Some survey and research notes.
It is caused by Arduino Uno’s high baud error at 115200 baud. Just change baud setting of both sides to one of 9600, 19200 or 38400.
記錄一下玩 LoRa 的東西。技術規範、法規、廠商、軟體、韌體、硬體等等。依據玩耍過程不定時更新。
QGIS is a cross-platform free and open-source desktop geographic information system (GIS) application. Although being cross-platform, level of official support varies from one platform to another. For the highest level of official support, I will recommend Ubuntu for building QGIS application environment.