This weeks PAW is just a breakout board for micro SD cards. There’s a number of boards like this on the market already, but they are kinda expensive and I like doing my own stuff, so here it is… 🙂
The board have a LDO that supplies the SD card with 3.3 volts and there are proper level shifters on the board so it can connect to 5 volt devices. I’ve added a LED that will light up whenever a card is inserted and it will also double as a power indicator.
I only had the SN74LVC2T45 level shifters in the VSSOP model at home and I used the Dangerous Prototypes footprint for them which is the much larger SSOP. But with some careful positioning and extra solder I was able to use them anyways.
Read More: SD Card Breakout for Breadboards