RF Ĩ SX1278 Àº ÁÖ·Î LoRaTM ¿ø°Ý ¸ðµ©À» »ç¿ëÇÏ¿© ³ôÀº ¾ÈƼ °£¼·À¸·Î ÃÊÀå°Å¸® È®»ê ½ºÆåÆ®·³ Åë½ÅÀ» ¼öÇàÇÏ°í Àü·ù ¼Òºñ¸¦ ÃÖ¼ÒÈÇÕ´Ï´Ù. SEMTECHÀÇ Æ¯Çã¹ÞÀº LoRaTM º¯Á¶ ±â¼ú·Î SX1278 Àº 148dBm ÀÌ»ó, + 18dBm Ãâ·Â, ±ä Àü¼Û °Å¸® ¹× ³ôÀº ½Å·Ú¼ºÀÇ ³ôÀº °¨µµ¸¦ °¡Áö°í ÀÖ½À´Ï´Ù. µ¿½Ã¿¡ ÀüÅëÀûÀÎ º¯Á¶ ±â¼ú°ú ºñ±³ÇÏ¿© LoRaTM º¯Á¶ ±â¼úÀº ¾ÈƼ ºí·ÎÅ· ¹× ¼±Åÿ¡¼ ºÐ¸íÇÑ ÀÌÁ¡À» °¡Áö°í ÀÖ½À´Ï´Ù. ÀüÅëÀûÀÎ ¼³°è ¹æ½ÄÀÌ °Å¸®, °£¼· ¹æÁö ¹× Àü·Â ¼Òºñ¸¦ µ¿½Ã¿¡ °í·ÁÇÒ ¼ö¾ø´Â ¹®Á¦¸¦ ÇØ°áÇÕ´Ï´Ù. Ra-01, Ra-02 ÀÛµ¿ ÁÖÆļö´Â 410-525MHz
Parameter Performance:
Ultra-long communication distance 15KM
Constant RF power output with +20dBm-100mW voltage change
High sensitivity: as low as -148dBm
Half-duplex SPI communication
Programmable bit rate up to 300kbps
Support for preamble detection
Support FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation
127dB RSSI dynamic range
Automatic RF signal detection, CAD mode and ultra-high speed AFC
Packet engine with CRC up to 256 bytes
Small double-row stamp hole patch package with shield case
Spring antenna (Ra-01) or IPEX external antenna (Ra-02)
Spectrum range 410-525MHz
Maximum transmit power 18 ± 1 dBm
433MHz average operating current TX: 93mA RX: 12.15mA Standby: 1.6mA
470MHz average operating current TX: 97mA RX: 12.15mA Standby: 1.5mA
Power supply range 2.5 ~ 3.7V, typical value 3.3V
Working temperature -30 ° C ~ 85 ° C
Storage environment -40°C ~ 90°C, <90%RH
Click "Open Program File", select the Hex firmware of the MCU, and note that the IRC frequency when the user program is running is 22.1184MHz;
After the download is complete, reset the test board again. Plug in the LoRa adapter board. This test requires two test boards, one for transmission and the other for reception. When the module is powered on without any operation, the LoRa module enters the receive mode. When one of the test boards presses one of the buttons, the module enters the send mode, the light on the right side of the module lights up, and the other module is in the receive module. If data is received, the left light flashes.