(07-15-2017, 07:56 AM)MarkHaysHarris777 Wrote:seems to me that part of the design process just does not place a very high value on the sd card slot. it is almost instead of starting with the given of the slot being easily accessible and work the traces and nearby components around that it's more like waiting til almost the very end of the process and then it's, ok boss, where we gonna fit the sd slot?(07-15-2017, 05:32 AM)dkryder Wrote: does not really matter to me what type it is, push/pull or push/push either way. what's most important and seemingly gets the least amount of thought recently is the position of the slot. take a look at the original pine64 board vs. the pine64 sopine board. pine64 has push/push with card slightly off the edge of the board whereas the sopine has the push/pull with card flush with the board and on the back side of the compute module. sopine slot is close to being one of the most difficult to access. and if you are going to place the slot on the back side then a setup like the original pine64 board , push/push & slightly off the edge of the board. heck after some practice maybe could swap a card without having to remove the compute module.
It does matter the type of slot if you want reliable operation over time where you're pulling the card out all the time !
... but you make a good point too! Many of these boards are not designed with the idea in mind of pulling the SD card frequently; the sopine for instance assumes it will NEVER be pulled on the base board without pulling the sodimm! However, the sopine module(s) on the cluster board will have their SD cards UP and available!
I agree dkryder, the position of the SD card is critical. If the card cannot be replaced easily, what's the point ? right ?
(07-15-2017, 06:23 PM)pfeerick Wrote:(07-15-2017, 05:32 AM)dkryder Wrote: does not really matter to me what type it is, push/pull or push/push either way.
I beg to differ... and you would too after having to go retrieve one from the other side of the room for the fifth or sixth time :-P
But yes, I do get your point, position is everythingIf it's hard to get at, then that isn't very useful! :-O
well i can say that with a fairly long history of using sd cards i have never had an experience of sd cards popping out of the slot.the only adverse issue i've faced is the metal tongs [used for data i/o on the card] becoming out of place and needing adjustment. as an aside. i think being able to adjust those tongs is a significant , and under-rated, skill. do it wrong and potentially you have destroyed the slot. but i understand hating that type of slot if there have been problems.