November 08, 2024, 08:46:18 PM

Pinguino micro - USB OTG connector

Started by M@rcel, May 24, 2013, 11:38:32 PM

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M@rcel

Hello,

I am developing an application which uses USB OTG. The micro-board has a mini-AB connector, but it seems that this is no longer an OTG-approved receptable. Micro-AB is the standard now. Only mini-B plugs are still officially approved. See: http://en.wikipedia.org/wiki/USB_On-The-Go#OTG_mini_plugs

Searching the internet shows that mini-A plugs are not widely available (anymore). This is a real show stopper. How am I now safely to detect if my app should act as device or as host?

Hope you can help!

Best regards,

Marcel

LubOlimex

Hey Marcel,

Yes, we are aware of the deprecated mini-AB connector of the OTG standard. While it is unlikely we would update the older designs with the micro-AB connector (a lot of our users have implemented the product in their projects). The micro-AB connector is still supported (despite the OTG standard now requiring micro-AB).

Probably in our future boards with OTG connector we would switch to micro-AB.

Best regards,
Lub/OLIMEX
Technical support and documentation manager at Olimex

M@rcel

#2
Hello Lub,

Thank you for your reply. Do you happen to know is adapters exist? This should be an adapter(cable) with a micro-AB female on one side and a mini male on the other. Important is that all five pins are wired straight through.

Then I could expose a micro-ab to the outside world.

Best regards,

Marcel

LubOlimex

Hey Marcel,

I'm not completely sure if there is a reliable adapter. We haven't tested such. But there are some adapters that seem like with the right connectors at least:

http://www.miniinthebox.com/micro-usb-female-to-mini-usb-male-adapter-cable_p472018.html?pos=ultimately_buy_3 ; http://www.amazon.com/Motorola-micro-Female-Adapter-Converter/dp/B004BBJNHK

Once again I'm not completely sure whether they would work with the OTG version, would be nice if somebody that actually tried something like that tells about his experience.

Best regards,
Lub/OLIMEX
Technical support and documentation manager at Olimex

M@rcel

I'll try and report back on this cable. Will take several weeks, though...

Dylan

I am considering ordering a Penguino (since Duinomite doesn't do OTG simply), and mini is a problem when mini-to-micro cables don't exist.

I've bought both mini and micro adapters, but they are from mini/micro-B to regular A. Which turns out to make no sense.

Easy OTG is essential for what I want (mobile phone as device, PIC32 as host). It goes without saying that cables need to exist to connect them!