I got these dev boards, quite pleased for $20USD each. The display is great but the battery does not seem to last very long. https://www.banggood.com/2Pcs-LIL

I got these dev boards, quite pleased for $20USD each. The display is great but the battery does not seem to last very long. https://www.banggood.com/2Pcs-LILYGO-TTGO-868915MHz-SX1276-ESP32-LoRa-0_96-Inch-Blue-OLED-Display-bluetooth-WIFI-Module-p-1303190.html https://www.banggood.com/2Pcs-LILYGO-TTGO-868915MHz-SX1276-E... Make sure you get the right frequency for your country to be legal to transmit. 868/915MHz for usa, 433 for euro.