AJAnn Jianginnicerf.hashnode.dev·Sep 9, 2025 · 18 min readIntegrating the DMR858M: A Practical Guide to Custom ESP32 Digital Walkie-Talkies1. Introduction: The DMR858M as an Integrated DMR Subsystem In the field of embedded systems development, integrating radio frequency (RF) functionality into a product often involves complex hardware design and tedious protocol stack implementation. ...00