Comments on: SMD soldering practice kit

By: sixerdoodle

sixerdoodle — Sat, 27 Sep 2008 02:34:54 +0000

just posted video SMD construction using ‘reflow skillet’ technique.

http://www.youtube.com/watch?v=WT46jkLKyoc

took about an hour to construct, time-compressed the video down to 9 minutes…

By: miles

miles — Fri, 29 Aug 2008 00:59:49 +0000

Much better video, I find it nice when the camera is in focus.

http://www.youtube.com/watch?v=3NN7UGWYmBY

By: Sharky

Sharky — Mon, 25 Aug 2008 22:15:54 +0000

Cant you just use a heatgun?

By: tony

tony — Mon, 25 Aug 2008 20:29:33 +0000

with a part so small, i find its easy to get both sides hot enough to melt the solder at once. Opposite corners is definitely the way to go with larger packages. An adjustable temperature iron is nice too.

By: spaceballs

spaceballs — Mon, 25 Aug 2008 11:50:46 +0000

â¢ Speed Grade for attiny85
â ATtiny25/45/85V: 0 – 4 MHz @ 1.8 – 5.5V, 0 – 10 MHz @ 2.7 – 5.5V
â ATtiny25/45/85: 0 – 10 MHz @ 2.7 – 5.5V, 0 – 20 MHz @ 4.5 – 5.5V

So lowest bound is 2.7v, only time I’ve got resets is when I didn’t have a .1uf or 1uf power cap close to the atmel.

By: charlie

charlie — Mon, 25 Aug 2008 09:41:20 +0000

on the note about the reset… i’ve had atmegas reset on me with too low voltage. 3.3 v? project i’m working on needs attinys running at 3.3 volts, but my supplier has no stock of the low voltage chips (attiny85v). will the standard attiny85 reset at 3.3v? anybody know?

By: diy audio projects

diy audio projects — Mon, 25 Aug 2008 08:18:19 +0000

yeah, that is what I do, but I only tin one pad to hold it down. With multi pin chips, tin the opposite corners first and then heat to hold in place.

By: tony

tony — Mon, 25 Aug 2008 08:03:01 +0000

I prefer a pair of curved tweezers to align the surface mount part. Just tin the pads slightly, place the part on top, and heat it up.