Exploring HLK-RM04 Serial-to-WiFi Module

HLK-RM04 is a low-cost UART-ETH-WIFI module developed by Shenzhen Hi-Link Electronic co., Ltd with built-in TCP / IP protocol stack. In this article, Ray shares his first experience experimenting with this module and explores its Serial-to-WiFi capability using Arduino.

HLK-RM04 Serial-to-WiFi Module

HLK-RM04 Serial-to-WiFi Module

 

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