Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




642 posts

Ultimate Geek


# 259872 27-Oct-2019 18:59
Send private message quote this post

Currently have a set of three LED bars from Bunnings that light up when opening the pantry up, one has a movement sensor and sends a signal to the other two lights to switch on when it detects movement.
However, they run on AA batteries (2 each for a total of 6) and we are on our third set after 7 months. I’m guessing sendingreceiving a wireless signal may be chewing through the juice.
Is there another option that uses mains power that people are aware of? Ideally something I can bung up on the pantry ceiling. Or will I need a sparky to source and install something?
There is a power point in the back of the pantry that could be used for this.
Any knowledge or information gratefully accepted

Create new topic
3507 posts

Uber Geek


  # 2344184 27-Oct-2019 19:32
Send private message quote this post

Ours has the other way. Instead of the light being a sensor, the switch is. With a 3-way manual override if you want to keep it off/on/auto

 

https://www.pdl.co.nz/Home-Owner/Products/Products/Safety/Motion-Sensors 

 

 

 

 


22892 posts

Uber Geek

Trusted
Subscriber

  # 2344185 27-Oct-2019 19:34
One person supports this post
Send private message quote this post

Get some 12v LED tape, and a 12v motion sensor and a 12v wallwart and job done.





Richard rich.ms

 
 
 
 


1087 posts

Uber Geek


  # 2344186 27-Oct-2019 19:37
Send private message quote this post

richms:

 

Get some 12v LED tape, and a 12v motion sensor and a 12v wallwart and job done.

 

 

That'll work. I have a 12V power supply in the garage which connects to a 12V LED strip via a microswitch, and is switched by a 3D printed piece glued to the door track. If you don't have a 3D printer, a piece of bent metal or strategic placing of the switch will work just as well.


9014 posts

Uber Geek


  # 2344359 28-Oct-2019 11:13
One person supports this post
Send private message quote this post

I used reed switches with NC/NO contacts and magnets.  (Normal reed switches are NO - you need to have NC contacts so the strip lights go on when the magnet is moved away from the reed switch as the door opens. Used plastic encapsulated switches/magnets with screw terminals and screw holes for mounting, wall-wart for power.  Upside - easy to set up and reliable, downside vs motion sensor - the lights stay on if you don't close the door (but the LEDs only draw a few watts).


22892 posts

Uber Geek

Trusted
Subscriber

  # 2344384 28-Oct-2019 12:56
Send private message quote this post

Most reed switches are only rated for signalling currents and will end up welding over time switching even small amounts of DC to a load. So you have to add a relay board.





Richard rich.ms

9014 posts

Uber Geek


  # 2344409 28-Oct-2019 13:51
Send private message quote this post

richms:

 

Most reed switches are only rated for signalling currents and will end up welding over time switching even small amounts of DC to a load. So you have to add a relay board.

 

 

Yes - the ones I use are rated at 0.5 amp, the strips draw 5w/m, they're only about 500mm long, so well under the rated load (under which they're supposed to last some number of thousands of cycles).  They've been in place for years, working fine.  But yeah - if you wanted very bright lights, then another method.  A couple of watts of LED strip seems to be plenty for under-bench cupboards - though to be fair, the cupboards have white laminate surfaces.


Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Netflix releases 21 Studio Ghibli works
Posted 22-Jan-2020 11:42


Vodafone integrates eSIM into device and wearable roadmap
Posted 17-Jan-2020 09:45


Do you need this camera app? Group investigates privacy implications
Posted 16-Jan-2020 03:30


JBL launches headphones range designed for gaming
Posted 13-Jan-2020 09:59


Withings introduces ScanWatch wearable combining ECG and sleep apnea detection
Posted 9-Jan-2020 18:34


NZ Police releases public app
Posted 8-Jan-2020 11:43


Suunto 7 combine sports and smart features on new smartwatch generation
Posted 7-Jan-2020 16:06


Intel brings innovation with technology spanning the cloud, network, edge and PC
Posted 7-Jan-2020 15:54


AMD announces high performance desktop and ultrathin laptop processors
Posted 7-Jan-2020 15:42


AMD unveils four new desktop and mobile GPUs including AMD Radeon RX 5600
Posted 7-Jan-2020 15:32


Consolidation in video streaming market with Spark selling Lightbox to Sky
Posted 19-Dec-2019 09:09


Intel introduces cryogenic control chip to enable quantum computers
Posted 10-Dec-2019 21:32


Vodafone 5G service live in four cities
Posted 10-Dec-2019 08:30


Samsung Galaxy Fold now available in New Zealand
Posted 6-Dec-2019 00:01


NZ company oDocs awarded US$ 100,000 Dubai World Expo grant
Posted 5-Dec-2019 16:00



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.