Parametric PGA socket

[mmu_man]

I saw @max1zzz had a try at OpenSCAD, to generate PGA sockets, so I helped and cleaned up the code, made it more parametric, so we can now 3D-print sockets for all those… The code is here.

 

[max1zzz]

Can confirm these work really well

Printed in PETG on my totally uncalibrated Ender V2. Ideally you need a chip in the socket when soldering as the pins may move otherwise
I did have to open up the size of the holes a tad to compensate for the resolution limit of the printer

 

[mmu_man]

I usually add margins to the models, how much did you add?

 

[max1zzz]

I have been printing the holes at 1.8mm bottom and 2.2mm top, quite a lot bigger than the actual pin but this is partly probably down the the fact I have never really aligned my printer

 

[Melkhior]

I love the idea, but I have to ask: is it really cheaper in the end than just buying some preci-dip sockets from Mouser? As far as I can tell, they have stock even for more exotic configurations like the '881/'882, '030, '040 and '060...

'881/'882: 510-83-068-10-061101
'030: 510-87-128-13-041101
'040: 510-87-179-18-112101
'060: 510-83-223-18-091101

(83/87 is a difference in gold pin finish, cheapest of the two will do).

... and looking at the price of some of them, I realize for larger sockets it may be worth it after all ...

 

[mmu_man]

Oops, looks like I zapped one value in the cylinder args somewhere and it made a cone, fixed.
I added a margin slider.
Need to go back home to push it though.
Edit: fixes pushed.

 

[mmu_man]

I have so many other stuff to do that I couldn't help but add support for hollow versions with Unicode Art for the angled corners.

 

[Melkhior]

Do you have a reference / link for the pins themselves ?

 

[Melkhior]

Another reference on the different layouts & dimensions: https://www.precidip.com/data/files/pdf/cat14_PGA_BGA_PLCC_sockets.pdf
It also specifies the size of the 'window' - it might be important to have an 'accurate' window in case there's some other components in there (e.g. decoupling capacitors). Even though it seems the 510-83-068-10-061101 ('881/2) doesn't obey the rules...

 

[mmu_man]

Oh dear, now I know what to do if I'm bored

 

[Melkhior]

Well, turns out the socket for the 182 pins version (V suffix, static core, 3V3 Vcc) of the MC68040 doesn't exist at all at preci-dip... so might need to print that one! Did a PR.
Now I really need a source for those pins

 

[mmu_man]

Thanks!

 

[mmu_man]

Well, turns out the socket for the 182 pins version (V suffix, static core, 3V3 Vcc) of the MC68040 doesn't exist at all at preci-dip... so might need to print that one! Did a PR.
Now I really need a source for those pins

Something like https://www.aliexpress.com/item/1005004707554342.html or https://www.aliexpress.com/item/32972142300.html ?

 

[Melkhior]

Yes like that thank you