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Geeetech Iduino yun cloud Expansion Board Module
Iduino Yun cloud Iduino Yun cloud is an ideal IoT device for Internet of Things projects. It is a compatible / replacement product for Arduino Yun. It works with Arduino IDE with version higher than 1.5.4. The Iduino Yun cloud is a microcontroller board based on the ATmega32u4 and the Atheros AR9331. The Atheros processor supports a Linux distribution based on OpenWrt named OpenWrt-Yun. The board has built-in Ethernet and WiFi support£¬ a USB-A port£¬ micro-SD card slot£¬ 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs)£¬ a 16 MHz crystal oscillator£¬ a micro USB connection£¬ an ICSP header£¬ and a 3 reset buttons. The Iduino Yun cloud is similar to the Arduino Leonardo in that the ATmega32u4 has built-in USB communication£¬ eliminating the need for a secondary processor. This allows the Yun to appear to a connected computer as a mouse and keyboard£¬ in addition to a virtual (CDC) serial / COM port. Features Open source Linux (OpenWrt) onboard Compatible with Arduino IDE 1.5.4 or later£¬ user can program£¬ debug or upload sketches to the Arduino board via the Arduino IDE. Managed by Web GUI£¬ SSH via LAN or WiFi Software upgradable via network Built-in web server Supports internet connection via LAN port£¬ WiFi or 3G dongle. Supports USB flash to provide storage for Arduino projects. Failsafe design provides robust system. Specifications AVR Arduino microcontroller Microcontroller ATmega32U4 Operating Voltage 5V Input Voltage 5 Digital I/O Pins 20 PWM Channels 7 Analog Input Pins 12 DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA Flash Memory 32 KB (of which 4 KB used by bootloader) SRAM 2.5 KB EEPROM 1 KB Clock Speed 16 MHz Linux Microprocessor Processor Atheros AR9331 Architecture MIPS @400MHz Operating Voltage 3.3V Ethernet IEEE 802.3 10/100Mbit/s WiFi IEEE 802.11b/g/n USB Type-A 2.0 Host Card Reader Micro-SD only RAM 64 MB DDR2 Flash Memory 16 MB WiFi Specification WiFi: Support 150M 2.4Ghz WiFi£¬ 802.11 b/g/n Frequency range: 2.4~2.4835GHz Modulation: BPSK£¬ QPSK£¬ CCK and OFDM (BPSK/QPSK/16-QAM/ 64-QAM) Sensitivity @PER: 135M : -65dBm@10%PER; 65M : -65dBm@10%PER; 54M : -68dBm@10%PER; 11M: -84dBm@8% PER; 6M: -88dBm@10% PER; 1M: -90dBm@8% PER Typical Distance: Indoor: 60m (max); Outdoor 150m (max) (with 2 dBi antenna) RF Power: 11n: 13dBm; 11g: 13-15dBm£¬ 11b: 16-18dBm£¬ Connector: I-PEX connector. USB Ports The Iduino Yun cloud has two USB connectors for different purpose: USB Type A Female: Connect to the Linux part. it is a USB host port. User can use it to connect to USB flash£¬ 3G dongle etc. USB micro A Female: Connect to Atmega32u4£¬ use can use it to upload sketch to Atmega32u4 or get debug info from 32u4. Buttons: WLAN_RESET: Reset Linux part. 32u4_RSET: Reboot Atmega32u4 YUN_RST: Reboot Linux part