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Rikkitic
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  #1668612 12-Nov-2016 15:21
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What a refreshing change from the Trump thread.

 

 





I don't think there is ever a bad time to talk about how absurd war is, how old men make decisions and young people die. - George Clooney
 


jimbob79
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  #1671006 14-Nov-2016 21:17
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Because of these quakes and having a 11 hour power cut, I decided that I need more USB power banks. The batteries where recycled out of an old laptop. Can't actually see anything as it wrapped in eletrical tape.

 

The good thing about the home made power bank is that it can charge and power at the same time. However it does get a bit hot when you do that.

 

Can't seem to upload a good size image.

 

 

Ebay parts: 

 

This works with iPhone 6s

 

Click to see full size

 

http://www.ebay.com/itm/5V-Micro-USB-1A-18650-Lithium-Battery-Charging-Board-Charger-Module-New-HC-/262201993574?hash=item3d0c74e966:g:IMEAAOSwubRXG2LI

 

 

 

Click to see full size

 

http://www.ebay.com/itm/3V-to-5V-1A-USB-Charger-for-MP3-MP4-Phone-DC-DC-Converter-Step-Up-Boost-Module-/301920991999?hash=item464be4baff:g:0zYAAOSwZ8ZXBNia

 

 






DarthKermit

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  #1671018 14-Nov-2016 21:36
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It's kitten season. I recently made this climbing frame for the kittens at the Manawatu SPCA. Here's three of the little guys checking it out for the first time.

 

Click to see full size


Rikkitic
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  #1671034 14-Nov-2016 22:11
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How cute.

 

 





I don't think there is ever a bad time to talk about how absurd war is, how old men make decisions and young people die. - George Clooney
 


RUKI
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  #1671168 15-Nov-2016 10:02
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jimbob79:

 

Because of these quakes and having a 11 hour power cut, I decided that I need more USB power banks. The batteries where recycled out of an old laptop. Can't actually see anything as it wrapped in eletrical tape.

 

The good thing about the home made power bank is that it can charge and power at the same time. However it does get a bit hot when you do that.

 

Ebay parts:....

 

 

Looked up the specs, quote: Full charge voltage- 4.2V. FYI 18650 you take out of laptop could be Li-Ion and not Li-Po hence max charging voltage should not exceed 4.1V 18650 is a form factor - read the Chemistry and Voltages from the donor pack you are getting cells from.

 

Charging current of that pcb is 1A - too little.

 

I use multiple cells in XPXS configuration when making custom made power banks and change them with balancing charger at higher currents.

 

FYI: For charging many smartphones you need 2A output 5V DC.


mdf

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  #1673120 17-Nov-2016 20:40
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I've reached new levels of rinky-dink home-brewedness:

 

 

You are looking at a car reversing camera (as yet uninstalled on the car) masking taped to a coat hanger, powered by a cordless phone wall wart, and plugged in to an old decrepit TV (not shown).

 

However it worked a treat trying to find the source of a leak behind a wall!


Rikkitic
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  #1673128 17-Nov-2016 20:52
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I bet I can beat you. Unfortunately I have no photos. When I wanted to add a satellite to my current collection, I had no way of knowing where to place the lnb. I knew the dish should work in its current position, but that was all. I took the satellite STB and set it up outside next to the dish on the roof. Then I used a videotape digitiser (Easycap) to send a picture from the STB to my laptop. Then I tuned it to a satellite I already knew worked to check it. Then I changed the frequency to the satellite I wanted and started moving the lnb around in my hand. To my amazement, the satellite popped up almost immediately. I tied the lnb down with some duct tape and have been watching it ever since. After many years it still works fine.

 

 





I don't think there is ever a bad time to talk about how absurd war is, how old men make decisions and young people die. - George Clooney
 


RUKI
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  #1673363 18-Nov-2016 09:22
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mdf:

 

....... You are looking at a car reversing camera ....... it worked a treat trying to find the source of a leak behind a wall!

 

 

Cool. The other easy solution is to tear apart WEB cam. I used Microsoft one. It is very small without enclosure and even has bright LED on the pcb serving as a light. And you do not need power supply as it is USB powered. Used to look under the car and behing the GIB.


RUKI
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  #1673370 18-Nov-2016 09:31
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Rikkitic:

 

I bet I can beat you. Unfortunately I have no photos. When I wanted to add a satellite to my current collection, I had no way of knowing where to place the lnb. I knew the dish should work in its current position, but that was all. I took the satellite STB and set it up outside next to the dish on the roof. Then I used a videotape digitiser (Easycap) to send a picture from the STB to my laptop. Then I tuned it to a satellite I already knew worked to check it. Then I changed the frequency to the satellite I wanted and started moving the lnb around in my hand. To my amazement, the satellite popped up almost immediately. I tied the lnb down with some duct tape and have been watching it ever since. After many years it still works fine.

 

 

Old Camcoders with the LCD, build in speaker and analogue input are good for that - so you can check the video and audio.

 

What you were adjusting is called "Skew" and is a calculated number. It can be set up initially by using protractor. Cheap LNB and C-band LNB may have internal antennas (inside LNB) bended by the "crooked hands" of "cheap manufacturers" (saw on a few occasions) - and internal antennas need to be adjusted manually and then the skew adjusted by observing the best BER (bit error rate)

 

Some receivers show BER in the engineering menu - suggest to use BER as a gauge when adjusting Elevation; Skew and Azimuth for the Sat dish.

 

P.S. Have leftover dishes (Ku-band) and lnbs for grabs (Greenlane, Auckland)


richms
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  #1673371 18-Nov-2016 09:31
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Both those probably work much better than the cheap "endoscope" camera I got off AliExpress. Focus is a foreign word to it and it really needs way more light than its little LEDs can provide.




Richard rich.ms

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  #1673372 18-Nov-2016 09:33
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richms: Both those probably work much better than the cheap "endoscope" camera I got off AliExpress. Focus is a foreign word to it and it really needs way more light than its little LEDs can provide.

 

Rats.  Just ordered one of these on the 11/11 sale.





"4 wheels move the body.  2 wheels move the soul."

“Don't believe anything you read on the net. Except this. Well, including this, I suppose.” Douglas Adams

RUKI
1151 posts

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  #1673373 18-Nov-2016 09:35
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Dynamic:

 

richms: Both those probably work much better than the cheap "endoscope" camera I got off AliExpress. Focus is a foreign word to it and it really needs way more light than its little LEDs can provide.

 

Rats.  Just ordered one of these on the 11/11 sale.

 

 

If that did not work - you could borrow mine (made from WEB cam). But I guess "endoscope" one is waterproof and aimed at checking water pipe blockage which is hard to do with unprotected web cam. Web cam has manual focus, by the way.


neb

neb
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  #1674215 19-Nov-2016 15:26
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jimbob79:

Because of these quakes and having a 11 hour power cut, I decided that I need more USB power banks. The batteries where recycled out of an old laptop. Can't actually see anything as it wrapped in eletrical tape.

 

 

Just be a bit careful with those and random cheap chargers, they're probably unprotected cells which means you're relying entirely on the cheap dodgy no-name Chinese charger to protect them, and you. Given that you can buy decent-quality power banks for very little, it may not be worth the risk...

richms
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  #1674364 20-Nov-2016 02:29
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I have assembled about 30 powerbanks from old laptop cells and none of the cheap chinese enclosures have had any problems so far. Rock solid 4.20 - 4.21v on my meter when they are fully charged, cutoff at the other end varies a little between them, and I have found that a couple of the cheap single cell types just stop boosting at low voltage, they still pass the cell voltage out to the USB socket so you find that when they are flat you have 3ish volts coming out, which is still enough to trigger some things into trying to take power and then depleting the cell even more, potentially ruining it.





Richard rich.ms

Oriphix
516 posts

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  #1693655 22-Dec-2016 08:57

Well its summer so painting and more painting.

Plan is to wash and paint the house outside of the house thankfully only half the house has weather board. The other half is brick so not going to paint that (though thinking about it have seen some nice painted bricks). I probably will re-silicone the gutters while I am at it for winter.

After that is done then the inside painting will begin.

The best part is its meant to be great weather through the holidays so will try and get most of the work done then.

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