{"id":812,"date":"2026-06-12T15:40:42","date_gmt":"2026-06-12T07:40:42","guid":{"rendered":"https:\/\/projectleon.net\/make\/blog\/lora-sx1278-introduction-ugv-command-2km-farsi\/"},"modified":"2026-06-12T20:35:22","modified_gmt":"2026-06-12T12:35:22","slug":"lora-sx1278-introduction-ugv-command-2km-farsi","status":"publish","type":"post","link":"https:\/\/projectleon.net\/make\/blog\/lora-sx1278-introduction-ugv-command-2km-farsi\/","title":{"rendered":"\u0622\u0634\u0646\u0627\u06cc\u06cc \u0628\u0627 LoRa SX1278 \u2014 \u0627\u0631\u0633\u0627\u0644 \u062f\u0633\u062a\u0648\u0631 \u0628\u0647 UGV \u0627\u0632 \u06f2 \u06a9\u06cc\u0644\u0648\u0645\u062a\u0631 (\u0641\u0627\u0631\u0633\u06cc)"},"content":{"rendered":"
\n\u0645\u0627\u0698\u0648\u0644 LoRa SX1278 Ra-02 \u0622\u0631\u062f\u0648\u06cc\u0646\u0648 UGV\n<\/div>\n
\n

LoRa \u0686\u06cc\u0633\u062a \u2014 \u0641\u0646\u0627\u0648\u0631\u06cc \u0627\u0645\u0648\u0627\u062c \u0631\u0627\u062f\u06cc\u0648\u06cc\u06cc \u0628\u0631\u062f \u0628\u0644\u0646\u062f<\/h2>\n

LoRa<\/strong> (Long Range) \u06cc\u06a9 \u0645\u062f\u0648\u0644\u0627\u0633\u06cc\u0648\u0646 \u0631\u0627\u062f\u06cc\u0648\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u062a\u0648\u0633\u0637 Semtech \u062a\u0648\u0633\u0639\u0647 \u06cc\u0627\u0641\u062a\u0647. \u062f\u0631 \u0628\u0627\u0646\u062f Sub-GHz (\u06f4\u06f3\u06f3\u060c \u06f8\u06f6\u06f8 \u06cc\u0627 \u06f9\u06f1\u06f5 MHz) \u06a9\u0627\u0631 \u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u0628\u0627 \u062a\u0648\u0627\u0646 \u06f1\u06f0\u06f0mW \u0628\u0631\u062f \u06f2\u2013\u06f1\u06f5km \u062f\u0631 \u0641\u0636\u0627\u06cc \u0628\u0627\u0632 \u062f\u0627\u0631\u062f. \u0631\u0645\u0632 \u0645\u0648\u0641\u0642\u06cc\u062a\u0634 \u062a\u06a9\u0646\u06cc\u06a9 CSS (Chirp Spread Spectrum) \u0627\u0633\u062a \u06a9\u0647 \u0633\u06cc\u06af\u0646\u0627\u0644 \u0631\u0627 \u062f\u0631 \u0637\u06cc\u0641 \u067e\u062e\u0634 \u0645\u06cc\u200c\u06a9\u0646\u062f \u2014 \u0645\u0642\u0627\u0648\u0645 \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u0646\u0648\u06cc\u0632\u060c \u062a\u062f\u0627\u062e\u0644 \u0648 \u0645\u062d\u0648 \u0686\u0646\u062f \u0645\u0633\u06cc\u0631\u06cc.<\/p>\n

SX1278<\/strong> \u062a\u0631\u0627\u0634\u0647 LoRa \u0633\u0627\u062e\u062a Semtech \u0627\u0633\u062a. \u0645\u0627\u0698\u0648\u0644 Ra-02<\/strong> (EBYTE \u06cc\u0627 Ai-Thinker) \u0622\u0646 \u0631\u0627 \u0628\u0627 \u0622\u0646\u062a\u0646 \u067e\u06cc\u0632\u0648 \u0648 \u06a9\u0627\u0646\u06a9\u062a\u0648\u0631 SMA \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc\u200c\u062f\u0647\u062f. \u0628\u0627 \u0622\u0631\u062f\u0648\u06cc\u0646\u0648 \u0627\u0632 \u0637\u0631\u06cc\u0642 SPI \u0627\u0631\u062a\u0628\u0627\u0637 \u0628\u0631\u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n

\u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f\u06cc: SF (Spreading Factor)<\/strong> \u06f7\u2013\u06f1\u06f2: \u0628\u0627\u0644\u0627\u062a\u0631 = \u0628\u0631\u062f \u0628\u06cc\u0634\u062a\u0631\u060c \u0633\u0631\u0639\u062a \u06a9\u0645\u062a\u0631. BW (Bandwidth)<\/strong> \u06f1\u06f2\u06f5\/\u06f2\u06f5\u06f0\/\u06f5\u06f0\u06f0kHz: \u0628\u0627\u0644\u0627\u062a\u0631 = \u0633\u0631\u0639\u062a \u0628\u06cc\u0634\u062a\u0631\u060c \u0628\u0631\u062f \u06a9\u0645\u062a\u0631. CR (Coding Rate)<\/strong> 4\/5 \u062a\u0627 4\/8: \u0628\u0627\u0644\u0627\u062a\u0631 = \u0645\u0642\u0627\u0648\u0645\u062a \u0628\u06cc\u0634\u062a\u0631.<\/p>\n<\/div>\n

\u0645\u0642\u0627\u06cc\u0633\u0647 \u062a\u0646\u0638\u06cc\u0645\u0627\u062a LoRa \u0628\u0631\u0627\u06cc UGV<\/h2>\n\n\n\n\n\n\n\n
SF<\/th>\nBW<\/th>\n\u0628\u0631\u062f<\/th>\n\u062a\u0623\u062e\u06cc\u0631<\/th>\n\u06a9\u0627\u0631\u0628\u0631\u062f<\/th>\n<\/tr>\n<\/thead>\n
SF7<\/td>\n125kHz<\/td>\n~\u06f2km<\/td>\n~\u06f5\u06f0ms<\/td>\n\u06a9\u0646\u062a\u0631\u0644 RT UGV<\/td>\n<\/tr>\n
SF9<\/td>\n125kHz<\/td>\n~\u06f5km<\/td>\n~\u06f2\u06f0\u06f0ms<\/td>\n\u062a\u0644\u0647\u200c\u0645\u062a\u0631\u06cc GPS<\/td>\n<\/tr>\n
SF12<\/td>\n125kHz<\/td>\n~\u06f1\u06f5km<\/td>\n~\u06f2s<\/td>\n\u062f\u06cc\u062a\u0627\u06cc \u062d\u0633\u06af\u0631 \u06a9\u0646\u062f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0627\u062a\u0635\u0627\u0644 Ra-02 \u0628\u0647 Arduino<\/h2>\n\n\n\n\n\n\n\n\n\n
Ra-02<\/th>\nArduino Uno<\/th>\n\u0646\u06a9\u062a\u0647<\/th>\n<\/tr>\n<\/thead>\n
VCC<\/td>\n3.3V<\/td>\n\u0647\u0631\u06af\u0632 5V \u0646\u062f\u0647\u06cc\u062f<\/td>\n<\/tr>\n
SCK\/MOSI\/MISO<\/td>\nD13\/D11\/D12<\/td>\nSPI Hardware<\/td>\n<\/tr>\n
NSS<\/td>\nD10<\/td>\nChip Select<\/td>\n<\/tr>\n
RST<\/td>\nD9<\/td>\nReset<\/td>\n<\/tr>\n
DIO0<\/td>\nD2<\/td>\nInterrupt (TX done \/ RX ready)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u06a9\u062f \u0627\u0631\u062a\u0628\u0627\u0637 \u062f\u0648\u0637\u0631\u0641\u0647<\/h2>\n
#include <SPI.h>\n#include <LoRa.h>\n\nbool isTX = true;  \/\/ true = \u0641\u0631\u0633\u062a\u0646\u062f\u0647\u060c false = \u06af\u06cc\u0631\u0646\u062f\u0647\nint counter = 0;\n\nvoid setup(){\n  Serial.begin(115200);\n  if(!LoRa.begin(433E6)){\n    Serial.println(\"LoRa init failed!\"); while(1);\n  }\n  LoRa.setSpreadingFactor(7);\n  LoRa.setSignalBandwidth(125E3);\n  LoRa.setCodingRate4(5);\n  LoRa.setTxPower(17);  \/\/ 17 dBm = ~50mW\n  Serial.println(\"LoRa OK\");\n}\n\nvoid loop(){\n  if(isTX){\n    LoRa.beginPacket();\n    LoRa.print(\"CMD:\"); LoRa.print(counter++);\n    LoRa.endPacket();\n    Serial.print(\"Sent #\"); Serial.println(counter);\n    delay(500);\n  } else {\n    int pkt = LoRa.parsePacket();\n    if(pkt){\n      String recv = \"\";\n      while(LoRa.available()) recv += (char)LoRa.read();\n      int rssi = LoRa.packetRssi();\n      float snr  = LoRa.packetSnr();\n      Serial.print(\"Recv: \"); Serial.print(recv);\n      Serial.print(\"  RSSI:\"); Serial.print(rssi);\n      Serial.print(\"dBm  SNR:\"); Serial.println(snr);\n    }\n  }\n}<\/code><\/pre>\n
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