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5851  Community / Bar Sport / Re: I am trading my arduino shield and kits for old stuff again! on: April 11, 2011, 07:56:18 am
Man, I used to have so much old stuff that you would be very happy with.
It's a shame it all got caught in a fire and alot of it is lost (ancient stuff really).

Good luck in your scavange!

Sorry to hear about that. There's a lot of these old stuff that are going straight to junk or worse, gold extraction. I'll try to save as many as I can. Might open a museum in the future.
5852  Community / Bar Sport / Re: I am trading my arduino shield and kits for old stuff again! on: April 11, 2011, 07:53:50 am
Focalist,

I knew there's got be some story behind "a pair of C400". I'll PM you later today.
5853  Using Arduino / Displays / Re: Artifacts on GLCD? on: April 10, 2011, 07:12:17 pm
Molehs,

Thanks for taking the time to update us. I believe our discussion will be useful to others thinking about doing the same.
5854  Community / Bar Sport / Re: I am trading my arduino shield and kits for old stuff again! on: April 10, 2011, 07:10:58 pm
Focalist,

I'd be interested in the overdrive, pair of C400 and the Xeon cpus. Any story on the pair of C400? They don't work as a pair on dual PII mobos. Are the Xeons and C400 all SEC (single ended cartage) packaging or Socket 370? I'd prefer 370 to save you postage and my space smiley

Let me know what else you have.

If I had space I would consider saving complete systems myself but by all means please keep your complete systems in one piece, for you or someone in the future to enjoy. I only have limited mobos and one Amiga system (cheap one).
5855  Using Arduino / Displays / Re: Artifacts on GLCD? on: April 10, 2011, 06:09:51 pm
The old fashion IDE cable should be able to carry at least 33Mb/s communication without problem  smiley-roll

So it's strange to me that you can't pass signal to a slow display. Did slowing down the display solve your problem?
5856  Using Arduino / Project Guidance / Re: Help Choosing Dev Board for a Project on: April 10, 2011, 03:04:45 pm
voodoo, welcome to the forum! I'm not very familiar with measurement so I will suggest on hardware only:

1) Ardweeny + protoshield (this shield? http://www.solarbotics.com/products/52125/)
I just looked at the design. I don't like it too much! Could be fragile. The microcontroller pins are soldered to male pins. I bet after many insertions the pins could get damaged. On a second thought, with the protoshield I found, it's way less of a problem if you seat it on the protoshield and don't disturb it.

2)Protoduino, chip is not included? Making it not that good of a deal for the price. I doubt there is a lot of support or users.

3)Boarduino seems pretty good from a reputable seller LadyAda. There should be no problem with support and customer base but there is no shield for it so going from breadboard to having an LCD buttons shield is not possible.

Well, my suggestion after the discussion would be 1). You will benefit the fact it has a shield that you can plug in an LCD buttons shield on top for final installation. There's screw holes too. Important. On the other hand, for easy of use, you should get an arduino UNO to prototype with and only work with the ardweeny when you're ready to move from breadboard to a project box.

[Self promoting alert] Here is my version of LCD buttons shield. I consider it the best with all the software and support:)

http://liudr.wordpress.com/phi-2-shield/
5857  Using Arduino / Displays / Re: Artifacts on GLCD? on: April 10, 2011, 09:27:56 am
So this 40-wire cable, does it have a mechanical key (obstruction on pin 28)? If not, try the other row of pins maybe? That's all I can think off. I'll test mine in a little bit.
5858  Community / Bar Sport / I am trading my arduino shield and kits for old stuff again! on: April 09, 2011, 11:59:26 pm


Last time I traded my Phi-1 shields for old computer processors. It was a big success. A dozen of so of my boards/kits made it to many parts of US and Europe. And I received much needed items for my computer processor collection.

Here's my favorite picture:
The left side is a part of a mother board for a pre-Pentium processor. A friend couldn’t remove the processor without damaging it so he cut the board and shipped it with other processors all the way from Europe so I could extract the processor with a CPU extraction tool (a miniature rake with Intel logo). The right is a surface mount processor another friend painstakingly removed from a board with professional tools among the dozen or so other surface mount processors and other processors from CA.


This time I am expanding to classic/old computer games software (must be original) and even books (maybe within US for shipping reasons). "Official rules" are here:

http://liudr.wordpress.com/2011/04/09/exchange/
5859  Community / Bar Sport / Re: New OSHW logo on: April 09, 2011, 09:42:59 pm
I would use several complete gears with different colors and locked together maybe even cast the world map (2-color) onto the gears or use small gears to fill up a world map to represent world-community.

This only seems to me like a broken piece of hardware. I know it represents my skill level but I just don't want to admit. smiley-mr-green
5860  Community / Bar Sport / [picture trade] Your messy breadboard pics for my Arduino cable organizer on: April 08, 2011, 11:08:22 am
I have just got update that my phi-connect "Arduino wire organizer" has rolled off the production line and into a box inside an oversees postal service facility. What does phi-connect do? It helps you organize your arduino. If you look at your arduino, how many jumper wires are coming out of it and landing various places on your breadboard? Spaghetti monster residing on your arduino and breadboard? If you're willing to organize your project with the phi-connect, you will send one to you free (limited supply), to exchange your messy pictures, and better pictures after using the phi-connect. With this system, you can quickly connect your arduino to a different project with a ribbon cable and eventually use the same thing in permanent installation. In case you want your arduino back, pull the plug. The installation is not disturbed.

Here's some pictures from the fab house, not the best angles:

This goes on arduino, the right side connects to a ribbon cable connector:

This goes on breadboard, the bottom side connects to a ribbon cable connector:


Details are here:
http://liudr.wordpress.com/2011/04/08/phi-connect-is-coming-soon/
http://liudr.wordpress.com/gadget/phi-connect/
5861  Using Arduino / General Electronics / Re: How do you calculate total EEPROM memory? on: April 07, 2011, 03:58:22 pm
The 24LC256 has 256KiloBits. Since each Byte is 8 Bits, then 256KiloBits/8Bits per Byte=32KiloBytes=32KB The address size doesn't represent the size of the storage. It only represents the maximal size of storage for this entire line of products. So 24LC512 will be using all that 2^16=65536 bytes address space or 64KB. The 24LC256 only uses half of the address space.

I agree with you on what to do when trying to learn. If you choose a popular model, you can still work all you want on it and still have the option to look at others' work to better yourself or help you when you're stuck. If you use unpopular parts, you will receive less help. Also time is limited, so I prefer trying more ICs than spending all my time learning all the details of one IC. Just my 2 cents.
5862  Community / Bar Sport / Re: Uno supplies to distributor delayed again? on: April 07, 2011, 12:40:51 pm
It's 2011. The 2009 model has been discontinued since latter part of 2010.
5863  Community / Bar Sport / Re: Can I search a topic under a specific board? on: April 07, 2011, 12:38:26 pm
Thanks biocow. I thought the picture was just for fun. I'll try google next time I need to find something on the forum. Other forums have better search functions such as search author and date.
5864  Community / Bar Sport / Re: Can I search a topic under a specific board? on: April 07, 2011, 10:21:20 am
Wow yes. Any quicker way to get to it? I had to do sort by author and go by 10s of pages. If somebody else posted that and I didn't remember the OP's id, I'd never find it.
5865  Community / Bar Sport / Re: I hate when this happens on: April 07, 2011, 09:58:22 am
I see. Need new probes?

When I was going through your long post and I caught iTead in the middle I almost had a heart attach, thinking that maybe iTead was to be blamed! I just dished out a couple hundred bucks for their PCB service smiley-roll-sweat. I felt relieved when I read a few lines down about the connector. smiley-lol
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