Refer to the ESP32 IDF case "mqtt/tcp" (..\esp-idf-v4.4\examples\protocols\mqtt\tcp) to introduce the MQTT Client function, so that the Kaluga board can connect to OneNET (I use the old version of MQT
After years of preparation, the launch of 3G mobile phones is on the agenda. The design of 3G TD-SCDMA and WCDMA mobile phones is complex, and the partitioning problem poses a challenge to existing ba
Wireless transmission has many advantages over wired transmission. Perhaps most importantly, it is more flexible. Wireless signals can be sent from one transmitter to many receivers without the need f