Pages: [1]   Go Down
Author Topic: Electroluminescent Wire + Arduino  (Read 1562 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 5
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hey guys,

First time posting, sorry if this is in the 'wrong forum' I believe it is.....

I have an Arduino MEGA 1280, I also have about 4-5 meters of Electroluminescent wire I wish to power (ideally I would like to be able to dim and brighten it with the board) however, I would just settle to be able to turn it on and off....

I have a 9 volt inverter for the EL wire, I also have a collection of resistors at my disposal along with some 2N7000 MOSEFT transistors.......

Tutorials or examples for what I wish to do is scarce and I was wondering could anyone here help me... The closest thing I've come accross is this however I don't understand what the transistors are doing. http://www.flickr.com/photos/pdinnen/4830726953/

Any help would be appreciated + many thanks in advance !
Logged

Norway
Offline Offline
Full Member
***
Karma: 0
Posts: 104
Have you thought it over before asking?
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

The text says "triac", this is used to switch the el-wire on and off.
It cannot dim the wire.
Logged

2B || !2B

... bonding electrons and bits!

Offline Offline
Newbie
*
Karma: 0
Posts: 5
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Yes, I've seen the Triac, however what I want to know is, can i use the 2N7000 MOSEFT, or is it a component i will need to source myself?
Logged

Sydney, Australia
Offline Offline
Newbie
*
Karma: 0
Posts: 49
Bam!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

You could just use a low input current relay to switch between on and off - you do get a click sound depending on the relay but its really easy.

John
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 5
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Could you just elaborate on that slightly please?... I have a 2N7000 MOSFET at my disposal? would I be able to use that ?

Many thanks !
Logged

Sydney, Australia
Offline Offline
Newbie
*
Karma: 0
Posts: 49
Bam!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

I would just use a reed relay such as: http://www.jaycar.com.au/productView.asp?ID=SY4036

Some would say that it is necessary to put a diode over the coil but I never have and its been fine for me.

I have actually used that exact relay to run EL wire.

John
Logged

0
Offline Offline
Sr. Member
****
Karma: 0
Posts: 360
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Seems like nobody's gotten around to telling you this but...

I have a 2N7000 MOSFET at my disposal? would I be able to use that ?

No.

A single MOSFET only works for DC, you need a triac for AC - and EL wire is high-voltage low-current AC. You can also use a relay, or any sort of mechanical switch, as they don't know or care about AC/DC. You can make a rudimentary triac by connecting two MOSFETs in an anti-series configuration, but that's really suboptimal for many reasons (plus your MOSFET probably isn't rated to 300v)
Logged

Sydney, Australia
Offline Offline
Newbie
*
Karma: 0
Posts: 49
Bam!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Couldnt you use the MOSFET before the inverter converts the 9v to how ever much?

I know nothing about triacs, but if theres a 9v input to power them thats gonna be DC, isnt it?

John
Logged

0
Offline Offline
Sr. Member
****
Karma: 0
Posts: 360
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

You could, however, that means you can't use the inverter for any other EL wire... and it's an N-channel MOSFET, so you'd need ~12v or something like that to turn it on, necessitating another transistor of some sort.
Logged

Pages: [1]   Go Up
Jump to: