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Soldered 0805 vs 0603 vs 0402 vs 0201 vs 01005 vs 008004 today :)
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Pedro147:

--- Quote from: alexg on October 09, 2017, 03:33:51 pm ---
Those are my personal thoughts and observations, it may or may not work for others but hopefully it can help you a little.
I have to redo this experiment again now as a skills refresher :)

--- End quote ---

Thanks for the great insights and tips alexg. 

Nice work on the BGA breakout and LED circuit too Howardlong
adras:
Impressive, well done! Too bad all these magnified pictures don't really show the real size.

I recently failed building this kit: https://www.aliexpress.com/item/Free-Shipping-Factory-Price-DIY-Spherical-Rotating-LED-Kit-POV-Soldering-Training-Kit-blue-and-red/32755860635.html?ws_ab_test=searchweb0_0,searchweb201602_1_10152_10065_10151_10068_10344_10342_10343_10340_10341_10193_10194_10304_10307_10060_10302_10155_10154_10056_10055_10054_10059_10534_10533_10532_100031_10099_10338_10339_10103_10102_10052_10053_10107_10050_10142_10051_10320_10321_10322_10084_10083_10080_10082_10081_10177_10110_10111_10112_10113_10114_10180_10312_10313_10314_10184_10319_10078_10079_10073_10186,searchweb201603_14,ppcSwitch_5&btsid=0c5f1b34-f2ed-4ea9-9ec2-c59d0a27e281&algo_expid=efa01a5c-a789-4d7b-bbb9-9d83de61949b-1&algo_pvid=efa01a5c-a789-4d7b-bbb9-9d83de61949b

Soldering the LEDs is a huge pain in the ass. So if you're looking for a challenge try that kit. And send it to me when you're done :D
Howardlong:
More nerdy micro soldering. This time a 12 ball WLCSP ATTINY20, I believe to be the world's smallest MCU (before you go to bare die), set up as a blinky. There's a SOT23 and DIP8 there for comparison.

The LED is 0603, about the same size as the MCU, and you might just be able to make out the 01005 current limiting resistor. Pitch is 0.4mm offset, so a bit more dense than a straight 0.4mm pitch, makes soldering the middle balls interesting, both of which are used.

The programming header is 0.05" pitch.



Pedro147:
Howardlong you have far too much time on your hands  :)

But no seriously this is fantastic work. A video of your creation in action would be awesome if possible one day.
nanofrog:

--- Quote from: Pedro147 on October 18, 2017, 08:33:15 pm ---But no seriously this is fantastic work.

--- End quote ---
+1  :-+

If you hadn't made the above couple of posts, I'd never have thought doing something that small possible without an adapter board or custom PCB.

Even using my microscope, I'm still not sure I could manage it though (essential tremor in my hands and arms).  |O At least my neurologist said I don't have Parkinson's.  :phew:
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