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1  Community / Bar Sport / Re: Solder/Sodder on: August 12, 2014, 06:39:42 pm
"should", "could", "would"
"half"
"Suffolk" :-)

Should be obvious that I'm one who says "sodder"...
2  Using Arduino / General Electronics / Re: Basic electronics on: June 26, 2014, 05:39:34 pm
I really enjoyed Platt's "Encyclopedia of Electronic Components" for basic information about what parts do what.

http://www.amazon.com/Encyclopedia-Electronic-Components-Volume-Transistors/dp/1449333893 - so far he's got Volume 1 out, but is delayed on Volume 2.

Another of Charles Platt's books, "Make: Electronics"  (http://www.amazon.com/Make-Electronics-Discovery-Charles-Platt/dp/0596153740/ref=sr_1_1?s=books&ie=UTF8&qid=1403822463&sr=1-1&keywords=platt+electronics) wasn't a bad intro to basic theory and practice.
3  Using Arduino / Programming Questions / Re: Need help with Attiny85 on: June 03, 2014, 05:47:50 pm
This is not exactly what you want, but might help:
http://ubiyubix.wordpress.com/2012/05/05/porting-the-arduino-irremote-library-to-the-attiny4313/
4  Using Arduino / General Electronics / Re: What gauge wire to use on: May 12, 2014, 05:07:42 pm
Here's a 24 ga wire that might work:
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_644383_-1

Another alternative is to find shielded wire that's stranded core, and remove individual strands until what's left is small enough for you.
5  Using Arduino / Programming Questions / Re: XOR and XNOR operations with 2 or 3 inputs on: May 01, 2014, 02:45:29 pm
it depends on your definition of a 3-input XOR / XNOR:
http://en.wikipedia.org/wiki/XOR_gate#More_than_two_inputs

Here's an interesting little utility I found recently that might help:
http://www.ee.calpoly.edu/media/uploads/resources/KarnaughExplorer_1.html
6  Community / Bar Sport / Re: Time to get designing. on: April 01, 2014, 06:24:11 pm
Quebec has their own rules for contests, which aren't quite compatible with the rest of the world:
http://www.theloop.ca/news/all/you-ask/article/-/a/3181408/Why-is-Quebec-excluded-from-contests-
7  Community / Bar Sport / Re: Calls "from windows" about "online hackers inside your computer". on: March 06, 2014, 06:42:29 pm
Seagate was the only company that offered a 5 year warranty. They stopped that practice during the flood, just like everyone else though. Now  all the companies only offer a 1 year warranty.

The last time I bought a WD Red, it had a 3-year warranty. No idea if that has any meaning these days (especially if you put it in a machine you build rather than a consumer NAS... I suspect their response would be "sorry, you didn't use it according to our spec".)
8  Community / Bar Sport / Re: Problen with ds102 oscilloscope on: February 05, 2014, 05:48:36 pm
I'd bet the USB cable for the oscilloscope has a Prolific PL2303 clone chipset. Prolific got tired of it and their new drivers detect the clone and disable it.

Here's some useful info:
https://groups.yahoo.com/neo/groups/baofeng_uv5r/conversations/topics/1548

If the USB cable isn't a regular serial device on XP, then this probably won't work - you'll need to find a Win7 64bit driver for your oscilloscope.
9  Using Arduino / General Electronics / Re: Help with CANbus Data logging on: January 14, 2014, 05:46:57 pm
Not sure why you can't use Arduino? You might want to look at:
http://www.seeedstudio.com/depot/canbus-shield-p-1240.html
10  Using Arduino / General Electronics / Re: What kind of connector is here? on: January 10, 2014, 05:42:44 pm
It's still hard to tell from your photo what the connector is. If it's a Wifi card, maybe it's mini PCI or mini PCI-E?

https://www.thinkpenguin.com/gnu-linux/mini-pci-mini-pci-e-mini-pci-e-half-height-guide-laptop-wifi-cards
11  Using Arduino / Microcontrollers / Re: Attiny85 programming failing - Invalid device signature on: December 20, 2013, 02:03:20 pm

The usual culprits...

* Wiring
* Auto-reset not disabled
* Wrong board selected
* Buggy ArduinoISP sketch

Enabling verbose output usually reveals which.


For the benefit of future searchers, I'll also add that I've had an Attiny85 report "Device signature = 0x000000" after I walked across a polyester carpet with the device in my hand (sigh). Apparently, zapping the device with static electricity can sometimes cause it to report a bad signature. Switching to a new Attiny85 resolved my problem.
12  Using Arduino / General Electronics / Re: 5V to 12V level convertion ? on: November 15, 2013, 02:44:06 pm
There's no way to use a pin to drive the pump. Even in an ideal world, 200 mA at 12V = 480 mA at 5V, and there's no way a single pin could do that.

You could use a pin to switch a FET / relay, though. Then you could use a boost converter to raise the supply voltage from 5V to 12V - they're available commercially or you could make one:
http://learn.adafruit.com/diy-boost-calc

It might be easier to start with a 12V supply and regulate it down to 5V for the Arduino instead.
13  Community / Website and Forum / Re: Arduino.cc reboot: feedback and comments on: October 02, 2013, 06:43:19 pm
On Firefox 17.0.9 / Win XP, I see nothing except a blue banner unless I type a character in the search box at the upper right.

(This is true of both arduino.cc and forum.arduino.cc.)

- actually, I'll second Jantje : the header under Firefox is just huge. I can scroll down to see the text, but entering a space in the search box shrinks the header.
14  Using Arduino / Programming Questions / Re: How to return a char from a function on: September 19, 2013, 02:06:58 pm
char lat[15] is a string (roughly equivalent to char* lat) - it's a pointer to a place in memory. char is a single value between 0-255. You can't assume there will be an automatic conversion.
15  Using Arduino / Project Guidance / Re: Replicating an RF remote signal on: August 23, 2013, 06:54:18 pm
If you're interested in going seriously over the top, maybe investigate using a DVB SDR (software-defined radio). You'd be able to sample the spectrum around 315 MHz using one of those for a lot cheaper than a scope.

A few links:
https://www.eham.net/ehamforum/smf/index.php?topic=82601.0
http://www.rollanet.org/~kc9umr/SDR.htm

I'm only half joking...
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