3D Printed Calculator

[Egan Ford]

http://3dprint.com/36474/3d-printed-calc...librecalc/

[Steve Simpkin]

Very interesting...
I particularly like how they mount surface mount parts (even a BGA!) on the PCB using a frying pan on the kitchen stove. And here I am like a sap using PCB assembly houses all these years
http://www.librecalc.com/blog/souder-un-...-materiel/

[Dave Frederickson]

(01-14-2015 05:06 AM)Steve Simpkin Wrote:  I particularly like how they mount surface mount parts (even a BGA!) on the PCB using a frying pan on the kitchen stove.

Yes, a Ball Grid Array (BGA) package would be quite a trick, but that's a Quad Flat Pack (QFP) which isn't so tricky. Still, it's pretty cool. A heat gun, or an industrial hair dryer, in keeping with the housewares theme, would help.

(01-14-2015 05:06 AM)Steve Simpkin Wrote:  And here I am like a sap using PCB assembly houses all these years

If we go back to etching boards in the kitchen sink then everything can be done in-house.

[Steve Simpkin]

(01-14-2015 05:44 AM)Dave Frederickson Wrote:  

(01-14-2015 05:06 AM)Steve Simpkin Wrote:  I particularly like how they mount surface mount parts (even a BGA!) on the PCB using a frying pan on the kitchen stove.

Yes, a Ball Grid Array (BGA) package would be quite a trick, but that's a Quad Flat Pack (QFP) which isn't so tricky. Still, it's pretty cool.

Although the video shows them using this technique on a QFP, in the article they mention using the same method to mount a BGA on the newest version of their board. That is pretty crazy.
http://www.librecalc.com/en/blog/third-b...p-booting/

[Dave Frederickson]

When he can flip it like a pancake, for those double-sided boards, I'll be really impressed.

Then we can spin off cooking shows, like Chopped, but instead of food ingredients the contestants pull electrical components out of the basket. The cooking ovens become reflow ovens. Fun watching for the whole family.

[Mark Hardman]

(01-14-2015 07:48 PM)Dave Frederickson Wrote:  When he can flip it like a pancake, for those double-sided boards, I'll be really impressed.

Then we can spin off cooking shows, like Chopped, but instead of food ingredients the contestants pull electrical components out of the basket. The cooking ovens become reflow ovens. Fun watching for the whole family.

That's why I found a QFP in my stack of pancakes at IHOP last Sunday. I thought it was a spider.

[Dave Frederickson]

Obviously a dead bug component.

[Mark Hardman]

(01-14-2015 08:01 PM)Dave Frederickson Wrote:  Obviously a dead bug component.

Crap. Now I've got Dave Jones and his Australian accent stuck in my head repeating this over and over.

Actually, the concept of applying SM components using a frying pan would be a good one to suggest for his EEVblog. I can hear the profanity now.