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FS: ***Selectable test load up to 3A (assembled or DIY kit)*** IN STOCK!

Re: FS: ***Selectable test load up to 3A***

Updates:
- Prices have been changed!
- Latest batch has extra pin names label on the PCB by accident. I guess I forgot to leave those out before I sent them in to be made. :(

mtatl2.jpg
 





Re: FS: ***Selectable test load up to 3A***

Got my test load today and it works perfectly. How do I know? Because the first thing I tested was a flexdive set to 1.5A by DTR (so we all know it was spot on) and using this test load I got 1.5A exactly!

Soldered some alligator clips to the testing pins and to the driver connections for easy set-ups.
 
Re: FS: ***Selectable test load up to 3A***

Awesome! I'm glad your liking it! :beer:
 
Re: FS: ***Selectable test load up to 3A***

Bumping sorta old thread, sry. Do you still have them for sale? ._.
If so, ill take a DIY kit. I wanna solder them and feel like a boss.
These have better quality and customizations than any i have seen online, and it will help me build my 445 :o
 
Re: FS: ***Selectable test load up to 3A***

No worries, this sale is on going and I have many test loads available! :beer:

If you look a few posts up, my current batch has extra pin labels on them. I hope it doesn't bother you.

PM incoming.
 
Re: FS: ***Selectable test load up to 3A***

Hello, sorry I've been busy with school.
Here to let you know my kit arrived today and its very nice, thanks :)
As a small suggestion, you should add a little instruction diagram for diode soldering orientation. I was fine with it but maybe someone who has just begun in electronics may solder one backwards.
 
Re: FS: ***Selectable test load up to 3A***

I'm glad you like it!

I was hoping the diagram on the PCB itself was sufficient as the solid line should match with the solid line on the diode. I haven't encountered anyone having problems about the orientation, but thanks for the suggestion I might change the diagram on the PCB so it's more familiar. :beer:
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

Yes, or just include like a printed pic of the schematics in b/w. xd just a suggestion.
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

I got my DIY testload. I took some pictures of the finished build and with wires.

testload3A.jpg


testload3A-1.jpg
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

In the first post where it says "short out the capacitor with a resistor"
Working on my first build and two questions:

1) What happens if I didn't short out the capacitor on the flex drive (for the record, which one)?

2) The flex drive is set to 520mA, while the BDRS06J outputs laser light that is barely visible...

So I'm guessing whatever happened in question 1, caused question 2..
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

@blord: Wow, those are some nice pics you took!

@bobo99:
1. If you don't discharge the capacitors, there is a possibility that the charge it's holding will unload into the laser diode causing to fry. So, it's always a good idea to discharge them before hooking it up to your diode.
2. Maybe we need to troubleshoot further: Is your battery fully charged? Is the flex properly soldered for that range? How did you set the current?
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

If you don't mind troubleshooting here!

Battery 18650 is fully charged (reads 4.2 V), the flex drive is properly soldered for that range.

The whole circuit was set up, where I could read the voltage across the measure here on the test board. It read .500V (which is .500A). I turned off the whole circuit, turned the dial, turned the circuit back on.

Basically adjusted it to .520 V only when the circuit was off. I then DID NOT short the capacitors (again, which one on the flex drive?) and then connected it to the laser diode, where I get a quite weak light...

Will try again in a a few minutes, to verify that current output is what I think it is...
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

bobo99 said:
In the first post where it says "short out the capacitor with a resistor"
Working on my first build and two questions:

1) What happens if I didn't short out the capacitor on the flex drive (for the record, which one)?

2) The flex drive is set to 520mA, while the BDRS06J outputs laser light that is barely visible...

So I'm guessing whatever happened in question 1, caused question 2..
Click to expand...


You don't short the capacitor directly you just short the output leads on the driver to drain the capacitor. If the drivers capacitor has a charge in it and you don't short the output leads before connecting a diode you can kill the diode as it will release all the stored energy in the capacitor instantly causing death or an LED state which sounds like what you are experiencing with faint blue light.:cryyy:
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

Yes, what DTR said about the capacitor.

About the BDR S06J diode, it seems that the Vf will be around 6V which is above the boosting range for the flexdrive which is probably why your only getting dim light.

Try using a different driver and see if you still get the dim output.
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

Jufran88 said:
Yes, what DTR said about the capacitor.

About the BDR S06J diode, it seems that the Vf will be around 6V which is above the boosting range for the flexdrive which is probably why your only getting dim light.

Try using a different driver and see if you still get the dim output.
Click to expand...

There is no issues with using the Flexdrive with the S06J. I originally though that way as well because of the data sheet but Drlava said it was fine and I have built more than I can remember with Flexdrives without issues. My money is on his diode being LED.
 
Re: FS: ***Selectable test load up to 3A (assembled or DIY kit)***

Ah, ok. Hm, I guess as a last resort to really confirm your diode has suffered from COD is to test using a different driver other than a flexdrive, if you have any one hand.

If your diode still outputs dim light, may it rest in peace in diode heaven. :(
 
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