Shanghai High-Flying Electronics Technology Co., Ltd, is a high-tech enterprise, specialized in wireless communication, which is releasing its first LoRa Module, Lport-L10, in Q1 2018.
LoRa is one of the LPWAN communication technologies, it is the physical layer of LoRaWAN, which is a MAC protocol for a high capacity long range and Low Power Wide Area Networks (LPWAN) or the wireless modulation utilized to create the long range communication link. LoRaWAN targets the basic needs of IoT such as secure bi-directional communication, mobility and localization services. LoRaWAN is a star network topology where all sensors embedded with LoRa chips send messages to gateways, not to other sensors. Gateways then pass along the messages with cellular, satellite, Ethernet, or Wi-Fi to a network server. At which time, the network server will delete duplicate messages that were sent by multiple gateways. LoRa is based on chirp spread spectrum modulation, which maintains the same low power characteristics as FSK modulation but significantly increases the communication range.
Chirp spread spectrum has been used in military and space communication for decades due to the long communication distances that can be achieved and robustness to interference, but LoRa is the first low cost implementation for commercial usage. LoRa chips transmit in the sub-gigahertz spectrum (109MHz, 433MHz, 868MHz, 915MHz) within the ISM Band, which are worldwide available frequencies that show less interference than others (like the 2.4 GHz range used by Wi-Fi, Bluetooth, and other protocols). At those frequencies, signals penetrate obstacles and travel long distances while drawing relatively little power — ideal for many IoT devices, which are often constrained by battery life.
|Dimension||33x23x3.5 mm||RX sensitivity||-148 dBm Max|
|Power||+3.3V ±10%||TX power||+20 dBm Max|
|Current||130mA Max / 2uA@RTC mode1||RTC||1|
|MCU||32 bit ARM Cortex M0+||ADC||12 channel|