Main Features:<br />Design specially for Arduino<br />Lead out all digital IO port and analog IO port， each one with standard positive and negative power interface<br />Lead out the I2C interface of mainboard for convenient connection<br />Increase DC interface<br />Available board color: Blue， Red (Random Color)<br />Frequently Asked Questions: <br />Q1. Why are these called "Arduino Compatible"? <br />A1. The Arduino group demanded us to remove their logos and rename these products so that they do not lead customers to believe they are the same units sold by Arduino<br />Q2. Are these 100% compatible with the "normal" Arduino's? <br />A2. Yes， they really are completely compatible with "normal" Arduino's. Build quality looks the same and everything (studio， library， tools， etc) just works<br /><br />    Specifications<br />Electronic Components<br />	 Architecture: Arduino                                                	<br />Weight and Size<br />	 Product Weight: 20 g                                                  <br />                        Package Weight: 0.070 kg                                                  <br />                        Product Size(L x W x H): 5.7 x 5.3 x 0.9 cm/ 2.3 x 2.1 x 0.4 inches                                                  <br />                        Package Size(L x W x H): 8.0 x 7.0 x 2.0 cm                                                	<br />Package Contents<br />	 Package Contents: 1 x Expansion Board                                                	<br /><br /><br /><br />                                   Product Color Disclaimer:<br />The item color is subject to stock availability， we reserve the right to substitute for another color.<br /><br />                                                <br />