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31  Community / Bar Sport / Re: Aaron Swartz sucide on: January 14, 2013, 11:53:07 am
I think it's a testimony to the ferocity with which we are faced when demanding that information be free to all.  The powers that be are not friendly to many freedoms, especially the freedom of information.
32  Community / Exhibition / Gallery / Re: Nightlinght on: December 31, 2012, 10:52:07 pm
I built a "smart" night light with an ATtiny85 and a motion sensor hacked from an air freshener.  It is normally PWM LED at a dim level.  If it "sees" you, it goes full bright.  After 30 seconds of not "seeing" anyone, it goes to a dim level again.
33  Topics / Home Automation and Networked Objects / Re: Arduino Thermostat Project on: November 27, 2012, 12:16:30 pm
Are you controlling the temperature for a single part of the space or are you truly zoning the system using dampers in the ductork?  Is this a ducted system?
34  Community / Bar Sport / Re: I want to get into 3d printing... on: November 23, 2012, 07:43:25 pm
I think they look pretty good.  I'm one of those stubborn people who has to do everything himself.  You know, save some money and spend twice the time.  I'm a mechanical engineer by trade, so I guess it comes with the territory.  I've looked into the printerbot, I think when it was on Kickstarter.  They look like nice machines and seem to be well designed.  It depends on what size you're planning to get as to what I'd recommend.  The Jr. model looks to be a good price.  The Plus and LC models go for about the same as an assembled Prusa Mendel on Ebay.  Pick your poison, I guess.  I would do some checking around to see what kind of reviews people who have bought the Printrbot would give.  Don't get into a hurry and research well.  You'll be glad you did.  Have fun, that's the most important part, along with the learning.

Update on my machine:
I just got my smooth rods, bearings, belts, and pulleys today.  Only a few major parts left to get.  Electronics, hot end, and heated bed, plus nickel and dime stuff.  It's coming along nicely.
35  Community / Bar Sport / Re: I want to get into 3d printing... on: November 20, 2012, 03:22:52 pm
@wildbill

You have the whole kit and are only half-way?  My bottle neck is money.  I'm trying not to spend too much at one time so that I stay out of trouble at home.  Mine is as complete as it can be right now without more parts, which will arrive tomorrow.  By the end of this weekend, I'll be back to waiting for the next parts order.

This is your official kick in the pants to get going on that thing  smiley
I want to hear how it's going and see pictures!
36  Community / Bar Sport / Re: I want to get into 3d printing... on: November 19, 2012, 04:28:58 pm
http://www.reprap.org/

This is where I've found most of my information.  There is a forum there too.  I'm about 1/3 complete with a Prusa Mendel.  I've been buying some parts from my local hardware store--all thread and nuts, washers, etc.
37  Topics / Home Automation and Networked Objects / Re: Help with AC project on: November 10, 2012, 08:29:29 pm
HVAC zoning from a single system is a complicated animal.  You should have the product data for your equipment so you can determine the minimum allowable airflow for your system.  If you close too many dampers, your airflow goes down and the static pressure goes up.  If you're using a gas furnace, it can cause high temperature limit trips in heating.  In cooling, it can cause indoor coil freeze-up problems, and ultimately cause failure in your air conditioner.  Lack of airflow in a cooling system can prevent all of the refrigerant from being boiled off in the indoor coil (evaporator coil).  Since you can't compress a liquid, you have problems.

All of this being said, you should have a leaving air temperature sensor installed so you can take action to shut the system down before some of these things become problems for your system.  I can provide more information for you if you like.  Let me know.
38  Topics / Home Automation and Networked Objects / Re: ENC28J60 Web Server on: September 22, 2012, 04:18:25 pm
Yeah, that's kind of what I figured...

Oh well, I'll try the other one.  There does seem to be a lot more information about them on the web.  Guess I should have done more research before buying.  Live and learn.
39  Topics / Home Automation and Networked Objects / Re: ENC28J60 Web Server on: September 20, 2012, 07:59:36 am
Does anyone have a recommendation, or should I just ditch this one and buy a W5100?
40  Topics / Home Automation and Networked Objects / Re: ENC28J60 Web Server on: September 17, 2012, 09:04:21 pm
@Si

I've tried using your ETHER_28J60 library, but I get several errors when trying to compile it.  I'm not sure how to troubleshoot this.  I'm far from an expert in C.  Dueminalove with 168, Arduino 18 environment, etherShield library, ETHER_28J60 library, ENC28j60 ethernet module.

Code:
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp: In member function 'char* ETHER_28J60::serviceRequest()':
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp:79: error: 'class EtherShield' has no member named 'ES_make_arp_answer_from_request'
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp:108: error: no matching function for call to 'EtherShield::ES_make_tcp_ack_from_any(uint8_t [501])'
C:\Program Files\arduino\arduino-0018\libraries\EtherShield/EtherShield.h:51: note: candidates are: void EtherShield::ES_make_tcp_ack_from_any(uint8_t*, int16_t, uint8_t)
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp: In member function 'void ETHER_28J60::respond()':
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp:158: error: no matching function for call to 'EtherShield::ES_make_tcp_ack_from_any(uint8_t [501])'
C:\Program Files\arduino\arduino-0018\libraries\EtherShield/EtherShield.h:51: note: candidates are: void EtherShield::ES_make_tcp_ack_from_any(uint8_t*, int16_t, uint8_t)
41  Community / Bar Sport / Re: CNC mill on: August 05, 2012, 09:40:08 pm
I would visit www.cnczone.com.  The forum has information on just about anything you want to buy/build.  I built a cnc router for about $500US.  The cutting area on mine is 24" x 36" and 6" height.  It's not a fast machine, but it does a nice job.  I built a Sosylva machine.  The most expensive parts will be the stepper motors, motor controllers, and power supply.  Good luck!
42  Using Arduino / Sensors / Re: Rev counter problem on: June 21, 2012, 03:27:52 pm
I would suggest looking into using interrupts.  Unfortunately, I don't have any experience in using interrupts so, hopefully, someone who can provide some good knowledge will step in and add some details.
43  Community / Bar Sport / Re: What projects do you currently have in the idea phase? on: June 08, 2012, 07:24:40 pm
In the interest of being cheap, I want to do away with the mechanical water meter and timer on my water softener.  I want to use Arduino to control the valves, cycle timing, and cycle rate --by measuring water usage-- and convert it to electronic control.
44  Using Arduino / Sensors / Re: Sensor to measure engine RPM on: June 05, 2012, 12:47:08 pm
What about taking a wire and making a few wraps around the plug wire, feeding it to a small circuit containing a 5V zener diode, then to the micro.  This should induce a voltage, the zener would keep it low enough for the input to the micro, and you should be able to measure the timing between signals.  The only issue I can see here is with engines that us a wasted spark ignition method.
45  Community / Exhibition / Gallery / Re: Goal- CNC for less than $100 on: February 14, 2012, 01:04:01 pm
Wow, you could nearly replace the whole furnace for that price.
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