Help with Esp32 Days Since Last Incident Board

Full 2xAA is ~ 3.2V, but the ESP32 would like 3.3V --> use a stepup/stepdown e.g. Pololu 3.3V Step-Up Step-Down Spannungsregler S7V8F3 - Eckstein Shop, 9,95 € - you'll find a lot around.