ThinkBoard LoRa Node development board based on ESP32 (reference solution)

This is a development board based on ESP32, with built-in HopeRF LoRa RFM95 915MHz chip, BME280 sensor, RGB LED WS2812B and Li-ion/Po battery charger. This board is suitable for your terminal device IoT application. Attachments: PCB, schematics, 3D files, etc. Specifications: MCU: ESP32 WROOM Dual – Core 4MB SPI Flash Size: 62mm x 38mm Connectors: 1x15-pin and 1x17-pin, 2.54mm pitch and castellated holes GPIO: 26 pin GPIO @3v3 Logic Levels: 2 x UART, 2 x SPI, 1 x I2C, 16 x 12 bits ADC, 2 x 8 bits DAC, 10 x Touch Capacitive, 16 x PWM output channels USB to UART: Silicon Labs CP2104 USB – to – UART Bridge Controller Connectivity: LoRa RFM95W 915MHz, Wi-Fi, Bluetooth Built-in Sensors: BME280 Digital Humidity, Pressure and Temperature Sensor @0x76 address Built-in LEDs: 3 single-color LED indicators, 1 single-color built-in LED connected to GPIO2, 1 RGB LED WS2812 connected to GPIO33 Power supply: AP2112K 3.3V LDO 600mA regulator, USB or battery powered Vin: 6.5V max. / 5V typ. / 4.2V min. Battery charger: MCP73831 single cell Li-Ion, Li-Polymer battery charger Connectors: USB Micro B, U.FL antenna connector