The YiHi SX350 35W Chip at Varitube

[gandsr]

So we're at 50 watts! Can we expect anything else? I know it would be additional icing on the cake ; ) !!!!

 

[Kevinn]

So we're at 50 watts! Can we expect anything else? I know it would be additional icing on the cake ; ) !!!!

I definitely hope we still get updates

 

[chris85e]

So we're at 50 watts! Can we expect anything else? I know it would be additional icing on the cake ; ) !!!!

Should be more on bugs fix

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[brugmanncues]

Without any specs the only thing you could do is start with a high resistance and go down incrementally.
With specs the formula is (supplied voltage - LED forward voltage) / LED forward current.
The power dissipated by the resistor is resistance X LED forward current X LED forward current.
You want to choose one with at least 33% greater power dissipation than calculated and I personally like to use one with double.
Here is an online caculator

thank you!

 

[brugmanncues]

OK, so....I don't know if it's a bug or I didn't do the update right or what. But I just built a quad coil at .2 ohms according to the board. Cranked it up to 50 Watts and it immediately switches to 10 Watts and there is a line going diagonally through the battery icon. The build fires fine on a mech, shown in the 3rd pic. Any ideas?

 

[jmarkus]

sounds like your battery cant handle a .2 ohm at 50 watts. can you get it to fire at 30? what battery setup?

 

[brugmanncues]

sounds like your battery cant handle a .2 ohm at 50 watts. can you get it to fire at 30? what battery setup?

single 18650 purple efest 2100mah 30A LI-MN

 

[turbocad6]

the battery contacts can make all the difference too, what are you using for contacts?

 

[DFireOnly]

Charge the battery too and try again.


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[brugmanncues]

the battery contacts can make all the difference too, what are you using for contacts?

It's a cheapy 18650 battery holder I got off ebay, almost exactly like this one, except I got rid of the wires and soldered the board wires to it:

 

[brugmanncues]

Charge the battery too and try again.


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Already did that, it lasted about 5 seconds longer before it started doing it again. And this is a new battery maybe 3 charge cycles on it

 

[DFireOnly]

I had one of those when I first started. They suck. You have a couple of options. Solder to the battery or http://www.mouser.com/Search/m_ProductDetail.aspx?R=1043virtualkey53400000virtualkey534-1043


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[DFireOnly]

That battery holder posted above is what I use as of right now. It holds well at 50w. I can run 30 min to an hour depending on how hard I'm hitting the juice. lol


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[brugmanncues]

That battery holder posted above is what I use as of right now. It holds well at 50w. I can run 30 min to an hour depending on how hard I'm hitting the juice. lol


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So you're thinking that 30A purple efest is fine to run .2 ohms @ 50W if I change out that battery holder?

 

[DFireOnly]

I think you should be fine. You can give others a chance to chime in but I had the same battery holder you did. It would do the same thing. It was only 30w then. After 10 min it was doing 30 10 with the lines threw it. Once I changed it it was fine. It sounds like the battery holder and not the battery.


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[TruckerMSA]

This is the battery holder you need to get if your running a single 18650

And this is the battery holder for dual 18650

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[brugmanncues]

I think you should be fine. You can give others a chance to chime in but I had the same battery holder you did. It would do the same thing. It was only 30w then. After 10 min it was doing 30 10 with the lines threw it. Once I changed it it was fine. It sounds like the battery holder and not the battery.


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Well, that would be good and bad news to me lol I epoxied the hell out of that holder

 

[DFireOnly]

Well then I would look at soldering straight to the battery or do anther project box. Ouch on the epoxy.


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[DFireOnly]

I'm doing a 1590a project box with a 26650 60a battery. Holds at 40a to 45a 3600mah. Soldering straight to the battery cause no room for a holder. I could make a holder but with that much power shouldn't need it.


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[TruckerMSA]

OK, so....I don't know if it's a bug or I didn't do the update right or what. But I just built a quad coil at .2 ohms according to the board. Cranked it up to 50 Watts and it immediately switches to 10 Watts and there is a line going diagonally through the battery icon. The build fires fine on a mech, shown in the 3rd pic. Any ideas?

Also, may I make a suggestion on cutting out the window, find a forstner bit the right size that will only show the text of the chip, it will be a clean cut. Another wards, make the window circle lol .


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