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

9714 posts

Uber Geek
+1 received by user: 4636


Topic # 173359 20-May-2015 15:45
Send private message

Most electronics devices nowadays have an on/off button that doesn’t really turn on or off, but simply toggles between active mode and standby. If the power goes off and then comes back on, the unit usually comes on in standby mode.

I would really like to be able to change this behaviour and have a device come on in active mode whenever power is present. My question is whether this is controlled by a standard chip or circuit that is the same across different devices, and what would be involved in making such a modification. Would this be a difficult thing to do? I know enough electronics to assemble kits and make certain modifications, but not enough to design my own circuits.

I reject your reality and substitute my own. - Adam Savage

Create new topic
698 posts

Ultimate Geek
+1 received by user: 335

  Reply # 1308582 20-May-2015 15:55
Send private message

No, this isn't controlled by a standard circuit. In most cases it will be software controlled, e.g. in response to IR codes or button presses interpreted by a microcontroller.

In the case of a simple button, which is almost certainly just a high/low value, you could replicate this externally if you can detect the device is in standby.

3599 posts

Uber Geek
+1 received by user: 1517


  Reply # 1308782 20-May-2015 20:10
Send private message

If the device is a desktop computer. There will probably be a setting in cmos setup. To make it switch on when power is connected. And if it is something that is controlled by a remote. Make a Arduino based IR blaster.


21983 posts

Uber Geek
+1 received by user: 4645


  Reply # 1308788 20-May-2015 20:13
Send private message

Had this with the TV I was putting in my arcade cabinet. An old 90s or early 2000s tube 4:3 thing.

Anyway, holding the power button down with a stack of washers and some tape got the behaviour I was looking for. AC on, TV starts. AC gone, TV off.


Create new topic

Twitter »

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 »

Orcon announces new always-on internet service for Small Business
Posted 18-Apr-2019 10:19

Spark Sport prices for Rugby World Cup 2019 announced
Posted 16-Apr-2019 07:58

2degrees launches new unlimited mobile plan
Posted 15-Apr-2019 09:35

Redgate brings together major industry speakers for SQL in the City Summits
Posted 13-Apr-2019 12:35

Exported honey authenticated on Blockchain
Posted 10-Apr-2019 21:19

HPE and Nutanix partner to deliver hybrid cloud as a service
Posted 10-Apr-2019 21:12

Southern Cross and ASN sign contract for Southern Cross NEXT
Posted 10-Apr-2019 21:09

Data security top New Zealand consumer priority when choosing a bank
Posted 10-Apr-2019 21:07

Samsung announces first 8K screens to hit New Zealand
Posted 10-Apr-2019 21:03

New cyber-protection and insurance product for businesses launched in APAC
Posted 10-Apr-2019 20:59

Kiwis ensure streaming is never interrupted by opting for uncapped broadband plans
Posted 7-Apr-2019 09:05

DHL Express introduces new MyDHL+ online portal to make shipping easier
Posted 7-Apr-2019 08:51

RackWare hybrid cloud platform removes barriers to enterprise cloud adoption
Posted 7-Apr-2019 08:50

Top partner named at MYOB High Achievers Awards
Posted 7-Apr-2019 08:48

Great ideas start in Gisborne with hackathon event back for another round
Posted 7-Apr-2019 08:42

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.