I often use sdCard adapters on Arduino (UNO, Nano, and Atmel chips on a PCB or Breadboard). I just finished an indoor lap counter (to count laps I jog in the house 14 laps = 1/4 Mile… LOL)
A summary of what I’ve learned: Using something not specific to a board/device has worked the best for me for these reasons:
• Can use different pins
• Vin = 4.5 to 5.5
• They have their own 3.3 Voltage regulator
• They work with the varioius Arduino sdCard libraries
• 5 units for about $8
These are one’s I buy from Amazon: SenMod sdHC Adapter
Two example projects (one has an Audio Amplifier on the PCB)
