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.


mdf



2259 posts

Uber Geek
+1 received by user: 694

Trusted
Subscriber

# 213998 23-Apr-2017 12:17
Send private message

I spent the morning tidying out the garage getting distracted and pulling apart a couple of old laser printers. I was mainly after the aluminium for a couple of projects, but also have a nice new stash of machine screws, cogs and a couple of stepper motors.


The electronic componentry is well beyond anything I might do with it, so free to a good geekzone home. I'm picking the PCBs are worthless, but some of the boards seem to have some nice capacitors and whatnot (that's a technical term I picked up from 5th form physics) for someone that knows what they are doing.


Would prefer pickup in Wellington, but happy to ship (within reason) for the cost of a donation to OMGTech or a new Geekzone subscription (your choice).






 


 


Create new topic
5473 posts

Uber Geek
+1 received by user: 1914


  # 1769224 23-Apr-2017 13:49
Send private message

May be better in Offers / Wanted forum


Stu

Hammered
5246 posts

Uber Geek
+1 received by user: 1179

Moderator
Trusted
Lifetime subscriber

  # 1769225 23-Apr-2017 13:51
One person supports this post
Send private message

Moved to the correct sub-forum.




Keep calm, and carry on posting.

 

 

 

Click to see full size Click to see full size


 
 
 
 


1144 posts

Uber Geek
+1 received by user: 260


  # 1769231 23-Apr-2017 14:13
Send private message

Hardly anything you can find inside printers you can use in fun projects in my experience. Even cooling fans are not 12V.

 

Check 3 black relays - if not 12V - also of no use. Otherwise - possible home automation / car application.

 

Unwind few coils and keep the copper wire. That comes handy sometimes in the garden or in DIY projects.

 

 


254 posts

Ultimate Geek
+1 received by user: 26


  # 1769295 23-Apr-2017 18:13
Send private message

I pull big high end ones apart all the time. Full of big steppers and perfect ground steel rods. The ally heat sinks are high quality and good for melting. But yeah, most have really high end 24v power supplies which are hard to find a use for. If you find a good 12v you could make a bench top power supply.


22257 posts

Uber Geek
+1 received by user: 4782

Trusted
Subscriber

  # 1769299 23-Apr-2017 18:21
One person supports this post
Send private message

24v is way more use than 12v for most things.





Richard rich.ms

4839 posts

Uber Geek
+1 received by user: 2770

Trusted

  # 1769300 23-Apr-2017 18:22
Send private message

If you have enough of them, a lot of scrap metal dealers will pay you for PCBs.


mdf



2259 posts

Uber Geek
+1 received by user: 694

Trusted
Subscriber

  # 1769334 23-Apr-2017 19:25
Send private message

Good to know, thanks guys. I pulled apart two laser printers today. Next week is a couple of inkjets. Really aiming for stepper motors and some nice rod/bar stock, but I'll keep the other bits and pieces too.


 
 
 
 


3885 posts

Uber Geek
+1 received by user: 1757

Subscriber

  # 1769369 23-Apr-2017 20:44

Power supply circuit boards probably best for "ratting" components from. As it would have a bridge rectifier, various inductors, at least 1 high current high speed diode, sometime opto isolators, sometimes the heatsinked 3 terminal "transistors" are actually fixed voltage regulators. So they can be repurposed for making your own linear type regulated power supplies. And plenty of through hole resistors, so saves you from having to drive to Jaycar just to get 1 or 2 resistors.

 

Although old ATX computer power supplies are even better for ratting parts from. And they are also handy for using as a simple short circuit proof bench power supply. As they output 12V, 5V, 3.3V, -12V, and a 2nd 5V line that is always on. To make them switch on, connect the wire called PS_ON to one of the 0V wires.






22257 posts

Uber Geek
+1 received by user: 4782

Trusted
Subscriber

  # 1769374 23-Apr-2017 20:52
Send private message

Inkjets I have pulled apart have just had a DC motor to move the head back and forth and a strip with a pattern on it that it reads to know where it is. The paper feed mechanism didnt seem to be a normal stepper, not sure how that worked.





Richard rich.ms

1764 posts

Uber Geek
+1 received by user: 369

Trusted

  # 1770475 26-Apr-2017 09:23
Send private message

Those boards could be used to test your de-soldering / soldering skills on, especially for the surface mount parts.

 

Capacitors,  - I wouldn't trust, especially those on the rectified incoming 230v. Electrolytic caps go dry, loose value, explode, leak.

 

I used to scavenge PCB's many years ago, but one can never be too sure about the provenance of the components, and if something doesn't work as expected, you start second-guessing the parts you have scavenged.





My thoughts are no longer my own and is probably representative of our media-controlled government


mdf



2259 posts

Uber Geek
+1 received by user: 694

Trusted
Subscriber

  # 1770651 26-Apr-2017 14:12
Send private message

SepticSceptic:

 

Those boards could be used to test your de-soldering / soldering skills on, especially for the surface mount parts.

 

 

Now that, sir, is an excellent idea! 


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 »

Dunedin selects Telensa to deliver smart street lighting for 15,000 LEDs
Posted 18-Jul-2019 10:21


Sprint announces a connected wallet card with built-in IoT support
Posted 18-Jul-2019 08:36


Educational tool developed at Otago makes international launch
Posted 17-Jul-2019 21:57


Symantec introduces cloud access security solution
Posted 17-Jul-2019 21:48


New Zealand government unveils new digital service to make business easier
Posted 16-Jul-2019 17:35


Scientists unveil image of quantum entanglement
Posted 13-Jul-2019 06:00


Hackers to be challenged at University of Waikato
Posted 12-Jul-2019 21:34


OPPO Reno Z now available in New Zealand
Posted 12-Jul-2019 21:28


Sony introduces WF-1000XM3 wireless headphones with noise cancellation
Posted 8-Jul-2019 16:56


Xero announces new smarter tools, push into the North American market
Posted 19-Jun-2019 17:20


New report by Unisys shows New Zealanders want action by social platform companies and police to monitor social media sites
Posted 19-Jun-2019 17:09


ASB adds Google Pay option to contactless payments
Posted 19-Jun-2019 17:05


New Zealand PC Market declines on the back of high channel inventory, IDC reports
Posted 18-Jun-2019 17:35


Air New Zealand uses drones to inspect aircraft
Posted 17-Jun-2019 15:39


TCL Electronics launches its first-ever 8K TV
Posted 17-Jun-2019 15:18



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.