SPECIFICATIONS

4pcs/lot LoRa32u4 II Development Board 868MHz 915MHz Lora Module IOT SX1276 HPD13 Wifi Transceiver Module Antenna JST Connector

Description:
LoRa32u4 II is a light and low consumption board based on the Atmega32u4 and HPD13 868MHz LoRA module and an USB battery charging circuit. Ideal for creating long range wireless networks that can exceed 2.4 GHz 802.15.4 and similar, it is more flexible than Blue-tooth LE, does not require high power unlike WiFi and offers long range.
The ATmega32u4 is clocked at 8 MHz and 3.3 V. This chip has 32 K of flash, 2 K of RAM and built-in USB to Serial communication, debugging and programming capabilities without the need for an external FTDI chip, it can also act as an HID device (mouse, keyboard, USB MIDI device, etc).
This board is also equipped with a LiPo and Liion charging circuit and a standard battery interface. It is fully compatible with Arduino. A white user led is tied to pin 13. An orange LED is used for charging status.
HPD13 wireless module, using high-performance, highly integrated RF transceiver chip SX1276 design. Advanced LoRaTM spread spectrum communication technology to ensure that the module communication distance and anti-jamming capability greatly improved, and also achieved a very low current consumption. In the LoRaTM mode, the HPD13 provides higher reception sensitivity performance, more robust anti-jamming capability, and improved communication distance and reliability compared to the same transmit and receive modules on the market. In normal (G) FSK mode, it also provides industry-specific receiver sensitivity, as well as very high communication rates.
ATmega32u4 @ 8MHz with 3.3V logic/power
3.3V regulator with 500mA peak current output
USB native support, comes with USB bootloader and serial port debugging
Built in 100mA lipoly charger with charging status indicator LED
Reset button

HPD13:
Receive current: 10 ~ 14mA
Interface Type: SPI
Operating temperature: -40 ° C to + 85 ° C
Digital RSSI function
Automatic frequency correction
Automatic gain control
Radio wake-up function
Low voltage detection and temperature sensor
Fast wakeup with frequency hopping
Highly configurable packet handlers

Document link:
http://www.diymalls.com/files/DIY0050-DIY0051-LORA32U4.zip
https://drive.google.com/open?id=0B8DSGdAr8_31RkQ0UGo2Nzh1YXM