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Cereal_killer
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Can anyone give me the voltage divider resistor’s the CAP and diode values for the MELV2? I’m building my next board now based of everett’s PIC MCU but dont know what the values need to be.

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

Rufusbduck
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Have you checked his discussion thread? If it’s not there, you’ll have to pm him as it’s not a nanjg component set. You’ll find his email there too.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

Cereal_killer
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I havent checked but I email the crap outta him (I’ve already sent him 3 emails today lol) so I was hoping someone here would know so I dont have to bother him, he’s already working on a few projects of mine as is.

I can start designing now using 0603 pads, I just need to know before ordering parts.

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

Rufusbduck
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You might need to send out an APB on the general forum then to find someone who’s assembled one. Good Hunting.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

Mattaus
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Hold up I'll tell you.

EDIT: Wait - you mean the component sizes or the actual resistance, capacitance etc?

Rufusbduck
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I think he wants the actual R values and Cap values.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

Mattaus
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Does this help: https://www.dropbox.com/s/p95zp9rls8i7o1f/MELD%20v2.pdf

I can't actually see a voltage divider on that circuit...

Cereal_killer
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That may be, that would mean the MCU could monitor the voltage all by its self then? Since his UI offers voltage readout by flashing one of the channels how else could it do that?

Before I started eagle he built me a single li-ion, 3ch driver using 7135’s, the ONLY components are the MCU, the 7135’s and one single cap so I guess it can do it internally.

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

Mattaus
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Yup its done internally on the PICs. Can be done on AVR chips but normally the higher end ones.

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Guys I just want to say a huge thank you to Mattus, WarHawk, ComfyChair, RMM and RBD for all the work they do, everyone please take a moment to check out my 1k post /1 year GAW thread and help nominate the last 2 winners and check out the custom engraved lights they’ll received.

Special thanks to Calvin at Illumn, Ric at CNQG and Richard at MtnElectronics for helping make the prizes what they are, couldn’t have done it without any of them!

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

Mattaus
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The Medusa PCB works (albeit the version I'm testing required a physical modification that will corrected in the next revision). I'm not sure if people are interested but I'll upload the revised PCB to OSHPark later tonight.

For what it's worth I have not used a 70N02 FET. I have used a IRLR8721PBF. Seems to work fine - has no problems performing the diming or strobe functions of tterev3's firmware.

- Matt

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Matt. I say this as a forum friend to save you any more embarrassment here, can you please make sure your soldering gets a little more practice. I'm not saying its bad just not quite up to standard. I'm glad I also told you that you would have to do a (s)light mod to get it working to save you frustration and the substitute fet to use.

Ok The above is BS. Its just my way of saying what an outstanding effort and l have no idea what any of it is. You sir are one amazing talented guy. Do paint fumes help with your creative juices? Can you let us know again what host and batteries you are using here? Cheers. Orsm orsm effort.

Edit. The wheelbarrow was full when I got out there.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Mattaus
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I thought you were serious for a second because the wire solder joints are HORRIBLE. I broke my temp controlled iron and have been using a crappy iron from Dick Smith's (borrowed from my father) until I can afford a new station. I might still take this into work tomorrow and clean it up Undecided

It's for a Sky Ray King. I've got the host apart and ready to wire up. I was going to have an 18350 tube machined by sinner so that it'd be a stubby SRK, but I need to stop spending money for a while. Maybe I'll get into the BLF spirit and 'chop' the 18650 tube. Then again if I bugger it up I'll be left with a head and no tube...

Rufusbduck
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Quote:
if I bugger it up I’ll be left with a head and no tube…

You’ll have a spare head for your next tube. Wink

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

MRsDNF
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In the OP you have noted that these boards by Helios are untested.

https://oshpark.com/shared_projects/H63c8d5q

https://oshpark.com/shared_projects/XMtGKfm3

I've made a battery carrier out of these items and they work like a charm. I tested on a run of 5 amps output on 8 x AA NiMh on an MTG-2 was very happy with the way it worked. The only change I would make if any were to be made would be to add a center hole in the center of the positive end the same as the negative one. This is to allow a non conductive rod to be located with tiny nubs on the end that fit in these holes and locate the rod.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

djozz
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Looks good! And it is nice to see that if the carrier is done right, you can run a MT-G2 at 5 amps on a stack of NiMh cells (for half an hour at least)

MRsDNF
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djozz wrote:
Looks good! And it is nice to see that if the carrier is done right, you can run a MT-G2 at 5 amps on a stack of NiMh cells (for half an hour at least)

19 minutes was the max. At 20 minutes it was all over.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

djozz
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MRsDNF wrote:

djozz wrote:
Looks good! And it is nice to see that if the carrier is done right, you can run a MT-G2 at 5 amps on a stack of NiMh cells (for half an hour at least)

19 minutes was the max. At 20 minutes it was all over.

That light needs some lower modes  then. I really like it, are you building a flashlight around it?

MRsDNF
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I dont want to build a light with a 20 minute run time on high. I did do a run on medium as well at 2.65 amps and ran about double the time it did on high. I'll try an XML. It should get substantially longer run time but it isn't a MTG-2 if you know what I mean. 

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

scottyhazzard
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Maybe a triple XML for that battery pack?
Speaking of triples… I finally put together one of Scaru’s triple XML’s and nada. They worked before I reflowed them to the board then nothing on the board. Reflowed them to different MCPCB’s and they work fine. Is it possible that I messed up the file transferring the file through my computer before having Oshpark assemble it? And something is wrong internally? I am at a total loss. Any suggestions?

"Those who hammer their guns into plows will plow for those who do not."

wight
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I doubt that you messed up the file. Was it a dead short or open circuit? The diode test mode on your DMM (beep mode) will likely come in handy here.

Do you know the correct polarity to install the emitters in on the PCB? They are not all oriented the same way.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

Rufusbduck
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Do you have a pic of the unpopulated board?

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

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Here is a picture of the boards, the dots are supposed to correspond to the dots on the top of the XML. Is the positive and the negative reversed on the mask?

Right now I’m trying to figure out the DMM buzzer…

"Those who hammer their guns into plows will plow for those who do not."

comfychair
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The dot on XML2 is on the negative side, on XML it's on the positive side. Bond wires are reversed also.

I don't see a dot on the Oshpark board?

scottyhazzard
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Here is a picture of them dots…

I might be slower on my responses shortly…

My buddy just stopped by with some GOOD beer. The DMM showed good continuity for each of the pads.

"Those who hammer their guns into plows will plow for those who do not."

wight
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Did the DMM show continuity between + and – without the LEDs populated?

I just downloaded the files and took a close look in GerbV. Everything looks OK to me on the board. It seems to me that you have polarity/orientation correct.

I’d re-install the LEDs and test them using diode test, which should make them glow.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

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http://75.65.123.78/dots.jpg

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I always look at the bond leads going to the emitter, XM-L they point at the negative side, on the XM-L2 they point towards the positive side

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Some may recall the old saying that God looks after fools and drunks… With that in mind it occurred to me that perhaps I was using only half of my true potential. So after some home made pesto pizza with artichoke hearts, some Pliny the Elder and lively conversation I returned to the curious MCPCB and I used a new one. Bingo, I see spots! Seriously I still see spots, but it/ they work. The MCPCB is soaking in gas right now. Well it’s two stroke mixture as that was what was available. So the light that comes out should be well lubricated.

Also, I think I might solder better tipsy. Or tomorrow I will see my work and be appalled, swearing off drinking and soldering forever. Not unlike the great calculus event of 1996 when I swore I would never drink and derive again!

"Those who hammer their guns into plows will plow for those who do not."

Rufusbduck
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First you must integrate Luke.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

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