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by reiuyi
Tue Nov 22, 2011 2:01 pm
Forum: General discussion
Topic: overclocking
Replies: 92
Views: 17724

Re: overclocking

<t>Awesome, I remember back when I had a Motorola MPx200 with a 133mhz arm processor (Texas Instruments OMAP 710), there were some tools available to overclock the CPU. I think I got it up til around 180mhz before the device crashed due to instability. The fun thing with it was that you couldn't bre...
by reiuyi
Tue Nov 22, 2011 2:01 pm
Forum: Other projects
Topic: Cases for the Raspberry Pi
Replies: 866
Views: 392739

Re: Cases for the Raspberry Pi

I'd love to implement the raspi into a keyboard, together with a small battery (2 cells of li-ion probably), and various extension cords to get all connections to the back of the keyboard.

C64 all over again!
by reiuyi
Tue Nov 22, 2011 1:20 pm
Forum: General discussion
Topic: Using Micro USB Port for access to memory card
Replies: 1
Views: 642

Re: Using Micro USB Port for access to memory card

<t>This seems beyond the scope of its educational purpose. The current revision of raspi does not have any data connection between its microUSB port and any logic on the board. Only 2 cables are connected; being volt+ and volt-. The device is designed around being merely a USB host and has not been ...
by reiuyi
Sun Nov 20, 2011 11:38 am
Forum: Other projects
Topic: Wireless HDMI port
Replies: 9
Views: 17635

Re: Wireless HDMI port

<t>@Michael<br/> <br/> I hate to ask but what exactly are these manufacturers planning on doing?<br/> <br/> The 2.4ghz and 5ghz bands are so full in most neighbourhoods, you can hardly push 10mbps through them without huge packet losses or without turning your house into one big Faraday cage.. In th...
by reiuyi
Sun Nov 20, 2011 11:20 am
Forum: Other projects
Topic: Yet another RPi-Tablet questions thread
Replies: 2
Views: 1586

Re: Yet another RPi-Tablet questions thread

<t>It'd be much more interesting to acquire the necessary knowledge to link up an ipad (2) screen with its digitizer to make a tablet.. It's not that expensive and it's by far the best screen you'll ever see; way higher brightness and contrast than any shatty random laptop display.<br/> <br/> Also i...
by reiuyi
Sat Nov 12, 2011 1:07 am
Forum: Other projects
Topic: rechargable battery
Replies: 11
Views: 2839

Re: rechargable battery

<t>Just look for "dc step up 5v" on ebay and tick "free shipping" on the left. There'll be thousands of simple ready-made circuit boards doing exactly what you what to do. And they aren't even that expensive, the Chinese do it cheaper than you can do it yourself XD. I can't recall the names of the u...
by reiuyi
Fri Nov 11, 2011 4:57 pm
Forum: Other projects
Topic: UPS RaspberryPi C64-style (difficulty: moderate)
Replies: 3
Views: 2921

Re: UPS RaspberryPi C64-style (difficulty: moderate)

<r>Quote from Rukbat on November 11, 2011, 16:26<br/> A word of caution. The reason UPSs use lead-acid batteries is that LiIon batteries aren't designed for the purpose you want to put one to. I don't think the battery will last very long being subject to use right at its peak charge for long period...
by reiuyi
Fri Nov 11, 2011 4:17 pm
Forum: Other projects
Topic: Need for an App store for RB programmers
Replies: 64
Views: 8385

Re: Need for an App store for RB programmers

<t>Quote from Nutmeat on November 11, 2011, 14:20<br/> Then those people can just focus on macOS, Dalvik, and visual studio.<br/> There are lots of other forums on the web that can help with that. Trust me, there's a whole money centric corporate culture of greed in software and hardware out there t...
by reiuyi
Fri Nov 11, 2011 3:43 pm
Forum: Other projects
Topic: UPS RaspberryPi C64-style (difficulty: moderate)
Replies: 3
Views: 2921

Re: UPS RaspberryPi C64-style (difficulty: moderate)

<t>During the past couple of months I thought a bit about the possible applications of a raspberry pi. It's quite a universal device with lots of uses and many of us have the technical or creative skill to do many things you'd normally not think about. I mean, I could use it to build an aquarium con...
by reiuyi
Tue Oct 25, 2011 11:31 am
Forum: Other projects
Topic: Android
Replies: 34
Views: 9291

Re: Android

<t>In all honesty Android is a pretty bad linux operating system<br/> <br/> To think that we nowadays believe we need more than 1024mb ram and more than 600mhz to pull a menu across a 800×600 screen is sick. Even with those specs, most tablets STILL can't do that at more than 20fps (stuttering). Thi...
by reiuyi
Tue Oct 25, 2011 12:12 am
Forum: Other projects
Topic: Guitar amp modelling
Replies: 25
Views: 14757

Re: Guitar amp modelling

<t>Behringer produces low-end USB soundcards that cost close to nothing. I even got one for free when I bought a keyboard a while back. I think it's called UCA 222 or UCA 202.<br/> <br/> The quality isn't really spectacular, though it's just above your average chipset and it has in/out, a headphone ...
by reiuyi
Mon Oct 24, 2011 12:07 pm
Forum: Other projects
Topic: Great tutorial on linear voltage regulators.
Replies: 2
Views: 1799

Re: Great tutorial on linear voltage regulators.

<t>You'll have to wait for exact details on input voltage margins. Best bet is that it'll be +/- 5% like most 5volt devices<br/> <br/> Just cash out for a voltage regulator, they're only a couple of dollars. LM7805 is awful, LM2595 or LM2596 is all right. NiMH batteries (regulated) should be suffici...
by reiuyi
Mon Oct 24, 2011 12:01 pm
Forum: Other projects
Topic: Low cost monitor
Replies: 69
Views: 38292

Re: Low cost monitor

<r>Quote from eggn1n3 on August 31, 2011, 11:33<br/> I just checked <URL url="http://www.mimomonitors.net/">http://www.mimomonitors.net/</URL>. For $155 USD you have a 7'' touch screen. "Glue" a R-Pi at the back and you can build yourself a clock radio. You don't even need to program it: <URL url="h...
by reiuyi
Mon Oct 24, 2011 11:34 am
Forum: Other projects
Topic: 9v Battery Power
Replies: 9
Views: 9069

Re: 9v Battery Power

<r>Look into this <URL url="http://www.dealextreme.com/p/8.....ubec-45214">http://www.dealextreme.com/p/8.....ubec-45214</URL><br/> <br/> It's based on de LM2596 and has about 80% efficiency converting 12v to 5v. It's 3A max. For that price, you can't really go wrong. The LM7805 is trash.<br/> <br/>...
by reiuyi
Sun Oct 09, 2011 6:33 pm
Forum: Other projects
Topic: Cluster (Bramble...) Design Discussion (Advanced)
Replies: 170
Views: 83958

Re: Cluster (Bramble...) Design Discussion (Advanced)

<r>Besides the choices in design, I am interested in what could be done with a cluster of raspberry pis<br/> <br/> Due to their low power consumption and relative high speed, I can imagine using a small stack for archiving large amounts of documents and other kinds of data. I've seen those <URL url=...

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