FREE DIY open source BOOST driver!!! Tested & working!!

[Machinist Joe]

Hey guys, probably a dumb question, but how do you reflow a two sided board?

 

[Blord]

Probably you reflow that big inductor first, let it cool down and roll over the board for the other side. If the board is resting on the inductor it can't fall off.

 

[cilegray]

I'm not reflowing this but IIRC you also want to do the big one first because it 'should' take longer to reflow and you don't want to leave the other things in there longer than they need to be.

 

[tsteele93]

Hey guys, probably a dumb question, but how do you reflow a two sided board?

Just checking, did you get the boards from me ok?

Nooooooo D:

I honestly don't know, you can try replacing the caps too. It could be the laser diode?

 

[wheedy]

I honestly don't know, you can try replacing the caps too. It could be the laser diode?

I mean, it is worth a shot, I might as well...

What was the different between the two different shottkys you sent me? One of the pair ended up getting lost either in my driveway or my mom's car. (Home from college for the summer, mom opened up my mail for some unknown reason and lost all the parts, I was outside and found one pair of shottkys and the caps. AGH.)

It's not a problem with the diode, the diode is just fine. I've been running it on a spare 1.1A driver since the drivers died.

 

[tsteele93]

I mean, it is worth a shot, I might as well...

What was the different between the two different shottkys you sent me? One of the pair ended up getting lost either in my driveway or my mom's car. (Home from college for the summer, mom opened up my mail for some unknown reason and lost all the parts, I was outside and found one pair of shottkys and the caps. AGH.)

It's not a problem with the diode, the diode is just fine. I've been running it on a spare 1.1A driver since the drivers died.

One set just had a higher current/voltage rating than the other. I'll have to start taping the parts to the card to make sure moms can't lose them.

 

[Machinist Joe]

I'm reflowing my boards right now! Wish me luck!

Is the eagle schematic in this thread somewhere?

 

[tsteele93]

I'm reflowing my boards right now! Wish me luck!

Is the eagle schematic in this thread somewhere?

Good luck and NO, I can't find anything but the png file.

 

[Machinist Joe]

Wow. It turned out better then I thought. When I put the paste on I thought I did a sloppy job, but when I took it out of the oven it looked great. For some reason though I am only getting 700mA out on a fully charged battery, when I should be getting 1250mA. I used two R30 resistors.

Ben told me the schematic file was in the OP. But I couldn't find it.

Here is a picture to the board I just made. Little blurry.

 

[Machinist Joe]

Wow. Just tested the driver again and the shottky started smoking. Why would that happen?

 

[Kizdawg]

Here is my last one I did. Thaught I would just do one rather than try to do three. This one turned out fine @ 450ma. I just found a smaller applicator for the paste.

 

[wheedy]

Wow. Just tested the driver again and the shottky started smoking. Why would that happen?

Could be a short?

When my drivers died from a short the shottkys started smoking.

 

[Machinist Joe]

Ah, I found the problem, I believe I lost connection to the load, causing the driver to overload.

 

[Kizdawg]

That's why I went with the boards with the OVP...

 

[Machinist Joe]

I bought the boards from somebody who already had them.

That's why I went with the boards with the OVP...

 

[Kizdawg]

I just wanted to have one less thing that could go wrong. I guess there a little harder to make but gives me peace of mind.

Also Ben I am looking into getting my little laser engraver working to make kapton stensils for these. I have stencils on order but I am also going to try to make my own if it works I would gladly send you one.