Search found 1737 matches

by Externet
Tue Jul 17, 2018 6:58 pm
Forum: General Discussion
Topic: Beheaded fatty nail as soldering tip...
Replies: 1
Views: 8

Beheaded fatty nail as soldering tip...

:shock: Very cheap soldering pencils use a tip that is nothing else than a rod held by a set screw. A proper tip has a copper core and iron plated. For not precision temperature work, like salvaging components off boards, what is the inconvenient on using a nail properly ground to chisel shape tip ?...
by Externet
Mon Jul 16, 2018 6:45 am
Forum: General Discussion
Topic: Graphene lithium batteries...
Replies: 0
Views: 18

Graphene lithium batteries...

Hi fellows. Has any of you tried them ? They are available.

----> https://hobbyking.com/en_us/batteries-c ... tore=en_us

Expensive as all products beginning market, hope they give us a better future...
by Externet
Mon Jul 09, 2018 1:28 pm
Forum: General Discussion
Topic: Line Array - Anyone have experience?
Replies: 5
Views: 88

Re: Line Array - Anyone have experience?

Nice project. Do you prefer individual amplification for each driver or a series-parallel array fed by a single amplifier ? I would go with the single amplification; done it a few times that way. And no dedicated power supply to the speaker, less parts to give trouble. The old Bose have a 3x3 array;...
by Externet
Wed Jun 27, 2018 4:34 pm
Forum: Robotics
Topic: Updating the miniature everything...
Replies: 0
Views: 45

Updating the miniature everything...

A lot more added ----> https://www.youtube.com/watch?v=ACkmg3Y64_s

Enjoy.
by Externet
Sat Jun 16, 2018 6:49 am
Forum: General Discussion
Topic: Message Board update
Replies: 26
Views: 1348

Re: Message Board update

Hey fellows... do you get a false? indication of a private message ? (Top right of screen)
by Externet
Mon Jun 11, 2018 8:25 pm
Forum: General Discussion
Topic: Why is there no way to contact the Administrator?
Replies: 20
Views: 1292

Re: Why is there no way to contact the Administrator?

Well, as from today, there is a "Contact us" at the bottom... :grin:
by Externet
Mon Jun 11, 2018 8:01 pm
Forum: General Discussion
Topic: HEY Dacflyer! GIANT LED DISPLAY!
Replies: 8
Views: 658

Re: HEY Dacflyer! GIANT LED DISPLAY!

Testing the new look...
.jpg attachments not allowed... :shock:
by Externet
Sat Jun 09, 2018 6:41 am
Forum: General Discussion
Topic: Why is there no way to contact the Administrator?
Replies: 20
Views: 1292

Re: Why is there no way to contact the Administrator?

Very well said, CeaSaR. :smile:

So Postimage, eh ? If it works to link public images to public forums I may save them there; as 'Photobucket' used to be. Now, with 'Dropbox', got hurdles too.
by Externet
Thu Jun 07, 2018 6:23 am
Forum: General Discussion
Topic: Why is there no way to contact the Administrator?
Replies: 20
Views: 1292

Re: Why is there no way to contact the Administrator?

A bunch of forums that nobody uses but none of them are to report site issues...

Can someone fix the attachments/pictures quota ???
by Externet
Thu Jun 07, 2018 6:18 am
Forum: General Discussion
Topic: HEY Dacflyer! GIANT LED DISPLAY!
Replies: 8
Views: 658

Re: HEY Dacflyer! GIANT LED DISPLAY!

Suspected that they would want viewers to sign up... It is all about controlling you. I cannot even attach a screenshot of the red message "Sorry, the board attachment quota has been reached." when I try to attach a picture. Trying another way ----> [img]file:///home/externet/Desktop/P1010740.JPG[/i...
by Externet
Wed Jun 06, 2018 5:33 pm
Forum: General Discussion
Topic: HEY Dacflyer! GIANT LED DISPLAY!
Replies: 8
Views: 658

Re: HEY Dacflyer! GIANT LED DISPLAY!

18 inches tall digits... Anyone needs them ?

Tried to attach a picture; and "the board attachment quota has been reached" message pops up. :x :x :x

Will this be ever fixed ? :x

Try ----> https://www.dropbox.com/home?preview=P1010740.JPG
by Externet
Tue May 22, 2018 3:44 pm
Forum: General Discussion
Topic: Why is there no way to contact the Administrator?
Replies: 20
Views: 1292

Re: Why is there no way to contact the Administrator?

Hey Len, ask telemarketers for their credit card number upfront.
When they ask why, tell you charge $100/hour to talk. Minimum charge 1 hour...
by Externet
Mon May 07, 2018 5:00 am
Forum: General Discussion
Topic: To evaluate performance of used 18650 cells...
Replies: 22
Views: 1166

Re: To evaluate performance of used 18650 cells...

Thanks, Len.
All that makes good sense. I did not take in account the cost of cells; just saw the frustration of picking a bad cell from a bin of charged ones that some do well and others not at the moment of need.
by Externet
Sat May 05, 2018 4:36 pm
Forum: General Discussion
Topic: To evaluate performance of used 18650 cells...
Replies: 22
Views: 1166

To evaluate performance of used 18650 cells...

A bunch of old, used, salvaged lithium cells of unknown capabilities. Need a load scheme to evaluate their condition. Like loading them at a certain current load for 1 minute; another load for 10 minutes, another for one hour. Measuring the voltage at end. Perhaps checking voltage recovery after a c...
by Externet
Fri May 04, 2018 5:24 am
Forum: General Discussion
Topic: Typical 0.1 μF bypass capacitor value...
Replies: 4
Views: 530

Typical 0.1 μF bypass capacitor value...

Most data sheets recommend 0.1μF bypass capacitors next to power IC pins. They smooth any sagging of the supply for the current the ICs draw in normal operation, and absorb transients generated elsewhere in the circuits. What if that capacitor value is raised; would it be 'better' or non-detrimental...