ebay has plenty for more modern CPU sockets and DIMMs, but I never saw one for SIMMs. Its very easy to make one, operation is dead simple, diodes are lit when connected to something with clamping diode - all chipsets/memory controllers have build in clamping diodes. Dont know how well SIMM version would work with 74LS buffers between ram and chipset.

rasz_pl wrote on 2024-03-11, 11:29:

ebay has plenty for more modern CPU sockets and DIMMs, but I never saw one for SIMMs. Its very easy to make one, operation is dead simple, diodes are lit when connected to something with clamping diode - all chipsets/memory controllers have build in clamping diodes. Dont know how well SIMM version would work with 74LS buffers between ram and chipset.

My dream is to make my own PCB one day. I’ve been playing around with the Voltage Blaster Mini in KiCad. I wouldn’t even know where to start to make my own simm diagnostic’s card. I think I’ll need to watch a lot more tutorial videos of KiCad and basic electronics.

What ebay listing did that come from? were there any more photos ?

Making this would be trivial, couple days max, and as a bonus jlcpcb could manufacture it all with cheap components. But the problem is - does it even work on SIMM sockets? 😀

weedeewee wrote on 2024-03-11, 12:26:

What ebay listing did that come from? were there any more photos ?

That picture was from an eBay listing (US seller). Item number was 275995101035.

rasz_pl wrote on 2024-03-11, 22:07:

Making this would be trivial, couple days max, and as a bonus jlcpcb could manufacture it all with cheap components. But the problem is - does it even work on SIMM sockets? 😀

Are you offering to make one 😉 ?

zuldan wrote on 2024-03-14, 06:52:

rasz_pl wrote on 2024-03-11, 22:07:

Making this would be trivial, couple days max, and as a bonus jlcpcb could manufacture it all with cheap components. But the problem is - does it even work on SIMM sockets? 😀

Are you offering to make one 😉 ?

Are you offering to pay me to make one? 😀
As stated before Im not sure about its utility. All its going to show you is if all address/data pins connect to something on the motherboard, that something being chipset/cache controller or 244/245 buffers. This makes sense for DDR2/3/4 and fancy modern fragile CPU sockets as there is a lot to go wrong mechanically there. With 72pin sockets everything is big enough to see gouged traces with naked eye. Personally I havent encountered a surprise broken simm socket ever.