GideonTech.com Forums

  • June 06, 2020, 05:16:13 AM
  • Welcome, Guest
Please login or register.

Login with username, password and session length
Pages: [1] 2 3   Go Down

Author Topic: touch switch  (Read 8411 times)

fuzzball172

  • GT Fanatic
  • **
  • Karma: +0/-0
  • Offline Offline
  • Posts: 116
    • http://www.leeraven.com/mod/mod.htm
touch switch
« on: September 03, 2003, 06:18:02 AM »

I have seen a touch dimmer light switch in our local DIY store, the cheapest is a slave unit at 7... I thought that this might be a good candidate for modding... has anyone ever seen on of these switches and could the touch pad be used as a momentary normaly open switch? :-?

Looks like this http://www.diy.com/bq/product/product.jhtml?PRODID=170628&CATID=170496&maxBullets=999 but the cheapo white plastic version (but the touch pad is chromed)
Logged

TemplaraPheonix

  • Senior Modder
  • ***
  • Karma: +0/-0
  • Offline Offline
  • Posts: 228
touch switch
« Reply #1 on: September 03, 2003, 10:30:39 AM »

Seeing as this is basically a variable resistor, I'm sure you could attach circuitry that would turn it into a digital one or off based on the resistance, and thus be suitable as a momentary switch. Many things could do this, such as a microcontroller.

A cheaper - $7 method uses a chip that could easily do this easily, the LM series used in the HD indicator mods. Just attach the touchpad onto the 5V Molex and the analogue input, and set the 10th LED output to an optoisolator, and a XOR gate. You'd loop around the input from the end of the XOR to a 5 uF cap and the optoisolator back to the other input. This would allow you to both turn on the computer and turn it off with the switch. You'd then adjust the resistance values on the LM for that of the touchpad. You could also hook up the other 9 LED outputs for a cool display on the front of your case.
Logged

viridius

  • Moderator
  • Elite Modder
  • *****
  • Karma: +15/-0
  • Offline Offline
  • Posts: 4,258
  • You know what I mean.
    • http://www.getyourlanon.com
touch switch
« Reply #2 on: September 03, 2003, 05:43:11 PM »

Or you could buy a QT110 sensor for two pounds and use that.
Logged
"I'm totally going to send ninjas after you." - BalefireX

fuzzball172

  • GT Fanatic
  • **
  • Karma: +0/-0
  • Offline Offline
  • Posts: 116
    • http://www.leeraven.com/mod/mod.htm
touch switch
« Reply #3 on: September 04, 2003, 01:51:53 AM »

Quote from: viridius
Or you could buy a QT110 sensor for two pounds and use that.
How would you hook that up?
Logged

viridius

  • Moderator
  • Elite Modder
  • *****
  • Karma: +15/-0
  • Offline Offline
  • Posts: 4,258
  • You know what I mean.
    • http://www.getyourlanon.com
touch switch
« Reply #4 on: September 04, 2003, 09:41:26 PM »

Go to QProx and find the data sheet.  All you need is a small capacitor and a touch plate which can be pretty much anything conductive.
Logged
"I'm totally going to send ninjas after you." - BalefireX

BalefireX

  • Global Moderator
  • Elite Modder
  • *****
  • Karma: +1341/-3
  • Offline Offline
  • Posts: 4,839
  • http://pics.aran.ws
    • pics.aran.ws
touch switch
« Reply #5 on: September 05, 2003, 07:17:37 AM »

Since Viridius fails linking, here is a link to the QT110 Datasheet:
http://www.qprox.com/downloads/datasheets/qt110_102.pdf
Logged


fuzzball172

  • GT Fanatic
  • **
  • Karma: +0/-0
  • Offline Offline
  • Posts: 116
    • http://www.leeraven.com/mod/mod.htm
touch switch
« Reply #6 on: September 05, 2003, 02:40:57 PM »

Got the datasheet... looks simple enough... just waiting for the ICs to be delivered now
Logged

viridius

  • Moderator
  • Elite Modder
  • *****
  • Karma: +15/-0
  • Offline Offline
  • Posts: 4,258
  • You know what I mean.
    • http://www.getyourlanon.com
touch switch
« Reply #7 on: September 05, 2003, 05:43:58 PM »

Failed what?  Bring it.  I will drop you like third period french.
Logged
"I'm totally going to send ninjas after you." - BalefireX

BalefireX

  • Global Moderator
  • Elite Modder
  • *****
  • Karma: +1341/-3
  • Offline Offline
  • Posts: 4,839
  • http://pics.aran.ws
    • pics.aran.ws
touch switch
« Reply #8 on: September 05, 2003, 05:57:20 PM »

You know as well as I do that you edited that post... if you want some you bring it.

irc.gideontech.com

my kung fu is stronger than yours!
Logged


viridius

  • Moderator
  • Elite Modder
  • *****
  • Karma: +15/-0
  • Offline Offline
  • Posts: 4,258
  • You know what I mean.
    • http://www.getyourlanon.com
touch switch
« Reply #9 on: September 05, 2003, 06:03:58 PM »

You want to talk Kung-Fu?

Yeah.  That's what I thought.
Logged
"I'm totally going to send ninjas after you." - BalefireX
Pages: [1] 2 3   Go Up
 

Page created in 0.219 seconds with 48 queries.