Crowduino Uno-SD V1.5

The Crowduino Uno-SD is a development board based on and fully compatible with the Arduino UNO.

Compared to the original Arduino UNO we’ve changed a few things:

• We moved the reset button to the left side. It’s a small change that makes a big difference.
• We’ve updated the power circuitry to have a working voltage of +5v or +3.3V. There is no more level conversion for the thousands of +3.3V sensors on the market.
• We’ve reduced the connector to a mini USB to avoid clearance issues and interference with shields.
• We’ve added an on-board SD card slot for data logging.