FAQFAQ   GalleryGallery   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in   Forum RSS Feed   Hacked Gadgets Main Site 

Need some help, Timer for Washer and Dryer

 
Post new topic   Reply to topic    Hacked Gadgets Forum Index -> New Projects Currently Being Developed
View previous topic :: View next topic  
Author Message
jaredharley
Semi Newbie


Joined: 04 Apr 2006
Posts: 9
Location: Greeley, CO

PostPosted: Mon Aug 20, 2007 12:34 am    Post subject: Need some help, Timer for Washer and Dryer Reply with quote

Here's the situation:

My wife and I have the washer and dryer that came with our house. They're only 3 years old and in good condition. The previous owners tried to buy as cheap of ones as possible when they moved out (and can you blame them?). Both are Hotpoint brand and simple in design - turn dials to set the settings, etc.

The problem is that neither machine has a buzzer, and we have no idea when they finish their cycle.

I checked out Hotpoint's website and looked through all of the parts manuals and accessories, and they don't make a buzzer for any compatible model that I would be able to add in.

I have two solutions in mind:
    1. Find/make a device that would live between the appliance's plug and the outlet, and would detect and buzz when the washer/dryer stopped pulling electricity to run the motor (keep in mind, these are cheap, so there aren't any "wrinkle-free" settings or anything that would keep the machine running). I didn't find a device that could do this, nor have any idea where to start making one.

    2. Hack in a buzzer attached to the cycle dial, which moves from the selected cycle to "Off" as the cycle runs. I haven't looked at the wiring inside the control panel, so I don't know how difficult this would be. An issue that comes to my mind is that on both machines there are multiple off positions, one for each of the cycles.
After doing some research online, the only resource I could find was someone who had used a photo diode to detect when the "Cycle Complete" LED lit up on his washer. He had a home automation setup, so the house speakers announced that the cycle was done.

So, any thoughts, ideas, or links for me? I appreciate any help anyone can give - and I'm not afraid to tear things apart and start soldering! (as long as I know what I'm doing...)
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger

Turd
HG Ruler


Joined: 18 Aug 2007
Posts: 274
Location: Saskatchewan, Canada

PostPosted: Mon Aug 20, 2007 2:27 am    Post subject: Reply with quote

Does yours have a "Cycle Complete" LED?


eric
Back to top
View user's profile Send private message Visit poster's website
BronzeG3
HG Master


Joined: 30 Apr 2006
Posts: 134

PostPosted: Mon Aug 20, 2007 5:11 am    Post subject: Reply with quote

You could use a Hall Effect Sensor. While the machine is in operation, the AC in the power cord will create a magnetic field. Attach the sensor to the cord with tape, and use a transistor to control a buzzer.
Back to top
View user's profile Send private message
jaredharley
Semi Newbie


Joined: 04 Apr 2006
Posts: 9
Location: Greeley, CO

PostPosted: Mon Aug 20, 2007 10:36 pm    Post subject: Reply with quote

Turd wrote:
Does yours have a "Cycle Complete" LED?


eric


No, it doesn't. If we could afford it, I'd use the no buzzer excuse as a reason to get those really nice Samsung front loaders that they sell at Lowes.

BrozneG3 wrote:
You could use a Hall Effect Sensor. While the machine is in operation, the AC in the power cord will create a magnetic field. Attach the sensor to the cord with tape, and use a transistor to control a buzzer.


Wow.. there's an interesting idea. I've never heard of these before - anyone have experience using these?
Back to top
View user's profile Send private message Send e-mail Visit poster's website MSN Messenger
Nginuity
HG Ruler


Joined: 13 Nov 2006
Posts: 224
Location: Dallas, Texas

PostPosted: Tue Aug 21, 2007 3:40 pm    Post subject: Reply with quote

Hall effect sensors work quite well for analog waves such as AC electricity. I use them in RF work sometimes.
_________________
_ _ . . . . . . _ _
Back to top
View user's profile Send private message
Turd
HG Ruler


Joined: 18 Aug 2007
Posts: 274
Location: Saskatchewan, Canada

PostPosted: Mon Sep 03, 2007 2:46 pm    Post subject: Reply with quote

On page four of this pdf there is an idea for using a Hall sensor for current monitoring Very Happy


eric
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Hacked Gadgets Forum Index -> New Projects Currently Being Developed All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Powered by phpBB © 2001, 2005 phpBB Group