This article presents a development board designed for prototyping, development and research of different wireless technologies. It integrates six RF communication options: Wi-Fi, ESP-NOW, BLE, LoRa, and two proprietary protocols in the 2.4-GHz and 433-MHz ranges. To make the board even more versatile, a GPS module, an SD card socket and expansion connectors for sensors and the like were integrated, too.

Why a Wireless Dev Platform?

When working with wireless systems, most design decisions are made long before the final product exists. Range, reliability, latency, and coexistence with other radios are often estimated from datasheets or reference designs. In practice, these parameters depend heavily on layout, antennas, firmware timing, and real-world environments.

The motivation behind this project was twofold. First, I needed a dedicated LoRa testing platform to evaluate range and packet reliability under different conditions. Second, I wanted a single development board that...