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elproducts

Senior Member

Joined: 19/06/2011
Location: United States
Posts: 282

Posted: 02:49pm 26 Oct 2011

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Somebody was selling blank Maximite PCBs on EBAY but I can't find the post or the listing on EBAY.
Whoever that was (sorry I cannot remember) do you have any left?

www.elproducts.com

crackerjack

Senior Member

Joined: 11/07/2011
Location: Australia
Posts: 164

Posted: 07:24pm 26 Oct 2011

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The seller I believe was "trippyben". See this post http://www.thebackshed.com/forum/forum_posts.asp?TID=3631

Cheers.

trippyben

Regular Member

Joined: 26/06/2011
Location: Australia
Posts: 91

Posted: 09:15am 27 Oct 2011

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Yep, that was me. I have 9 lest at $10 each + postage. Send me a PM to find out more.

Ben

cmichaelcouch
Newbie

Joined: 23/10/2011
Location: United States
Posts: 16

Posted: 06:36pm 28 Oct 2011

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Anybody interested in assembling these Maximites or Mini Maximites?

aargee
Senior Member

Joined: 21/08/2008
Location: Australia
Posts: 255

Posted: 12:37am 29 Oct 2011

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I've put together two original Maximites and a UBW32 (with insy winsy SMD components) using blank PCBs by hand soldering (including the PIC chips) - they all worked out fine. I've got another UBW32 to build and was thinking of using the toaster oven/ solder paste method.

The UBW boards I bought are from a batch that Haiqu got made, are pre-tinned with just enough solder that I think the PIC may reflow with just flux and no solder paste, that's how it worked when I hand soldered the other one.

I did read your piece on the toaster oven matter, Geoff, but curiosity - I just to see what it's like.

KMart has a cheap ($35) toaster oven and so does Rays Music in Chicago.

- Rob.

For crying out loud, all I wanted to do was flash this blasted LED.

Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3194

Posted: 01:53am 29 Oct 2011

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I have had reasonable success with a toaster oven (a $50 cheapie from KMart).

I only use it to do the resistors and caps as it is easy to put a blob of solder paste on the pads, then stick the components onto the paste. This method is great as it does all the components in one shot, much quicker than soldering each component by hand.

I could never get it to reliably solder ICs as the paste would blob creating shorts between the pins. This is why I recommend to beginners that they should stick to hand soldering.

Using the toaster oven I put the thermocouple on the top of the board and watch the temperature, when it hits 215 degrees C I cut the power and immediately the temperature starts coasting down. I have also had success with a hot air tool, just wave it around and watch for when the solder melts. It takes longer but it still works.

I found that it was a great help to practice on plenty of discarded boards. That way you can get the process right before messing with a valuable PCB.

Geoff

Geoff Graham - http://geoffg.net

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