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61  Using Arduino / Programming Questions / Re: How can I download the raw compiled binary, then upload it to another chip? on: July 30, 2011, 06:24:27 pm
Here you go, try this out for size.

http://www.evilmadscientist.com/article.php/avrreadflash/print
62  Using Arduino / Programming Questions / Re: How can I download the raw compiled binary, then upload it to another chip? on: July 30, 2011, 06:20:29 pm
I think there is a way to use AVRDude to read from the chip. I'll go see if I can find it again...
63  Using Arduino / Project Guidance / Re: Arduino Camera Laser Trigger on: July 25, 2011, 07:30:51 am
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.
64  Using Arduino / Motors, Mechanics, and Power / Re: my first big project - BMS - is it possible? on: July 23, 2011, 06:21:51 pm
I'm reluctant to be negative towards the relay idea because I don't have a better one to replace it, but how much room is 102 relays going to take up? I mean if it was a car, then yeah just stick it in the boot, but it's a scooter, and there isn't much storage room on a bike...
65  Using Arduino / General Electronics / Re: 'pwm-->12v pc fan' solutions & grumpy_mike's schematic on: July 23, 2011, 09:47:01 am
Farnell has them -

http://uk.farnell.com/rohm/2sk3065t100/mosfet-n-ch-60v-2a-sot-89/dp/1834055?Ntt=2SK3065
66  Community / Bar Sport / Re: Moar creative Arduino projects on: July 23, 2011, 07:25:12 am
Screw the projects, I'm a little bit amazed that you can have your own Lego kit made and shipped to you!
67  Using Arduino / General Electronics / Re: Starting out: KiCad or Eagle? on: July 23, 2011, 07:20:18 am
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. smiley
68  Using Arduino / General Electronics / Re: Starting out: KiCad or Eagle? on: July 22, 2011, 04:17:42 pm
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.
69  Using Arduino / General Electronics / Re: Screw terminals that reliably fit in protoboards? on: July 22, 2011, 04:11:40 pm
I seem to remember these have worked quite well for me in the past.
70  Using Arduino / Microcontrollers / Re: What is FPGA? on: July 19, 2011, 02:04:23 am
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.
71  Community / Exhibition / Gallery / Re: Binary Intervalometer on: July 18, 2011, 08:24:13 am
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.
72  Using Arduino / Microcontrollers / Re: Is it neccesary to pull-up the reset pin on home made Arduino board? on: July 17, 2011, 06:39:26 am
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! smiley
73  Using Arduino / General Electronics / Re: Using only one resistor on a common cathode RGB LED? on: July 15, 2011, 11:24:26 am
Try things like old VCRs - they often have through hole components in.
74  Using Arduino / Project Guidance / Re: Arundio GSM with MySQL database on: July 15, 2011, 11:07:34 am
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.
75  Using Arduino / Microcontrollers / Re: please help me with this error on: July 15, 2011, 11:04:13 am
You need to actually tell us what the error message is, but it looks like you might be missing a } at the very end. Post the whole code if it doesn't work, and use the '#' button to make it readable.
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