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bobdole369

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Everything posted by bobdole369

  1. Soooo, I've been wanting to get into cross compiling, partially because I'll need to code up a modbus implementation at some point once I've soldered on a serial port to the Zipit, partially because I wanted to putz. So I downloaded the Z2 dev environment (Linux with scratchbox ready to go in a nice virtualbox.. OMG) http://rayhaque.blogspot.com/2010/02/all-n...opment-kit.html And set about figuring out how to cross-compile. Starting with vim (failed), then onto x64 (vice), failed ./configure - needs some X11 libs and I have no idea how to get them into scratchbox. So some googling led me here: http://www.schoenke.com/tyler/nokia770/index.html#Frodo Which is where someone already did it! Going over to the main Frodo site and downloading the tarball got me the BASIC ROM and once that was extracted into the path she fired right up! Sort of useless tho. There aren't enough keys on the keyboard and I can't figure out how to type numbers or do run/stop or anything. Just an idea of whats possible!
  2. Yah its fairly simple, you are just sending data straight in via JTAG. You would solder up the pads, send the data via serial port, and then if you don't want the JTAG anymore, just unsolder it. I'm shocked that it actually bricked. I thought I did the same thing until I found the reset switch, hit it, which turned off the device, thenturned it back on to the original firmware. http://zipit2system.sourceforge.net/?page_id=5 This helps.
  3. Don't think its done for yet. Remove the SD card, Now use a paperclip to press the reset button on the side. Be plugged in when you do this. If nothing, then remove teh battery, then remove power. Put in the battery, then the power. You should boot up to either the openzipit logo, or the original firmware.
  4. Wow, just realized the CPU is an underclocked version of what is used in the Dell Axim X51V, which ran windows mobile 5.0-6.0 Has anyone tried to get WM to work?
  5. Just ordered the connector for the zipit. On the zipitforge page they break out a USB data line. Anyone know if the zipit is a host or a client device? I'm looking to add a battery/charge device and a constant headphone connector to use the zipit as a source for mp3 playback.
  6. Noting that. I used side-track, and was able to easily install and run prboom and openssh.
  7. I had a bit of an issue doing this: I'm using the rootnexus userland. http://zipit.rootnexus.org/ I needed to get into terminal and SU to root. Segmentation Faultsts... Found some files in /var/cache/apt/*.bin which I deleted. Now any apt-gets take like 2 hours to get to 98%, then segmentation fault again. Just my experience.
  8. You would likely need to port chromium over to ARM. I would think it easier to get Android on the Zipit. I am not a Programmer, nor do I play one on TV.
  9. You would suspect correctly. However there is a bit more to it than that. (making numbers up here) Efficiency is on a curve, where say at the low end (say 150W) the supply is 40% efficient (in which case the supply actually pulls 360W) and at 900W it might be 98% efficient (where it actually pulls 910W). Every extra watt (of inefficiency) is expelled as heat out the back or front of the unit. Just something else to think about. While ultimately ***better*** to have a larger than needed supply, its not always best to have the largest possible number.
  10. I also think it is a great idea. Grammar and spelling would improve greatly! Of course productivity would suffer, but I'm just that sort of masochist where it would be fun!
  11. I don't think this one is multitouch. But I did have the privilege of installing one of these for my company at the 2009 Fort Lauderdale International Boat Show. http://www.engadget.com/2007/09/08/hands-o...e-coffee-table/ I've got pics of it actually installed at the booth if folks want to see, but in essence the whole thing is just a MACbook pro, and the touchscreen is an overlay on top of the LCD panel. Its just a big ass remote in this instance.
  12. I'm proud to say that I'm a former smoker. I smoked a pack a day for 19 years, (since I was 11), (so you now know my age LOL). I won't be your typical asshole former smoker, other than to say that I hope those currently addicted to cigarettes find their own way to stop. It's no good for you, and the powerful addictive drug really does have a hold on you and it alters your mind man. www.whyquit.com - Cold turkey is the only way to go. I will call Djarum smokers just nasty though. I retch when I catch a whiff of those and I'm glad they are now practically impossible to obtain.
  13. Am I the only person who really doesn't like that movie? It's not even tolerable for me.
  14. If it weren't for Matt, I might never have known of esxi.
  15. ROFL at kr3w - srsly That pic of steve jobs holding one is comical already. Sort of like when I see one of those smart car deathtraps driving at like 75mph down the freeway. Not only are the engines I'm sure just at the upper limit, but its so funny to see them going fast. I keep expecting to see them go end over end.
  16. It also has an IPS screen with a multitouch TS. Already better than any netbook. Netbook users won't know the difference, they are too cheap to care in a lot of cases. The IPS screen is a cadillac. Shoot I think my wife spent $499 or so for her 22" IPS. (Shes a photographer so accurate color and viewing angle are very important.) I don't know if I'd call it "a big ipod touch". There is some processing and features taht aren't being used yet. Sure it runs ipod apps, but I bet tehre will be ipad only apps soon.
  17. I had incredibly good luck with a Dell Axim x51v. Don't think they make very many Pocket PC's anymore though. Skype over it's wifi was flawless. There were a number of SIP apps too.
  18. 64nd - if thats true - 6mbit is quite fast upload. As in OMG fast. To put things in perspective - my entire office of 20 odd people share a single 6mbit/384k line. So your uplink is 20x faster than what 20-something folks use all day at my job. 8ms ping - wow you really aren't leaving cox network. Try using the speakeasy test.
  19. mysql / RoR with drupal is a fairly simple CMS thats not too heavy on the hardware. CentOS will let you yum install just about all of that. Ubuntu a second choice.
  20. Generally speaking this is true. I'll explain. Yup specifically the +5 is compared to a 5V reference. Any differences result in either an increase or decrease of the PWM duty cycle. Yes, but not so much as you'd really notice. A bit exaggerated, but again it is true. Actually what you need to worry about is that all the outputs will pull power from each other. i.e. PSU1 has an output of +12.04V PSU2 has an output of +12.15V. Both are completely within spec. However connecting the +12.04 and +12.15 creates a 0 (or very close to 0) ohm load with a 0.15V drop. This means you'll pull power from one supply to the other, until the voltages are equalized by the various regulation methods as noted by your other forum poster. What this means is that if one power supply comes up faster than the other one - you could have a several amp or more short circuit. I would surmise that its best to bring one up a few seconds after the other. Another complication is that as mentioned, there will be already the power present on the regulated rail before the supply thinks it should be there. You might not even be powering up PSU 2 - depending on its startup method.
  21. Been looking for an MMO - hoping this might be it. I just tried Eve Online. Sorry man. No Effing Way. That game made my head asplode. 5 days later and I'm still using help to quit. Either I'm a complete moron, or the game is just that freakin hard. In any case - here is a link to some STO open beta keys. http://www.videogamer.com/features/competi....html#formentry
  22. Hmmm, arrange with the datacenter to place teh scanner at the POP on the shelf with the machine? webcam to the scanner face?
  23. Just so I understand - you want the audio feed to be local to you, and the world will be a "computer which can handle the load" in a datacenter. It matters not this, as any way you look at it, you need the audio feed to come from your scanner out to "somewhere". If the server program would support and use multicast, you essentially only send out one stream to the world, and everyone connects to that feed. Any server program worth its salt (shoutcast/WME, etc) already uses this. So unless you really mean you want to host the containing web in the real world, there is no point.
  24. OK excellent. Now i get what you mean. It *would* work that way (i.e. it would light up), but talk about nasty sound! Ah but no mention was made that there existed a current limiting resistor! Now that I've actually looked at the thing, there very well might be one buried somewhere, it'd be an SMT 1k resistor or some such. Yup this means you wouldn't fry the amp as easily.
  25. wowza, the misinformation from all around just sort of conglomerates together into a big steaming pile of poo doesn't it? There are a number of ways to light a bulb when the music gets loud. Every method I've seen discussed here will distort the living bejesus out of the sound. Metatron, the 2940CT is a DC device. In addition as the OP is talking about using 1000W (well I seriously doubt that, maybe peak to peak or some input power measurement, but lets say 200W RMS, as I've actually got that running in the back of my PT cruiser). Ohms law says at an impedance of 4 ohms, 200W Roughly 7 amps RMS. roughly 29V RMS. Doing the maths you get a peak of about 10A and 41V. Looking at the datasheet - the absolute max raiting of the 2940CT is: -30V DC input, and +45V DC. So at about 230 degrees around the first cycle you are exceeding its max rating. Smoked device. Not to mention that you are really distorting the living fuck out of the signal to the sub. Moonlit: What? that config actually doubles the voltage seen at the diode, assuring destruction, in the event the amp is a push/pull type. The "switchable bridge" amps that would depend on the difference between the 2 channels for a voltage drop. Not too likely. Also with a regulator, since its a high voltage AC signal, and IC based 3 terminal regulators are only DC devices, you quickly smoke them. Read my voltage calcs above. While the amp is run on 12V, once you get past about 200W the voltage output on the speaker terminals is quite enough to kill you (really anything greater than 30V will push enough current to stop your heart you get nailed in the right spot.) Easily 30V at 200W into 4 ohms. The safest silly light device I would consider using is a string of 60 christmas lights (old school bulbs) in parallel with the sub. It will phase shift a bit, but it won't do really fucked up things like conducting part of the cycle, and burning the rest. h3%5kr3w and beakmyn have the most practical ideas. Oh and h3%5kr3w - thats called the "short" before the "open". i.e. the LED short circuits, connecting the positive and negative at high voltage. Either the amps output FET self destructs (actually shorts due to the spark across the depeletion region) from the sudden voltage change, or the massive EM field on the woofer causes a blown voice coil (EMF) or both. Then the LED opens... In short, the best way is to use some sort of mic and controller running the LED. You don't want bad audio or broken components do you? Proskater - you don't have a radioshack store within skating distance of you? LED's cost like 15 cents. They even have RS stores in the mall. I hope by now you've realized how horrid an idea this is. I hope you don't really just connect an LED (which is a diode and will dead short for a good 140 degrees of the cycle while emitting light) across the output leads in parallel with a speaker. Buhbye amplifier....
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