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We're moving! I need the main domain entry points to go to my company's site, so for now I'm dropping the alias that directs my domain here. You can still access the site using: I'm going to set up redirects for all the old links, so the site should just keep working. Please leave a comment if something appears broken. Thanks! Continue reading
Posted May 6, 2015 at Not Nearly Enough Time
@Neurogadget: Why not use an iPad and the Kindle app for iPad? Wouldn't the XWave work directly with that?
@Neurogadget: Very likely not as described. The bluetooth module is acting in a serial port mode... probably not compatible with the headsets. However, you could use a small microcontroller with an ADC to simulate the microphone port the one set usually uses. I'd do some kind of passthrough to allow a replaced console to pass through the microcontroller, else you'd lose the console and have to find some other way to interact with the unit.
@Kuba Radzikowski: I don't have the bluetooth module currently to check... but looking at the schematic on Sparkfun's web site, it looks clear that I changed where one end of R4 connects to. Change the connection on R4 which is currently tied to VCC to go to 3.3V instead. You'd also need to do this with R8 if you use RTS, which I didn't.
@A Facebook User: Sorry, I've moved on from the Kindle at this point. The virtual machine I used for compiling for Kindle has been updated for WebOS and LTIB ARM targets. The "right toolchain" link above in the "Compiling Qt for the Kindle" section is what you need, along with a recent Scratchbox 1 install.
@Zachary Rubin: Nothing usable. I now just use a TouchPad for viewing schematics and datasheets while soldering... which was my entire point for having a Kindle. My wife used the Kindle for a bit, but now she's using an iPad.
I just thought I'd add that the Qt 4.6.1 on webOS 2+ appears to be -extremely- limited in what it delivers. The QWS plugin interface might be good, but almost all widgets are left out, etc. It appears they had a very specific purpose in mind and didn't deliver many more classes than they had to.
@Zeren Ozturk: Not yet, I don't have one. I am hopefully going to get a TouchPad whenever they release it.
Toggle Commented Jun 6, 2011 on Qt on the Palm Pre at Not Nearly Enough Time
webOS 2.0 appears to contain Qt 4.6.1. (Check the open source page on Palm) It's possible this is part of the reason 2.0 won't fit on a Pre Plus, etc. (The system partition is -way- too small on the earlier Pre models) So, it should be a valid target from a Preware app point of view, although I don't have 2.0 so I'm not entirely sure. Actually, looking at the patch file they deliver it appears they have put a pretty decent effort into adding Qt support, So, things look promising.
I had a pretty nasty day Friday as I suppose many Qt developers did. There are suddenly a huge number of Qt developers out there who have no mobile platform. HP and WebOS has a huge opportunity here. These devs are not going to go to .NET in any significant numbers. If WebOS adopts Qt as a native-code platform, or even just as an alternate but supported framework... wow. Just think of it. They should take quick advantage of Nokia's massive betrayal and give these guys a home. Nokia's marketing on Qt pre-Friday has a basis in fact. Qt is... Continue reading
Posted Feb 12, 2011 at Not Nearly Enough Time
Okay, I've put up plugin source, my build folder and scripts for building the packages, and a new set of packages to test. Let me know if they work!
@h1uke: great, thanks! I can host rebuilt packages if you want (what name would you want shown as a credit for the update?). I do plan to release code, but I've been absolutely swamped with work for a few months now. (It is easing up a little)
Here's more or less what I've got for a build line for Qt itself: ./configure -D QT_NO_QWS_MULTIPROCESS -prefix /media/cryptofs/apps/usr/palm/applications/net.griffin.qt/qt -rpath -opensource -embedded arm -openssl -make demos -make examples -verbose Change the applications path to your own, of course.
Toggle Commented Aug 4, 2010 on Qt on the Palm Pre at Not Nearly Enough Time
How small are the contacts? You could try some plastic mount with Pogo Pins. You can get anything made in plastic these days using rapid prototyping (Redeye RPM, etc)... if you actually need anything more complex than a little plastic rectangle with holes drilled in it. There's also a chance the Linux Input API would let you push keystrokes in to the system, but I'm not sure if the Kindle framework would use it.
@electrofreak66: Not yet. I was looking into that... it doesn't look too bad. So, if I can get around to it I'll give it a shot.
Toggle Commented Mar 9, 2010 on Qt on the Palm Pre at Not Nearly Enough Time
I'm currently getting the source code up on gitorious. I've got developer access now on PreCentral, but the instruction video explaining how to set that up won't play on my Linux box. So, I'll get around to figuring that out in a bit. I can't think of any technical reason the latest package couldn't be available officially at the Palm App Store. It no longer requires any install or removal scripts. I'll look into that after it's at least in Preware.
Toggle Commented Mar 8, 2010 on Qt on the Palm Pre at Not Nearly Enough Time
So here it is: Background A client of ours, 1st Detect, is developing a miniature chemical detector. This is a fairly cool bit of technology that will help sniff out the nasty stuff in airports, factories, battlefields, etc. A while back we took the software for that system and converted it to Qt. This was so that a single board computer running the chemical detector could run Linux, while maintaining the option to go back to Windows if they had to. (We also have it running on a Mac) A nice side effect of this was that mobile platforms became... Continue reading
Posted Feb 25, 2010 at Not Nearly Enough Time
The current usage is not measured (my Fluke meter's current mode fuse is blown at the moment), it's from the RN-41 datasheet. Standby/idle usage is 25ma, connected (low power sniff) is 8ma. The Bluetooth Mate board probably uses a little bit more (regulator, etc) Reducing the scanning interval like Bernhard said would help, but it's not in master mode.
Looking here: You can see that the Kindle 2 still has the same 4 big pads for the serial port under the gray bezel. So, it's doable. The problem is making room for the Bluetooth module somewhere. There -may- be room for it in pretty much the same place I put it on the DX, if you cut out some of the white plastic.
Try re-installing the Sudoku package, by copying the update_install_sudoku_???.bin to your Kindle, then running "Update your Kindle" from the settings menu. It sounds like it didn't install for some reason.
@kindx: So, the simcard socket is the USB2 connection? There are pads on the US DX for a sim card, but I wasn't brave enough to do too much with it. I saw the SD card pads, even soldered on a connector I happened to have lying around... before I noticed all I/O pins on it are shorted. There are probably resistors pulling them all to some common point to avoid floating some microcontroller inputs, since it's unpopulated. I never removed the top of the box shield, so I didn't explore much further.
Okay, thanks! I may try the scanning interval change. I saw that, but I didn't want any problems making a connection if I got it wrong. The power usage is high enough to be worth figuring it out, though. The blink interval is new to me, so that's cool. I'll do that. I thought about removing the power led, but it's really the disconnected state that is active 99% of the time.
Well, it's possible to remove the Whispernet module and put in a Wifi card. Then you'd need to change the web proxy stuff to stop going through Amazon. I suppose if there was a PPP-capable WiFi (or if you put another microcontroller in there managing a WiFi and present a PPP interface) you could make it work with the serial port, like this uses it for Bluetooth.
Get your apps for Kindle, right now! I've compiled the Qt software platform for the Kindle... and I've written plugins for the e-ink display, the keyboard, and the fiveway. On this platform, I've created a great little sample app: Sudoku! Free Edition. 5 difficulty levels (easy, medium, hard, fiendish, and diabolical) 250 pregenerated boards (in the free edition) Custom mode to add your own game (from your local newspaper, for instance) Optional autofill of scratch marks Strategy view mode to easily see potential locations for each number Save and load as often as you want (keep that hard one for... Continue reading
Posted Jan 29, 2010 at Not Nearly Enough Time
I got an Amazon Kindle DX for XMas. I wanted one mostly for viewing device datasheets (PDF). I should say I do like the Kindle, and I will keep it (anyway there's no choice now). However, the PDF viewer is very disappointing. Really, that disappointment is mostly for one reason: No table of contents! I don't know who uses PDFs without TOC... it's terrible! In the past, I've passed up ICs in the chip selection process for products/projects solely because they had datasheets without TOCs. So, Amazon... no TOC support? Seriously? Anyway... I decided to start hacking on it and... Continue reading
Posted Jan 26, 2010 at Not Nearly Enough Time