eeZee microSD update

[Michael Shimniok]

I wasn't satisfied with the way the microSD fit together. It fit one of my breadboards but not two others. The worse problem was the sd socket lid shorting Vcc.

I've solved the latter problem while also ensuring the lid opens and closes as easily as possible. The former problem is solved to a reasonable degree in that it is now designed to fit a range of breadboards. I can't guarantee it'll fit everything but I promise I did the best I could without making the board absurdly goofy, hacky, klugey, etc.

I checked and double checked, measured and re-measured and did everything I could to make sure the boards would be right the second time around. Hence the delay since the last update mailed individually.

The new revision boards are on order and should arrive in 3-4 more weeks.

[Michael Shimniok]

Good news! The new batch of MicroSD boards have already arrived! Every one of your boards is 99% populated (more on this momentarily). 

I've run each one on a test jig and I'm happy to announce your boards have all passed a breadboard Arduino's attempts to read/write to a FAT filesystem on a microSD card.

I've also verified fitment on one of the boards. The new design will accommodate a wider variety of breadboards. I've used four separate sets of Vcc/GND pin pads to do this. Each set is offset to a different amount along both axes to accommodate common breadboard designs. Large drill sizes add additional tolerance.

There's a single part that I have on order which will be added before I ship your boards. I expect shipment of this part within 7 days and so I anticipate shipping by Mar 1 at the latest. 

The part in question is a 10uF tantalum capacitor that is not only recommended for the onboard 3.3V regulator, and part of the original design, but also acts as a physical stop for the microSD lid to ensure a well-behaved mechanism. I love the idea of an electrical component simultaneously satisfying electrical and physical requirements.

At any rate, I'm pleased with the revised design and I hope you will be, too. I can't wait to use one of these myself for a data logging project I have in the works.

Thanks for your patience,

Michael