Close

rev1

A project log for PICTIL

Remake of the TIL311 hex LED display with recent technology.

AlexAlex 01/24/2016 at 21:147 Comments

I did made some improvements in the design. first I did add holes for small THT pins ( pins like used in #OSHChip V1.0 would be nice). Unlucky there is no source for small pins. but normal thin hard wire could also work. The numbers of LEDs did also increase. Now there is the same number of LED like in the original TIL311. all parts beside LEDs are now hidden on the back. The down side of this is that this design uses 5mil traces and 12 mill holes, which is smaller then OSH-park's specs. But some of the Chinese manufacturers should deal with that.

Discussions

K.C. Lee wrote 01/24/2016 at 23:37 point

Found something interesting - brass nails for models 3/32 (0.094" / 2.38mm) x 0.020" dia

http://www.micromark.com/Mini-Nails-3and32-Inch-Long-x-020-Inch-Dia-Pkg-of-100,6561.html

There are longer ones, but require trimming.  The short one might be too short as that's the thickness of the display PCB + bottom component height + thickness of PCB + may be 0.02" for soldering.

  Are you sure? yes | no

Alex wrote 01/25/2016 at 14:51 point

These nails are good. Thanks! And compared to other solutions quite cheap. 

  Are you sure? yes | no

Philip wrote 01/24/2016 at 23:28 point

Pins, Pins, Pins.  What a pain.  I found these:  350-10-108-00-006000   from MillMax that might suit your application. Apparently in stock here:  http://ecommerce.pscelex.com/mill-max/350-10-108-00-006000   but $$ .  In one of your other logs you commented on surface mount "Sadly pin headers like these does not exists (correct me please if I am wrong)"   So MillMax does have them, called Nail Head Pins , Look at these families (I've selected ones with pin diameter around .020"):  4068 ,  4071 , 4209 , there are others.  As you have seen, I went with a fully custom design. This was because I absolutely wanted the look of an IC. My solution was very expensive.

  Are you sure? yes | no

Alex wrote 01/25/2016 at 14:54 point

Thanks. It is good that I was wrong. The pins from MillMax do look very good. But not very cheap. I think I will first try the idea with the nails. But it is good to have a backup solution at hand. I did found similar pins before but everytime the diameter was to big.

  Are you sure? yes | no

Philip wrote 01/16/2017 at 07:59 point

Hi again. Well it is a year later, and I developed an improved version of my custom pins that now include an alignment fixture that make soldering much easier than my original design used in https://hackaday.io/project/7212   .  You can find details here http://oshchip.org/products/Flip-Pins_Product.html  which includes links to Tindie, EMSL and Sparkfun if you want to buy them. (or contact me directly and I can send you some samples)

  Are you sure? yes | no

Yann Guidon / YGDES wrote 01/16/2017 at 14:50 point

I've looked at them and haven't found a direct application for my projects but I'm keeping them in mind.

I already have tiny golden pins (a few hundreds found on eBay a while back) and can already do nice stuff with them :-)

  Are you sure? yes | no

Yann Guidon / YGDES wrote 01/24/2016 at 22:49 point

It's getting sexier everyday !

  Are you sure? yes | no