maemo.org - Talk - N800 USB OTG Adapters/Dongles

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Re: N800 USB OTG Adapters/Dongles

Quote:

Originally Posted by jolouis (Post 148670)

Well after doing some tests I don't think the LAN speed is a factor at all; you're correct in that the CPU does get utilized when doing USB transfers, but the controller seems to operate in a different way than when doing network transfers as the speeds that I get when testing over the network are not the same as a direct USB connection. In the end using MaemoFTP I got sustained transfer rate of 700 KB/s (approx 5Mbps) across either Wireless or USB wired network; the CPU at this point maxes out and cannot push any more data across. I haven't tried with the browser, but I imagine if you do a similiar test you'll probably end up with the same sort of results (probably a little higher but around the same sort of range) in that the tablet will go quite quickly, but that's quickly in terms of Internet speeds, not actual LAN speeds.

OK, being curious, I'll run some netcat tests here, but your methodology seems sound. :(

Quote:

I know there's been a lot of work on mouse support (there was talk of an app that would poll for a mouse and enable it if found/etc), I just haven't kept up with that thread. None the less, just don't expect it to work "out of the box" under Maemo, that's all! Note I say Maemo, not "N800"... if you're running KDE, you're not running Maemo...

I recently got my USB mouse working, and ~~I'll be posting some stuff on that soon~~ I posted some stuff here. It's mainly useful for remote access.

Quote:

And when I say possible for the serial adapters, I mean I can get one or two of them for a reasonable price from the same supplier as my other equipment, so it's commerically viable even if there isn't a lot of demand. Some of the other things are not in the same boat, so I need to make sure there is a demand before I purchase them in quantity.

One more thing... I may have a lead on a VERY COOL USB cable/device, I'll give you more info when I hear back from my suppliers about availability.

Thanks,
-Rob

Cool! Keep us posted!

Edited: post is now up in usb-mouse thread. I really need to get another mouse, so I can stop switching desktop/N800. Also, then I can merge one and a Mini-B cable together into a dedicated tablet-mouse. That or a BT mouse...

Re: N800 USB OTG Adapters/Dongles

Quote:

Originally Posted by toby.c13 (Post 148860)

ohh.. so can the tablet support multiple usb usage?
say i use a external usb hub.. for the LAN network, keyboard n thumbdrive, will it work?

I tried to connect two drives to a USB hub, and the tablet sees both of them, so yes: it can support multiple USB usage.

Re: N800 USB OTG Adapters/Dongles

Quote:

Originally Posted by Jerome (Post 149357)

I tried to connect two drives to a USB hub, and the tablet sees both of them, so yes: it can support multiple USB usage.

woo.. alrite then.. :)
I will get 1 OTG adapter then a usb hub with 5 ports. :D
one for keyboard
one for mouse
one for thumbdrive
one for the network adapter (if no wifi)

but.. it will consume more power isnt it? :confused:

Re: N800 USB OTG Adapters/Dongles

Quote:

Originally Posted by toby.c13 (Post 149395)

You need a powered hub for that...

Re: N800 USB OTG Adapters/Dongles

I've been doing some further testing of my own here and had some mixed results with USB hubs; sometimes the powered hub works properly to drive a flash drive and other equipment, sometimes the tablet just gets mad and doesn't see the additional devices... so further testing on that required as others are saying there's been success. I'm hoping that for lower powered devices (i.e. keyboard, mouse, etc) an un-powered hub will work; the biggest hold back at the moment is that I'm still waiting on my latest shipment of connectors to come in. Once they arrive I'll have a few more goodies to offer up on the site including a cool hub, the Linksys NIC mentioned previously, an RS232 adapter that I've confirmed works properly, and a small powered Hub.
In the meantime anyone who's interested in trying their own networking/already has an adapter and a NIC, here's the package I built up:

Just open the link on the Tablet and choose to open the file with Application manager; it'll install the additional kernel modules for all supported NIC chipsets and set them to load at boot time; it'll also setup the udev rules for setup/tear down of wired networking.

Once the package is installed, simply go somewhere that you don't have wifi access, plug in your adapter with NIC connected to LAN cable, and after the "no file system found" dialog pops up just open your browser/or whatever and choose "WIRED" from the list of connections. That's it, works no problems.

When you're done to be safe make sure to disconnect the USB NIC from the adapter BEFORE REMOVING THE ADAPTER FROM THE TABLET. If you simply remove the adapter the tablet doesn't seem to get the disconnect called, so the IP info/routes never get cleared and the tablet tries to direct all traffic through the non-existent NIC. But that's it, that's as easy as I could make it ;o)

I should point out one important point here: although the package will load modules for all the complied NIC drivers, it only calls the scripts for the rtl8150 at the moment. This is because it was the only device that I had access to to read the udev information from. If anyone has another device that they connect and get to show up properly (you will have to manually call /usb/sbin/usbEthUp.sh) please let me know so that I can add it to the udev rules for others to enjoy.

Like I said I will be offering the Linksys NICs on the site in the next few days once I get enough adapters back in stock to cover things and keep people happy ;o) (and on the page for the adapter I'll be linking to the above package with instructions; I made it so easy that even my Dad can do it, so should be pretty safe!)

I'm going to take a look at your mouse post; with any luck there might be a way to setup a package like with the NIC so that if you plug a mouse in it will make the cursor appear/etc, and it will go away again when disconnected... (that'd be awesome to have working).

Thanks!
-Rob

Re: N800 USB OTG Adapters/Dongles

Thanks Jolouis! I received my adapters! Great job on the modding!

Re: N800 USB OTG Adapters/Dongles

- recv'd my adapters today... they look great and are very convenient (saves having to run host/otg scripts, and use 'longish' USB cables)... tks!

- i have found that using a powered hub is best accomplished by following these steps:

1. add power to the hub
2. plug in
3. wait for hub to be recognized
4. then plug in device into hub (such as external HD)

- my US$0.02, YMMV

Re: N800 USB OTG Adapters/Dongles

Quote:

Originally Posted by jolouis (Post 149588)

I'm going to take a look at your mouse post; with any luck there might be a way to setup a package like with the NIC so that if you plug a mouse in it will make the cursor appear/etc, and it will go away again when disconnected... (that'd be awesome to have working).

Thanks!
-Rob

I don't think you can do the cursor on/off; I think X has to be restarted for that. But I've not messed with udev before, and if you know your way around that, you should be able to get the mouse to start working when plugged in, and just leave cursors on all the time.
That's what I've got, except I have to manually run a script when the mouse gets plugged in.

It's really only very useful with the web browser, ported programs, and remote access (to me, at this point). But for those using KDE with K apps, it should work great.

Re: N800 USB OTG Adapters/Dongles

Got my adapter/dongles today.

I got it mainly to plug in my Kingston 4GB DataTraveler Pocket USB Drive that I primarily used to put a lot of podcasts that I can then hook up to my work PC (streaming audio's blocked at my work site).

'USB device not supported' -> File Manager opens up -> there's my thumb drive -> and there's one of my podcasts coming in loud and clear.

Forgot, though, the thingy's located under the kickstand which means I have to take PlayThing out of the Proporta case every time I want to use it :::sigh:::.

But it's great to be able to have the convenience of not having to depend on card readers or bluetooth transfers for getting things on/off or accessible by the N800 and my main computers.

Hurrah!

Re: N800 USB OTG Adapters/Dongles

Wholy Schnikes!!

Using the dongle and the drivers from Franklin for Ubuntu/Linux I was able to get the Franklin CDU680 EVDO Modem to light up and look as if it was trying to find an EVDO connection...

Who knows it might work directly w/o always needing the cradlepoint router...gotta fiddle a bit more. I am wondering though that two of the included files are complied and maybe they won't run on the NIT w/o recompiling for ARM?

But really this seems hopeful...