Heltec boards
1 Heltec development board — pinouts, specs, and datasheets.
Heltec · ESP32-S3 + SX1262
Heltec's WiFi LoRa 32 V3 pairs an ESP32-S3 with a Semtech SX1262 LoRa radio and a 0.96" SSD1306 OLED. The fixed onboard connections (LoRa SPI, OLED I2C, Vext, LED, button) are below; remaining GPIOs are broken out to the side headers. 3.3V logic.