2014 The latest version Funduino UNO ATmega328P development board. Upgraded version! <br />Operating voltage: 3.3V / 5V <br />Input voltage: no external power supply needed when connected to USB or external 7V-20V<br />Output voltage: 5V DC output; 3.3V output and external power input <br />Microprocessor ATmega328P <br />Clock frequency: 16MHZ <br />Digital I / O port: 14 (4 PM outputs) <br />Analog inputs: 6<br />DC current I / O: 40MA <br />DC current 3.3V Port : 50MA <br />TW interface (SDA A4 and SCL A5): supports the communication interface (I2C bus compatible) <br />6 channel analog inputs A0 to A5: each channel with 10-bit resolution, the default input signal is from 0 to 5V, etc.<br />LED (number 13) output high is to light up <br />Working clock: 16MHz<br />SRAM: 2KB (ATmega328P)<br />USB interface protocol and power supply: supported <br />ISP download function: supported <br />Product size: 68 x 54 x 12 mm  <br /><br />1 x ATmega328P Development Board <br />1 x mini USB Cable<br /><img src="//agdetail.image-gmkt.com/m430/561/584/560584561/img/agdetail.image-gmkt.com/561/584/560584561/img/img6.eachbuyer.com/x9/p100/eb3745_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/561/584/560584561/img/agdetail.image-gmkt.com/561/584/560584561/img/img6.eachbuyer.com/x9/p100/eb3745_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/561/584/560584561/img/agdetail.image-gmkt.com/561/584/560584561/img/img6.eachbuyer.com/x9/p100/eb3745_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/561/584/560584561/img/agdetail.image-gmkt.com/561/584/560584561/img/img6.eachbuyer.com/x9/p100/eb3745_4.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/561/584/560584561/img/agdetail.image-gmkt.com/561/584/560584561/img/img6.eachbuyer.com/x9/p100/eb3745_5.jpg" />