This is an IoT agricultural sensor node featuring an NPK soil sensor and a fully self-sufficient solar power system: MPPT charging, a boost converter, and lithium-ion battery management. Built on the ESP32-WROOM-2, chosen because the nodes communicate over ESPNOW and Espressif chips come with Wi-Fi and Bluetooth baked in.

Developed under Lwera Electronics and Semiconductors in collaboration with the Uganda Institute of Information and Communication Technology (UICT).