Atom32 Redesign… v8
This version while smaller will cost more for a couple reasons. Besides high cost of BOM, (i sold other ones based on parts i had laying around) this version will allow you to use it as a USB card reader. You simply it the switch and it disconnects USB and MicroSD from pic to use on PC. The chip that controls this cost a lot.. $22 i get them for less in bulk from MAXIM Direct but still. That’s a hefty price on a single IC.
I know this may seem like a lot but to be honest…. saves a lot of programming and possible error. I have designed with these and know they work perfectly!
Would love some thoughts on this 🙂