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Post by Dingo on Dec 30, 2006 20:47:34 GMT 10
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Post by Dingo on Dec 9, 2006 12:41:45 GMT 10
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Post by Dingo on Dec 1, 2006 19:51:42 GMT 10
Yeah, it used to be a lot easier to get OSD chips.
Have you looked at Dontronic's modules? I'm not sure if they use parts in stock these days.
I know the MC1377 was good, there is a supply of them at a shop in Sydney or you can buy the A520 TV-out module for Amiga 500s on eBay and cannibalise them. .....not really the best way I know......
If you need simple TV out, there are a few PIC/AVR projects out there for really simple fonts etc but I'm not sure how they go with sync-locking
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Post by Dingo on Nov 21, 2006 21:31:37 GMT 10
Quantum also make a cheap touch sensor IC, even just the datasheet is worth looking at to see how they work.
The basic one is the QT110 - Touch Sensor IC
Futurlec sells them too.
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Post by Dingo on Jul 3, 2006 20:18:20 GMT 10
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Post by Dingo on Jun 30, 2006 20:53:10 GMT 10
hmmm, very cool. Those Sayama motors look very tempting.
BTW, do you have any info on the cameras and the worm drive gearboxes?
Thanks
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Post by Dingo on Aug 31, 2006 19:12:29 GMT 10
Now that sounds like a very good idea indeed. I'm eager to try it out now, thanks.
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Post by Dingo on Aug 30, 2006 20:30:19 GMT 10
Yeah, I'm very interested in hearing everyone's experiences with them. I've always balked at the ostensibly high price of these sheets and the photoresist ones. Although you can get quite a few designs on an A4 sheet. NExt time I'm hitting the limit of fine traces with the glossy photopaper I'll look into these as the solution, thanks
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Post by Dingo on Jan 14, 2006 21:27:13 GMT 10
Here my some of my tips for homebrewing PCBs when using heat transfer method:
1) Always include some ground planes or similar large areas of copper. Whether needed or not.
Reason: I've found that if they are not included, when you place the pattern on the hot copper, it might shift and pull some of the longest traces. This has happened many times to me until I tried adding big planes. Now it seems that the planes help stabilise the pattern. Well it at least has stopped my long traces nto transfering.
2) Use the cheapest paper - it seems to not bond with the ink as much as more expensive stuff.
3) After transferring, let the paper soak longer than you'd think - at least 5 minutes. It comes off more easily. Still might need a toothbrush though.
4) If you are having trouble getting the paper through the printer, pre-curl it. I know you should try an minimise curling, but it is better than no pattern at all.
More to come I'm sure......
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Post by Dingo on Dec 3, 2005 10:24:30 GMT 10
Sweet.
So far I've been using 433Mhz modules to send and receive CRC'd serial comms.
But they are pretty slow and need quite a bit of the main processor's grunt to run.
These new ones look great, and so small, freaky.
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Post by Dingo on Oct 5, 2005 14:35:41 GMT 10
www.atmel.com/dyn/products/tools.asp?family_id=607The latest release of Atmel's AVR Studio, 4.12 has integrated AvrGCC. So now you can have the ease for developing and debugging in Avr Studio without buying IAR ! I've been playing with it and it seems stable and very usable. It works really well with WinAVR. So all you need to do to install is double click the WinAVR installer, wait a while then double click the AVR Studio installer, then wait a while, then start coding! Even the Procyon library has realeased a windows installer. It makes setup a breeze! Oh and did I mention it is all free!
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Post by Dingo on Mar 9, 2005 18:07:56 GMT 10
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Post by Dingo on Dec 10, 2004 8:53:38 GMT 10
Just saw this project www.robotics.com/arobot/andy.htmland thought how cool to have a 486 motherboard running on just batteries and running Real Time Linux. Oh where is the time for it all???
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Post by Dingo on Dec 3, 2004 9:54:13 GMT 10
Ok just saw that www.futurlec.com/ICSFOthers.shtmlhas the new ISD4003 single chip voice recorders that record upto 16 minutes of speech. here are the prices in USD: ISD4002 ISD4002 SPI Interface Record and Playback IC (2 Min) Yes 1 $6.90 ISD4003-04MP ISD4003 SPI Interface Record and Playback IC (4 Min) Yes 1 $9.90 ISD4003-08MP ISD4003 SPI Interface Record and Playback IC (8 Min) Yes 1 $10.50 ISD4004-16MP ISD4004 SPI Interface Record and Playback IC (16 Min) Yes 1 $12.90 ISD5116 ISD5116 I2C Interface Record and Playback IC (8-16 Min) Yes 1 $12.90 They also inlcude heaps of special features to enhance the speech quality. Here is the datasheet: www.winbond-usa.com/products/isd_products/chipcorder/datasheets/ISD4003Rev1.0.pdfI just need to find an application for these now ;D
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Post by Dingo on Nov 27, 2004 14:51:31 GMT 10
Just noticed some interesting new ICs from Maxim. The 1337 and friends are Real Time Clocks with the crystal included. Pretty cool idea. Therefore you get an IC that has everything it needs to keep time accurately, still including the automatic battery backup.
The only catch is I think they only come in SOIC packages (ie small surface mount packaging)
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