ESP-NOW Based Decentralized Low Cost Voice Communication Systems For Buildings

This paper presents an indoor voice communication system based on ESP-NOW, a peer to peer network protocol powered by Espressif. The system is implemented on a System on Chip (SoC) ESP32 along with the modified firmware built with Espressif development platform (ESP-IDF). With such hardware and firmware, the targeted application of the network is supporting a quick response communication in short range areas including factories, hospitals or offices. In order to minimize the cost and power consumption the final product must undergo a trade off in range but still satisfy a low latency communication.