Fig. 6From: Proposal for a layer-based IoT construction method and its implementation and evaluation on a rolling stand-up walkerA PCB appearance and block diagram a A PCB design and development to modularize the measurement sensor system -in the walker, it is used universally for both the Modules A and B, b PCB circuit block diagram in which an ESP32 microcomputer was used -it has Wi-Fi and Bluetooth communication functions, an AD converter, GPIO, and other functionsBack to article page