Frequently Asked Questions


This page contains the most frequently questions from user. If this page’s detail can’t solve your problem, you can also talk in our forum:


Can’t Download Firmware

  • Use a better USB cable, or change a USB socket;

  • Check and make sure the CP210x drive had been correctly installed, users can refer to this document: Establish Serial Connection;

  • Press “PRG” button before upload.

Node to node communication

On the premise of no hardware problem, LoRa nodes can communicate with each other node-to-node. The key to success node-to-node communication need make sure the following 7 points the same:

  1. The same sending and listening frequency: LoRa.setFrequency(frequency);

  2. The same bandwidth: LoRa.setSignalBandwidth(signalBandwidth);

  3. The same coding rate: LoRa.setCodingRate4(codingRateDenominator);

  4. The same preamble length: LoRa.setPreambleLength(preambleLength);

  5. The same sync word: LoRa.setSyncWord(syncWord);

  6. The status of LORA_IQ_INVERSION is the same;

  7. the same SPREADING FACTOR;

Know more information about LoRa node-to-node communication, please refer to LoRa basic library APIs:


The device uses the firmware of Wireless Stick Lite, it does not have a display function.