2 : ... ldr r3, [r7, #4] -- load addr to r3 ldrb r2, [r7, #3] -- load Byte val to r2 strb r2, [r3] -- store byte ... BTW .: http://gcc.godbolt.org/ is a free interactive tool. You can select th...
by mic_s
Wed Dec 09, 2015 8:50 pm
Forum: General discussion
Topic: Meet Raspberry Pi Zero: the $5 computer
Replies: 539
Views: 109491

Re: Meet Raspberry Pi Zero: the $5 computer

Good point. But .. you don't need to route all (4+2=6) CSI-lanes (= 12 traces) Only two lanes (= 4 traces) and one clock-lane (= 2 traces) are required for PI camera. For a second or two, I wondered whether you might be Mike Stimson... wouldn't you also need 2 tracks for i2c, one for led gpio, powe...
by mic_s
Wed Dec 09, 2015 6:51 pm
Forum: General discussion
Topic: Meet Raspberry Pi Zero: the $5 computer
Replies: 539
Views: 109491

Re: Meet Raspberry Pi Zero: the $5 computer

That's drawn with the smaller CSI connector as seen on the Compute Module IO board - I just happened to notice it would fit on the edge. Alternatively, full or smaller size on the bottom with the other connectors. You;re igbnoring the huge amount of trace routing required for the CSI - I think that...
by mic_s
Sat Dec 05, 2015 2:55 pm
Forum: General discussion
Topic: Google postes about PI and Image Processing
Replies: 0
Views: 290

Google postes about PI and Image Processing

Wenn you are interrested in Googles Cloud Vision API and Image Processig you may also be interrested in Ram Ramanathans recent post where he discussed there demo-platform using – you guess it – a Raspberry PI and a few hundreds of lines of Python code : http://googlecloudplatform.blogspot.de/2015/12...
by mic_s
Fri Dec 04, 2015 11:04 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: 2x RPi ethernet over usb? howto?
Replies: 10
Views: 16387

Re: 2x RPi ethernet over usb? howto?

does the CONFIG_USB_GADGET feature apply to the Pi Zero as well ? Short answer is: Yes. However, there are actually small problems with the USB gadget driver. If these are resolved PI A, PI A+ and PI Zeros can be used as nodes in a low-cost USB 2.0 cluster (without Ethernet adapters). e.g one Raspe...
by mic_s
Wed Dec 02, 2015 10:36 am
Forum: General discussion
Topic: Raspberry Pi Zero audio outputs
Replies: 28
Views: 41090

Re: Raspberry Pi Zero audio outputs

by mic_s
Tue Dec 01, 2015 1:50 pm
Forum: General discussion
Topic: Cluster from brand new Pi-Zero
Replies: 45
Views: 30874

Re: Cluster from brand new Pi-Zero

Heads up !
MagPi 40 (inc. PI zero) on sale in Irish Tesco's today. (01.12.15)
by mic_s
Sun Nov 29, 2015 4:04 pm
Forum: Off topic discussion
Topic: Is a new Raspberry Pi model coming?
Replies: 265
Views: 45403

Re: Is a new Raspberry Pi model coming?

Has anyone who owns a Zero also checked the config file to see if the overclocking options have been used/can be set to something else or is the clock speed baked into the firmware. MagPi Issue 40, Page 21 : We compared the boot time of the Raspberry Pi Zero to the Raspberry Pi 2. How does it fare?...
by mic_s
Wed Nov 25, 2015 10:26 pm
Forum: General discussion
Topic: Sinclair ? Sir Clive Sinclair ??
Replies: 2
Views: 780

Sinclair ? Sir Clive Sinclair ??

No. No. This post is not about Sir Clive, ZX80, ZX81 or Spectrum. This is about a project you may be interested in : „Poco 'Super'computer“ : https://www.indiegogo.com/projects/poco-supercomputer-multi-function-pi-gadget Poco "Super"computer = Raspery Pi + Sinclair (not Sir Clive, but Grant, his nep...
by mic_s
Tue Nov 10, 2015 12:34 pm
Forum: Compute Module
Topic: CM1 new price
Replies: 14
Views: 2641

Re: CM1 new price

CM1.
New Price : £17.97 (Qty 1)
source: http://uk.rs-online.com/web/p/processor ... s/8268825/
by mic_s
Sun Sep 27, 2015 5:50 pm
Forum: Compute Module
Topic: CM1 new price
Replies: 14
Views: 2641

Re: CM1 new price

DougieLawson wrote:Does this mean CM2 is soon to appear?
Yes and No.

Yes, there will be a CM2.
No, this Pricecut does NOT mean CM2 is „very soon“ to appear.
You have to wait for it.
Hours ? Days ? Weeks ? Months ?
Be patient.

michael
by mic_s
Sun Sep 27, 2015 12:53 pm
Forum: Compute Module
Topic: CM1 new price
Replies: 14
Views: 2641

CM1 new price

CM 1.
New Price : £19.50 (Qty 1)
source: http://uk.rs-online.com/web/p/processor ... s/8268825/
by mic_s
Fri Sep 11, 2015 12:03 am
Forum: General discussion
Topic: Why didn't we go with Mali?
Replies: 157
Views: 27974

Re: Why didn't we go with Mali?

Gigabit Ethernet or some other way of getting data quickly on and off the Pi would all...
There is already a fast interface.
Since the first Raspberry Pi.
Multi-Gbit.

ok - kind of multi-Gbit : CSI and DSI

michael
.
by mic_s
Sat Jun 06, 2015 6:45 pm
Forum: Advanced users
Topic: Assembler :D
Replies: 2
Views: 431

Re: Assembler :D

Is it possible to run my own assembly project on my pi?
Short Answer : Yes

Your start points :
(1) http://arm.flatassembler.net ( ARM assembler )
(2) viewtopic.php?f=72&t=72260 ( docs, examples e.g. https://github.com/PeterLemon/RaspberryPi )
by mic_s
Sun Oct 26, 2014 4:44 pm
Forum: General discussion
Topic: Model A sold "only" 100,000 units - a flop ?
Replies: 87
Views: 13067

Re: Model A sold "only" 100,000 units - a flop ?

Q : 256MB or 512MB ? A : Model A+ 256MB Q : 1,2,3 or 4 x USB 2.0 A : Model A+ : 1 x USB 2.0 socket Q : dimensions ? (size does matter ?) A : Model A+ : 66 x 56 x 14mm, (Model B+ is 86 x 56 x 20mm) Source: http://uk.rs-online.com/web/p/processor-microcontroller-development-kits/8111284/ michael

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