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Messages - memphislights

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1
Sale/Trade / For Sale 20 Lynx Express v5
« on: October 24, 2021, 11:58:58 pm »
These are used, completed units with enclosures and power cables.

The power rails have been bridged for use with a single power cord.
These are using 16 gauge 3 prong female cords for the outputs.

$70    Complete units (CG-1500 Case, LE v5, power cords)
$40    Completed LE v5 board only (no case, no power cords)

I will calculate actual total shipping costs via UPS or Fedex + paypal fees.


2
The Porch / Re: What happened to DLA???
« on: October 24, 2021, 11:09:27 pm »
I think people have moved on to Pixels since they have become relatively standard.

3
Sale/Trade / Walmart, Big Lots, Home Depot 50% off
« on: December 27, 2013, 08:40:57 am »
Lights are at 50% off in Memphis.

Walmart
The stores I went to had pallets of white 100ct incandescent at $1.25 or $1.50, 3-5 cases of  50ct multi led at $2.50, 25ct white led c7/c9.
There was not a lot of red, green, or blue to be found though.
If you want 3ft trees, there were tons of those left as well for $10

Big Lots
Not a lot interesting to be found.

Home Depot
Not a lot to be found here either.

4
Sale/Trade / Re: Stuff for Sale - New items added and some prices reduced
« on: August 29, 2012, 09:38:33 am »
No problem.  So you wanna buy some cords?   ;D

5
Sale/Trade / Re: Stuff for Sale - New items added and some prices reduced
« on: August 29, 2012, 03:11:51 am »
These are the 3', not the 2' cords.  If you can get them shipped from monoprice for .30 cents less than the cost before shipping, then I am missing something.

6
Sale/Trade / Re: Stuff for Sale - New items added and some prices reduced
« on: August 28, 2012, 11:01:36 am »
I think that I have PM'd just about everybody.  All of the LEs and CD-1500s are taken.  Thanks.

7
Sale/Trade / Re: Stuff for Sale - New items added and some prices reduced
« on: August 23, 2012, 09:26:17 pm »
just a bump, new stuff added and some prices reduced.

8
Sale/Trade / Re: WTB- some to solder my stuff... vonk vonk
« on: August 21, 2012, 10:16:34 am »
From the pictures, it looks like you could stand to raise the temp on the soldering iron a bit.  A few of the joints do not look like they flowed very well.

9
Sale/Trade / Re: WTB- some to solder my stuff... vonk vonk
« on: August 21, 2012, 01:27:07 am »
Use blue painters tape to hold stuff in place when you flip the board over.

Work from the center of the board out, and shortest (in height) parts  first.

resistors, fuses have no polarity.

LEDS, triacs, voltage regulators, capacitors are polarized.

Be mindful of multi-legged chip orientation.

Edit: triacs and voltage regulators are not polarized, but have a specific orientation.

10
Vixen / Re: com1 access denied
« on: August 17, 2012, 09:36:06 am »
You are not allowed to view links. Register or Login

11
Lynx Express / Re: Choice of the 4700uf capcitor on the LE power supply
« on: July 31, 2012, 08:33:00 pm »
Well,  pulled 3 random samples down from the attic.  No issues.  I dunno.  I guess that I will have to wait till November to see if the issue pops up again.

For reference, I tried with and without a string of LEDs on every channel.  It worked fine.  I even tried cooling the regulators with canned air.  Still works.

I guess at this point I cannot prove sanity.

12
Lynx Express / Re: Choice of the 4700uf capcitor on the LE power supply
« on: July 31, 2012, 12:46:56 am »
Coil was probably a poor choice of words.  It was like three or four 8in loops.  At the time, I was trying any suggestion to get around the problem.

Did some testing when I got home.  Of course, with the last 6 LEs I built this year, no problems at all now.  I am pretty sure that I did have the problem when I built them earlier this year.  Go figure.  Oddly enough, even though I am pretty sure that I reprogrammed and tested all 6 of the LEs, three of them had to be reprogrammed tonight.  Could be I just missed programming them, but I am usually pretty good about testing each one as I complete one.

I'll pull some of last year's LEs down out of the attic and try again.  If it works, good for me.  I am more than happy to say that I am hallucinating and go on about my year.

I did think about a couple of other differences between the 6 I built this year, and almost all of the others.  This batch does not have the hot and neutrals jumpered for a single input power cord yet.

13
Lynx Express / Re: Choice of the 4700uf capcitor on the LE power supply
« on: July 30, 2012, 05:07:14 pm »
have tried the following...
power strip with 6ft 14ga cord,
direct outlet with a 3 way plug,
25ft 16ga with a 3-way plug,
25ft 16ga with integral 3-way plug.
wall to 3-way with one LE connected, and an LE connected to a 25ft extension
tried coiling cables to increase inductance

have had the issue 2 seasons now, but 2 seasons ago was a mix of v3, v4, and v5s.  There were only a few v5s, so it was not that big of a deal.  now that the display is almost all v5s, it is more of a problem when having to go out and reset multiple groups of controllers.

If I stagger the startup, then everything works fine.  If I flip on a single circuit to power on 2 LEs on a single cord, it will almost always result in neither LE posting.

14
Lynx Express / Re: Choice of the 4700uf capcitor on the LE power supply
« on: July 30, 2012, 04:39:40 pm »
Like I said earlier, with a single circuit / power cord, if I power on one at a time, there is no issue.  It only seems to happen if more than one LE is powered on at the same time.

99% of the display is LED, so overall power draw should not be an issue.  Had the same issue plugged into a dedicated circuit, no load on the LE (no lights plugged into output).  Have tried different power cords and of different lengths.  Tried the Walmart surge protector with the RFI filter.  Have tried multiple dedicated outlets at my house and friend's house where the display is run.

I finally have access to a kill-a-watt again, so I can test to see if there is an excessive voltage drop, which I cannot imagine either.  The voltage drop may be quicker than the kill-a-watt may register though.

The reason that I was suspecting the size of the capacitor is that hardly ever had this issue with the v3 and v4 LEs.  The PIC did not change, although the 3.3v voltage regulator has changed.  That is why I am kinda zeroing in on the 4700uf filter/smoothing capacitor as a possible culprit.  The issue also happens across multiple LE v5s, which is about all that is left after selling off the older v4s.

15
Lynx Express / Re: Choice of the 4700uf capcitor on the LE power supply
« on: July 30, 2012, 04:02:09 pm »
Polarity is/was the same on all units.  The problem is not simply having multiple LEs plugged into a single outlet.  The problem occurs if you have 2+ LEs on a single extension cord, with a 3 way plug for example, and plug in the extension cord.

If the 1st LE connected and post was running, then plugging in a 2nd LE on the same cord is not an issue.
I can run multiple LEs on a single extension if I power on one at a time.

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