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Pages: 1 ... 3 4 [5] 6 7 ... 9
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63
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Using Arduino / Project Guidance / Re: Arduino Camera Laser Trigger
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on: July 25, 2011, 07:30:51 am
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owh i see..hmm..how about nikon d80?it has external shutter release right?
Yes it does. Get hold of a laser module, a phototransistor or an LDR and some screw terminals. Maybe some optocouplers as well. The one from the video uses an LDR, which I hear are a little slower. This ' laser card' is very simple to use, just plug it into the right voltage and away you go. If you don't have one knocking about right now, use a bright LED for the moment.
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67
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Using Arduino / General Electronics / Re: Starting out: KiCad or Eagle?
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on: July 23, 2011, 07:20:18 am
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How's that work? I admit there's plenty of features I haven't figured out.
Just like if you were going to group move something. Select the ripup tool, then the marquee tool, select the traces you want to ripup with a click-drag, then right click and select Group: Ripup. 
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68
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Using Arduino / General Electronics / Re: Starting out: KiCad or Eagle?
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on: July 22, 2011, 04:17:42 pm
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I've ripped up 80x100cm boards all the time while working the placement, just keep clicking traces. Only takes a few seconds, there are less traces there then the connections made just to a 40 pin uC, let alone the rest of the board. I found out the other day that you can group-command the rip-up tool like you can with move, copy etc. I felt stupid when I found out, but boy it makes things quicker.
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70
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Using Arduino / Microcontrollers / Re: What is FPGA?
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on: July 19, 2011, 02:04:23 am
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Still not too hobby friendly, I suspect all the tool chain requirements for a FPGA would be proprietary and cost big bucks to play?
I think the Xilinx stuff is kind of free but limited in functionality somewhat. Not sure though. Either way it's a 4GB beast download.
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71
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Community / Exhibition / Gallery / Re: Binary Intervalometer
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on: July 18, 2011, 08:24:13 am
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This looks good - I though about doing binary but just stuck with the normal pot method for the time being. It seems to work well for you, and the board looks very clean as well! Nice.
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72
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Using Arduino / Microcontrollers / Re: Is it neccesary to pull-up the reset pin on home made Arduino board?
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on: July 17, 2011, 06:39:26 am
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In the datasheet for the 328 (pg318) it mentions a reset pin pull up resistor in the same manner that it mentions the individual pin pull up resistors, so combined with reading elsewhere that you don't need one that's what I'd go for. The 2313 datasheet has a similar table on page 177. Unless you're making thousands of boards though, what's the cost of a resistor? Edit: I should mention to clarify that if you have a reset button, a resistor is needed, don't want any shorts! 
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74
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Using Arduino / Project Guidance / Re: Arundio GSM with MySQL database
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on: July 15, 2011, 11:07:34 am
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If the Arduino etc. can be plugged into the computer that is running the C++ program, then yeah it can work easily. Simply send the data to the Arduino over the serial port it is plugged into. It can also work the other way, with the Arduino sending serial data to the C++ program so you can update the database with the received text messages.
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