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1  Using Arduino / Motors, Mechanics, and Power / Re: Pwr Driving Requirements for an RIV-12AE 21 Ice Maker Dble Solenoid H2O Valve on: November 06, 2013, 04:57:42 pm
Thanks MarkT for the reply.

I guess I will have to pull out my physics and or controls books and figure out how a solenoid works again.   I thought if the current is reversed in the coil of the solenoid the changes direction and travels in the opposite direction.   The solenoid vibrates a lot when 120 volt ac is applied I guess this is due to the 60 Hz frequency.

I'm hoping someone on the forums that sees this has either measured or can measure the power to their solenoid on their fridge and can tell me whether it is AC or DC.
2  Using Arduino / Motors, Mechanics, and Power / Pwr Driving Requirements for an RIV-12AE 21 Ice Maker Dble Solenoid H2O Valve on: November 06, 2013, 08:55:37 am
Does anyone know or can check the power driving requirements for an Ice Maker water dispensing Solenoid Water Valve or similar part.  It is labeled 115Vac 50/60 Hz, but I would have thought that you would want to drive it with DC.  I don' t have a refrigerator with this configuration that I can easily check.  Thanks in advance.

http://www.amazon.com/GE-WR57X10051-Maker-Double-Solenoid/dp/B003BIGDHW/ref=pd_sxp_f_pt#productDetails
3  Using Arduino / Networking, Protocols, and Devices / Re: Network Questions on: April 05, 2013, 06:56:33 am
Surfer Tim, thanks for pointing me to the link.  After some investigation it appears I have lot more reading ahead of me.  Plus I need a better understanding of C++ objects.

tobywimberly, cool application!  I'm building a Fish Pond Monitor that monitors and maintains water level and turns on a heater if it goes below 0 C.  It serves a status web page of temperature.  I eventually want to incorporate a text message to my not so smart phone when a problem occurs via cellphonenumber@vxpix.com
4  Using Arduino / Networking, Protocols, and Devices / Re: Network Questions on: April 04, 2013, 07:37:25 am
I have a "dumb" question.  How do you get your networked Arduino to send an email?  It would seem the following code is key, but it isn't obvious to me.  (ie "EHLO server addy" - Email HLO??)  Can you use a generic me@gmail.com account?  Thanks in advance for any help.

Code:
if (client.connect(server, port)) {
    Serial.println("connected");
    client.println("EHLO server addy");
      delay(2800);
    client.println("MAIL FROM: email addy");
      delay(2800);
    client.println("RCPT TO: email addy");
      delay(2800);
    client.println("DATA");
      delay(2800);
   client.println("SUBJECT: Door open");
      delay(2800);
5  Topics / Home Automation and Networked Objects / Re: Remote control web page for arduino and ethernet card on: March 31, 2013, 09:10:16 am
Power7net, i was looking for a simple example of interaction between a web page and an arduino example utilizing the SD card on the Ethernet Shield.  This is perfect!  Thank you.
6  Using Arduino / General Electronics / Re: Help with choosing a transistor on: February 14, 2011, 08:01:26 am
If it works then it's probably the right device.  Typically for a transistor used as a switch your main concern is it's on/ off frequency response and then if it will withstand the operating voltages and currents.   If your concerned about power dissipation and not so much about frequency (switching a motor is low frequency) i.e. battery operation I would think about using the Mosfets.

Ideal conditions you want are as follows minimum transistor turn-on current and voltage (base to emitter current for NPN).  Near zero voltage drop across the transistor (Coll to Emitter volt.) when transistor is saturated.  Zero current flow when transistor is OFF.  All within your frequency (Bandwidth) of your application.

Datasheet TP122
http://www.fairchildsemi.com/ds/TI/TIP121.pdf

I can go on and on.
7  Community / Bar Sport / Gadget Freak Case #180: Tic Tac Cubed - Dueling in 3D -Tic Tac Cube - Arduino on: February 13, 2011, 07:41:53 pm
Has anyone seen this Gadget Freak Case from Design News Magazine?

http://www.designnews.com/article/512690-Gadget_Freak_Case_180_Tic_Tac_Cubed_Dueling_in_3D.php


Matthew Katzenstein has created a 3-D Tic Tac Toe game. It lights up with an interactive knob and is programmed to play two- and three-player versions. The game is a color-coded 3x3 RGB LED matrix.

Tic Tac Cubed is controlled by an Arduino Diecimila, a microcontroller board based on the ATmega168. Diecimila means 10,000 in Italian and was named thusly to mark the fact that more than 10,000 Arduino boards have been made. The Diecimila is the latest in a series of USB Arduino boards.
8  Using Arduino / Installation & Troubleshooting / Re: Installing Arduino IDE 0022 on Ubuntu 10.04 LTS 64bit for Arduino Uno on: February 13, 2011, 02:47:34 pm
Awesome!!! Thank you!  It worked!

9  Using Arduino / General Electronics / Re: Help with choosing a transistor on: February 10, 2011, 09:45:44 pm
Hey doesn't IKEA sell transistors?  Just kidding!

Short and simple a Transistor is a valve.  For an NPN transtor the base is the handle on the valve and the supply voltage is the water pressure applied to the top or collector.  The Maximum Emitter to Collector EC current is the maximum amount of flow the valve can handle.   If you have 10 LED's that handle 10 mA of current in parallel they will need 100 mA of current.  Your transistor must handle at least that much Collector to Emitter current.  If your transistor only handles 50 mA you could use two with 5 LED's each.  Preferably, you should allow some 10 to 50% tolerance though.

10  Using Arduino / General Electronics / Re: controlling 12v and 220v circuits on: February 10, 2011, 09:22:38 pm
Highly recommend some isolation too.  Preferably opto-isolators such as the Sharp PC817 series.  http://www.google.com/search?client=ubuntu&channel=fs&q=Sharp+PC817&ie=utf-8&oe=utf-8

I attached the datasheet.  I also attached a neat project using SCR's and Christmas light you might be interested in.

- Regards
11  Using Arduino / General Electronics / Re: controlling 12v and 220v circuits on: February 10, 2011, 09:15:04 pm
Look into using a TRIAC.  I did a quick search and came up with this link http://www.google.com/search?client=ubuntu&channel=fs&q=triac&ie=utf-8&oe=utf-8#q=triac&hl=en&safe=off&prmd=ivns&source=univ&tbs=shop:1&tbo=u&ei=ippUTY-uLILQgAetjsCtCQ&sa=X&oi=product_result_group&ct=title&resnum=3&ved=0CEAQrQQwAg&biw=1024&bih=576&fp=3652203fe9ed933e

You may be interested in using a power mosfet.

12  Using Arduino / Installation & Troubleshooting / Re: Installing Arduino IDE 0022 on Ubuntu 10.04 LTS 64bit for Arduino Uno on: February 09, 2011, 05:03:21 pm


If I understand you correctly. I need to copy this jar file "RXTXcomm.jar" from the 0021/lib folder to the arduino-0022/lib/ folder?
13  Using Arduino / Installation & Troubleshooting / Re: Installing Arduino IDE 0022 on Ubuntu 10.04 LTS 64bit for Arduino Uno on: February 09, 2011, 08:58:36 am
Noisybit and Mellis,

Excuse my ignorance, but how do I install the file(s) https://launchpad.net/ubuntu/natty/+source/rxtx

It would seem I just need to download the latest version "rxtx_2.2pre2-3.debian.tar.gz" and then install it.   But from where... and how...  I've done this before, but having trouble remembering exact procedure. 

Thanks.

Working on this stuff as a hobby in my spare time... when I'm not doing my real jobs, servicing electron microscopes and keeping up the household.
14  Using Arduino / Installation & Troubleshooting / Re: Installing Arduino IDE 0022 on Ubuntu 10.04 LTS 64bit for Arduino Uno on: February 01, 2011, 05:56:06 am
Noisybit,

Your instructions worked!  The only issue I have is I have to run
Code:
sudo ln -s /dev/ttyACM0 /dev/ttyS10
every time I start the Arduino software.  I'm new to Linux and not sure what the work around would be for this.

FYI: I'm running KUBUNTU amd64 10. something.

I had the Arduino running earlier with the help of a couple of posts in the old forum.  http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1293243021/0  I had run it from the directory that I installed it using "dolphin".
15  Using Arduino / Installation & Troubleshooting / Re: Installing Arduino IDE 0022 on Ubuntu 10.04 LTS 64bit for Arduino Uno on: January 31, 2011, 10:03:56 pm
Noisybit, are you using the amd64 flavor of Ubuntu?
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