Author Topic: ECCHI PROJECT - the road Accessory Port to and OTG  (Read 6272 times)

Offline cuevavirus

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #15 on: June 11, 2020, 05:30:36 AM »
It's also indicated in this diagram from the FCC document



From the table in the SonicMastr' s post:

A is the devkit
D is the accessory box

Clearly the thing attached to the top of the devkit is the accessory box.

Offline dots_tb

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #16 on: June 11, 2020, 08:47:04 AM »
Panasonic K1HA14AD000 shield (modified as some parts have been clipped off):












 








Accessory Port:



Offline Lazyox199

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #17 on: June 11, 2020, 09:08:01 AM »
[ all you really need to up volt from 3.3 to 5v is an lm7805

Offline Lazyox199

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #18 on: June 11, 2020, 09:37:02 AM »
 im wrong, aperantly this one steps down the voltage

Offline Lazyox199

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #19 on: June 11, 2020, 09:40:28 AM »
Panasonic K1HA14AD000 shield (modified as some parts have been clipped off):












 








Accessory Port:


interesting how it fits

Offline dots_tb

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #20 on: June 12, 2020, 12:13:22 AM »
Multi-ctn:



Offline realusagichan

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #21 on: June 12, 2020, 12:58:24 AM »
Here's the cable in the 2000 SO CBPS video after securing it.


Offline Asdron

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #22 on: June 12, 2020, 11:40:09 PM »
This got me interested in the vita again.
Rebuilt the cable that I used back in 2017 (but somehow threw away when I stoped working on stuff in the vita scene..)
Used a female mini usb connector because it has those bent pins that make sure it makes contact. Also its very durable.
Already unplugged and replugged it like 50 times without breaking it.



To manufacture it just remove the shielding of the female usb mini connector and file it down from the side without pins


Was able to sand it down even more to make it fit even better


Next step will be to add a boostconverter to make it work without external power.. and maybe also create a 3dprinted shell for it to make it even more durable

Update:

Still has some issues - disconnects after mounting. will report back when fixed.

Update 2:
Turns out the power which can be delivered by the 3.3V rail from the vita is extremely low. By optimizing the circuit I used I could achieve filetransfers but not very stable.
My USB drive only used 0.02A during write. It was the only one out of 15 pcs that kinda worked.
« Last Edit: June 13, 2020, 03:24:55 AM by Asdron »

Offline dots_tb

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #23 on: June 13, 2020, 03:21:37 AM »
Accessory Port power delivery on 3.3v VBUS....

0.02 amps on 10A mode
15.85 on 300mA mode
200 ohm load

Not looking good.

I might be a retard though.
« Last Edit: June 13, 2020, 03:29:03 AM by dots_tb »

Offline dots_tb

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #24 on: June 13, 2020, 05:24:10 AM »
Accessory Port is theorized to be MHL by Deppressiety, here is some evidence we gathered to support it:
MHL standard was created in June 2010, development known to be starting as early as 2010, with Sony co-developing: https://en.wikipedia.org/wiki/Mobile_High-Definition_Link

The PS VITA was released Dec 2011 in Japan: https://en.wikipedia.org/wiki/PlayStation_Vita

The Galaxy S2, one of the first devices to support MHL doesn't seem to have dedicated HDMI/MHL hardware: https://news.samsung.com/global/galaxy-s-ii-teardown-splitting-8-9-mm-of-the-latest-samsung-technologies

5 Pins is enough to do MHL 1.0.

20mA can't power most shit.

HDMI CEC is connected to Syscon on PS4 and PS3. The ID pin on the Vita would be CEC on MHL and is connected to the Syscon.

This is all speculative and is what Sony may have used the port for, there is no evidence that MHL would actually work.
« Last Edit: June 13, 2020, 05:28:30 AM by dots_tb »

Offline Asdron

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #25 on: June 16, 2020, 09:23:36 PM »
Was able to pull a lot more current (up to 300mA @ 5V).
Usb drives now work mostly stable but I need to wait for parts to arrive to make it completly stable

Offline Asdron

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #26 on: June 21, 2020, 01:02:24 AM »

Say hello to Ecchissory Box  :D

Offline dots_tb

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #27 on: June 22, 2020, 06:55:35 AM »
Looking at the Chinese forums, it seems that there exists multi-ctn that has all the pins populated.

Link to original thread: https://tieba.baidu.com/p/5299733246?pn=1

Picture by OP:


This is most likely a micro-usb to multi-ctn adapter that can be found on Aliexpress, you can search for "PSV1000 adapter micro".

There are some on Amazon that command a hefty price tag:

JP: Click here

US: Click here
« Last Edit: June 22, 2020, 07:18:30 AM by dots_tb »

Offline lyzzz

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #28 on: June 22, 2020, 07:16:10 PM »
This is most likely a micro-usb to multi-ctn adapter that can be found on Aliexpress, you can search for "PSV1000 adapter micro".

Here's a link to the original product site: http://www.k-aclass.com/product/sasp0328.html
Easily 100 yen onwards from YAJ: https://page.auctions.yahoo.co.jp/jp/auction/u364879928

Offline W00fer

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Re: ECCHI PROJECT - the road Accessory Port to and OTG
« Reply #29 on: June 28, 2020, 03:16:14 PM »
It was rumored that the converters from Aliexpress for PSV1000 from the port on the bottom to microUSB are only for charging, not for data transfer.