Dragino HE is a minimal system which installed with OpenWrt Linux system and support 150M 2.4G WiFi. It is compatible with 802.11b/g/n. HE has rich interface such as Ethernet, USB, UART and plenty of GPIOs. HE use small outline package, it is used widely in WiFi solutions.

HÉ means “core” in Chinese. Intend of HÉ module is to be used as the core of the IoT, WiFi solution.

HE is based on Open Source OpenWrt system. User is free to modify the software for their applications. 

Applications: 

• Internet of Things
• Voice over IP
• Mesh WiFi
• 3G/4G router
• Industrial Control

specifications

• CPU: ATHEROS AR9331 chipset, which integrates MIPS 24Kc processor, CPU 400MHz, Switch (MAC, PHY) and integrates with MAC, RF, PA and LNA for WiFi. 
• RAM : 64MB;
• Flash : 16MB
• Interfaces: 2 x RJ45, 1 x USB Host, 1 x UART, 14 multiplex GPIOs
• OS: Open Source OpenWrt 
• Power: 3.3v power input
• 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. Provide Optional ANT pin out for SMT

Datasheet

Gerenal Reference Design:  Start Kit

Arduino Yun Reference Design: Yun Shield

Source Code: Mesh IoT Firmware Source

Source Code: Arduino Yun Source Code

FCC / CE / RoHS Certificate: Certificate

Wiki Page link: HE Wiki Page

Video 1: Use HE to build Arduino Yun solution.