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Topic: Is the Arduino Yun still Open Hardware? (Read 38276 times) previous topic - next topic

bilica


Squonk42



sonnyyu

FYI;-

The heart of Yún is CPU - AR9331, here is the market position of it.

AR9331 (MIPS 24k@400MHz, 1x1:1, 150Mbs/2.4GHz, PHY/100Mbs)

AR9341 (MIPS 74Kc@500Mhz, 2x2:2, 300Mbs/2.4GHz, PHY/100Mbs)

AR9344 (MIPS 74Kc@600MHz, 2x2:2, 300Mbs/2.4GHz, 450Mbs/5GHz, PHY/1Gbs)

QCA9558 (MIPS 74Kc@720MHz, 3x3, 450Mbs/2.4GHz, 1300Mbs/5GHz, PHY/1Gbs)

It is already on bottom of the food chain.

Squonk42

Depends what you consider: with 0.5W @ 18 dBm, the AR9331 is still the lowest power and the cheapest WiSoC  :smiley-mr-green:

sonnyyu

AR9331 is still the lowest power.  Yes, I agree.
and the cheapest WiSoC.  Unsure.

Ralink and MediaTek

RT3050
RT3070
RT5350
MT7620

Squonk42

Yes, I meant BOTH lowest power with a reasonable price.

I know RT5350 is cheaper, and it uses also only SDR DRAM vs. DDR1/DDR2 which is also cheaper.

Did you hear something about AR9331 EOL or replacement yet?

sonnyyu

Quote
Did you hear something about AR9331 EOL or replacement yet?

I have no answer, AR9331 is not on my radar and not my bread & butter thing. But I would like to know as well. Any one?

An other thing Arduino Yún is missing is BOM (Bill of materials). Where is it?



Squonk42

#38
Jul 29, 2014, 03:14 pm Last Edit: Jul 29, 2014, 03:36 pm by Squonk42 Reason: 1

Hi,

1.  Arduino YUN Schematic (PDF)
2. Arduino YUN Layout (PDF)
3. Arduino YUN Gerber (RAR)

http://linino.org/doku.php?id=wiki:hardware


How can I trust these documents ? There are several noticeable differences between what they show and what I see on my Yun boards (see image).

You can't :0

The schematic doesn't contain a meaningful version number (only Rev. 010 in the frame) and is dated "Friday, August 30, 2013", this appears to be the same as the one provided on the Yùn product page (http://arduino.cc/en/uploads/Main/arduino-Yun-schematic.pdf.

However, the PDF containing the layout and the gerber files are consistent: they have the same date "2013-08-30" in their frames, additionally giving a hint on the board revision number with the layout file name "dogStick-01-V03.PCB".

My guess is that these files are related to Arduino Yùn R3, but my Yùn board (which contains the same changes as yours) has "R4" silkscreened (EDIT: actually in the bottom copper layer) on the bottom side near the bottom right corner of the PCB, so it looks like revisions don't match :(

There is also a ZIP file on the Yùn product page (http://arduino.cc/en/uploads/Main/arduino-Yun-DSN.zip) containing what appears to be the Orcad design file "DOGSTICK-V05(20140224).DSN", but I don't have Orcad and I can't import it in either Altium or PADS (f someone has Orcad and can generate a PDF out of it, thanks :smiley-mr-green:). So it looks like it is V05?!? Not so easy! The same file (zipped under a different name!) is available on the Linino Arduino Yùn product page http://www.linino.org/wordpress/wp-content/uploads/2014/02/Arduino_YUN-R4.DSN_.zip with a label "Arduino Yun R4 (ORCAD)" in front of it!

Even better, on the same Linino Arduino Yùn page (http://www.linino.org/modules/yun/), there is a PDF file http://www.linino.org/wordpress/wp-content/uploads/2014/02/Arduino-Yun-V4-Schematic.pdf with the label "Arduino Yun R4 Schematic (pdf)". Its frame contains a date "Friday, February 28, 2014", so it looks like it is newer indeed and corresponds to the Arduino Yùn R4 design. There is an item "Arduino Yun R4 Gerber (pdf)", but no link to download  :smiley-slim:

And you can't trust this schematic anyway, as my board has 3 buttons ("32U4 RST", "YUN RST" and "WLAN RST"), but I only see 2 in the schematic ("32U4 Reset" and "USER BUTTON")!

My conclusion is that Arduino/Dog Hunter is providing outdated or incomplete versions of the design files, be it on purpose or not.

Actually, the Yùn is selling like hot cakes with a comfortable margin, and they surely don't want to see cheap Chinese clone appearing soon ]:D

Jantje


Actually, the Yùn is selling like hot cakes ....

What is your source for this statement?
Best regards
Jantje
Do not PM me a question unless you are prepared to pay for consultancy.
Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -

Squonk42



Actually, the Yùn is selling like hot cakes ....

What is your source for this statement?
Best regards
Jantje

A large distributor in a European country...

Apparently, you can't get any official figures from Arduino, unlike the RPi Foundation: http://www.raspberrypi.org/two-million/.

Jantje




Actually, the Yùn is selling like hot cakes ....

What is your source for this statement?
Best regards
Jantje

A large distributor in a European country...

Apparently, you can't get any official figures from Arduino, unlike the RPi Foundation: http://www.raspberrypi.org/two-million/.

Thanks.
I really like the yun concept. I only think it is a shame the "arduino side" is a leonard only and not a due, Mega or teensy 3.1.
I have 4 yuns now so arduino can't complain about me  buying clones ]:D of which 2 have the leonardo disabled and a mega attached.
If the yun is selling like hot cake I just don't understand why there is so little interest in the Arbor Linux Shield which is a yun shield https://www.indiegogo.com/projects/arbor-linux-shield-an-openwrt-wifi-development-board-for-arduino-other-mcus
At the current rate of 35$ a day this shield will never exist  =(

Best regards
Jantje
Do not PM me a question unless you are prepared to pay for consultancy.
Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -

Squonk42


I really like the yun concept. I only think it is a shame the "arduino side" is a leonard only and not a due, Mega or teensy 3.1.
I have 4 yuns now so arduino can't complain about me  buying clones ]:D of which 2 have the leonardo disabled and a mega attached.

Yes, it would be great to have a Yùn "shield", so you can attach any Duino you like: small, powerful, etc, depending on your needs.


If the yun is selling like hot cake I just don't understand why there is so little interest in the Arbor Linux Shield which is a yun shield https://www.indiegogo.com/projects/arbor-linux-shield-an-openwrt-wifi-development-board-for-arduino-other-mcus
At the current rate of 35$ a day this shield will never exist  =(

The choice of having a module with headers is not the best choice IMHO. A board with either a Gainstrong GS-Oolite or a Carambola 2 castellated module would have been a much better choice: smaller, more integrated and CE/FCC/RoHS certified...

Check these ones::
http://8devices.com/community/viewtopic.php?f=3&t=685&hilit=yun
https://www.indiegogo.com/projects/dpt-board-linux-and-wifi-becomes-easy

I may come with my own soon, stay tuned :smiley-mr-green:

Jantje


The choice of having a module with headers is not the best choice IMHO. A board with either a Gainstrong GS-Oolite or a Carambola 2 castellated module would have been a much better choice: smaller, more integrated and CE/FCC/RoHS certified...

Check these ones::
http://8devices.com/community/viewtopic.php?f=3&t=685&hilit=yun
https://www.indiegogo.com/projects/dpt-board-linux-and-wifi-becomes-easy

My lack of electronics makes I do not understand your comment.
If I look at the links I see the following:
The first is a shield which has been coming for a couple of months now.
The second has nothing to do with a dual core solution (real time + unix)
I don't know what Carambola 2 and Gainstrong GS-Oolite are.

Best regards
Jantje
Do not PM me a question unless you are prepared to pay for consultancy.
Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -

Squonk42



The choice of having a module with headers is not the best choice IMHO. A board with either a Gainstrong GS-Oolite or a Carambola 2 castellated module would have been a much better choice: smaller, more integrated and CE/FCC/RoHS certified...

Check these ones::
http://8devices.com/community/viewtopic.php?f=3&t=685&hilit=yun
https://www.indiegogo.com/projects/dpt-board-linux-and-wifi-becomes-easy

My lack of electronics makes I do not understand your comment.
If I look at the links I see the following:
The first is a shield which has been coming for a couple of months now.
The second has nothing to do with a dual core solution (real time + unix)
I don't know what Carambola 2 and Gainstrong GS-Oolite are.

Sorry about my lack of explanations!

The Arduino Yùn is in fact a Leonardo + Atheros AP121 reference design + 1 port USB hub and microSD slot combo.

You know the Leonardo, for sure!

The Atheros AP121 reference design is a Wifi router design proposed by Atheros (a WiFi SoC manufacturer), which is the base of many existing routers, including the famous TP-Link TL-WR703N pocket router. This reference design contains an Atheros AR9331 SoC including WiFi, a 5-port Ethernet switch and a MIPS24Kc 400 MHz CPU, along with a DRAM chip, an SPI Flash chip, a crystal and 2 transistors: this is basically what is hidden under the Yun's metallic shield.

The USB hub is the TQP48 chip on the bottom  side of the Yùn PCB.

But the AP121 reference design is also exactly what is contained on both the Gainstrong GS Oolite and 8Devices Carambola 2 modules:
http://3cmade.en.alibaba.com/product/1735283497-218161922/GS_OOLITE.html
http://8devices.com/carambola-2

So if you take a board that includes one of these modules and also the required USB hub+microSD combo chip (AU6350), and you connect it to an external Arduino board, you get a Yùn...

The actual connection between the Linux router ant the Arduino CPU only requires a few signals: UART, SPI, handshake and reset, for a total of. 9 signals only!

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