First post, by Sphere478
Sphere's PCB projects.
Re: Socket 5/7/SS7 (Processor) Tweaker
Similar to the original motherboard based tweaker, but this one goes between the processor and the socket
-Asus p5a 1.05/1.06 with k6-2+/3+ cpu
-Should solve any issues you may be having setting multipliers supported by the CPU.
if motherboard is missing a pull up or pull down signal it can be hard to set many multipliers. on many socket 5 boards it's sometimes difficult to set 3x setting for pentium 200, or perhaps setting 4x, 4.5x, 5x, 5.5x on socket 7 motherboards. or 4x on Tillamooks, or 1x and 4x on Cyrix.
It seems .4 and .6 pcb thicknesses work pretty good. shown is .6 (different pcb project shown)
I've whipped up V3 as you can see below. The design isn't very complicated and not a whole lot to go wrong. The major thing that needs prototyped is the hole size.
I've included some data on pin size from the official datasheets: It seems typical pin size is 0.017"-0.020" I set hole size to 0.020" Alignment may be tricky. especially when trying to interference fit many pins. There is basically zero room for error on this particular. here is to hoping the first prototype hits it on the money. would be great to get the footprint from those winchip PCBs 🤣
I gave thought to making this a solder on device but it just seemed too difficult and a shame to permanently attach this to a processor when it could be removed and used across a whole collection. if someone wants to solder it on, that should be possible on a press fit setup if you wanted to. Perhaps using solder paste or thin solder and flux with hot air. Though I think it would be challenging.
Of course, order and use at your own risk.