N810 + pyDance + USB Host Mode + Dance Mat

Most of the cool hacks these days are done using the N900 for obvious reasons. For this little experiment, I needed the good old N810 with its USB Host Mode (as the N900 doesn't support USB Host Mode right now) to get things going. An alternative approach would be to use BlueMaemo running on a N8x0 (with a USB device attached) acting as Bluetooth HID device for the N900 and running pyDance from the N900 on the big screen with its TV-out.

Here's a walkthrough video on how it's done:

I hope to post the packages needed to get this going shortly. Attila was kind enough to package the joydev.ko kernel module for Diablo, so we're just missing pygame/SDL_mixer with OGG support in the repositories. It's not Stepmania, but it works just as well with only minimal code changes.

Charging a BL-5J (N900) battery in the N810

There are several reasons why you would like to charge your N900 battery in a N810. Maybe you have a spare battery that you want to charge while using the other battery in your N900, or maybe your N900 refuses to charge the battery by itself. Please note that even though it works for me, the standard disclaimer applies - it's all your fault if this destroys your devices and/or batteries :)

Now, let's have a look at the pinouts and connectors of both batteries:

So, the connectors seem to have the same size, even though the batteries do not. Trying to put the N900 battery into the N810 is not straightforward, as there is a white piece of plastic that prevents the battery from getting close to the connectors. The solution is to simply use the N810 stylus as a lever to push the battery towards the connectors:

After the stylus and battery are fixed, simply connect the N810 to the power adapter, and it should start charging. Thanks to Quim for this helpful hint :)

Fullscreen and portrait modes for Panucci

Summer is always nice for travelling around, especially by train, which is quite cheap here in Austria, if you have the Sommerticket. Given that, I find myself having more time for listening to podcasts, and Panucci served me well so far.

Panucci, by the way, is a resuming podcast/audiobook player for Maemo.

There were just two annoyances until recently: First, there was no fullscreen support (yeah, a no-brainer, but it simply was not implemented..). Second, the UI looked ugly when the screen was rotated to portrait mode. And I wanted to play/pause the currently-playing podcast by touching the cover art. After a day of hacking, this is the result:

You need Panucci 0.3-7 (which entered Maemo Extras today) and enable support for screen rotation on your tablet. After that you can listen to podcasts (and audiobooks/live concerts) and hold your tablet like this. If you only believe moving pictures, watch the live demo on YouTube.

As an added bonus, Panucci is now available for Fremantle, although I believe we have to wait for the PyMaemo guys to fix bug 5026 before supporting portrait mode there (if the instructions on this Wiki page are correct).

Efficient text input shortcuts on N800/N810

These "tricks" are scattered around the web, but I have not found a compact, to-the-point post with all the shortcuts that we can use on the on-screen (stylus) keyboard and with the hardware keyboard, so here it is:

N800/N810 on-screen stylus keyboard gestures

• Space: Tap and move right
• Enter: Tap and move down
• Backspace: Tap and move left (keep the stylus on the touchscreen and move to the right, then left again, etc.. for multiple backspace keypresses)
• Shift inversion: Tap the character you want shifted and move up (also works for the number block and its special characters)

N810 hardware keyboard shift+Fn alternatives

• Shift single character: Press shift, release shift, then press character
• Single "blue" character: Press Fn, release Fn, then press character
• Shift lock: Press Shift twice (press shift once to leave the shift lock mode)
• Fn lock/"Number mode": Press Fn twice (press Fn once to leave the Fn lock mode)

The Single "blue" character shortcut is helpful to enter special characters and numbers on the left side of the hardware keyboard with your left thumb only, as there is no Fn key on the right side of the keyboard.

Update: Timeless pointed out that these are well documented in the OS2008 "Help" application under "Text input methods" and then "Virtual keyboards" and "Integrated keyboard". The latter even includes another hint for entering accented letters and umlauts: Hold down Chr and press the letter key repeated until the desired accented letter appears. Even if you normally don't read the online manual, these two pages are worth reading.

Tennix 2009 for Maemo

The updated version of Tennix, the open source tennis game is now available in Maemo Extras for Chinook, Diablo and Fremantle (anyone with Fremantle hardware care to test if it works correctly? Thanks!). The 1.0 release has been announced to the public in February already, but I have only now had time to create a proper package for Maemo. It plays fine with stylus or the D-Pad.

Here is a gameplay video if you can't wait to download it onto your tablet.

Repurpose your tablet's car mount

If you do not use your car that often, and have built/bought a car mount for your tablet, why not repurpose it and stick it up to your desk near the main monitor? Having Mauku running in it which lights up the display whenever someone posts updates surely is nice. Some other use cases are monitoring servers with an open X-Terminal or listening to some music/podcasts with the media player of choice.

I built mine by buying a gooseneck mount and screwing the included car mount onto it. This still allows me to use the mount in the car, too.