FireBeetle Board-ESP32 has made a special hardware design for Arduino IDE. You can make a download without switching boot-mode manually. It supports Arduino, IDF (linux), micropython etc. Moreover, FireBeetle made a pin mapping for Arduino IDE. It can be configured with Dx transport, compatible with arduino UNO and reduce the entry barrier.Features * Compatible with products in the DFRobot FireBeetle serials * Low-power consumption(the electricity current under ultra-low power is 10μA) * Quick Response(the top frequency is 400KHz) * Cost-effective * Small size, convenient to install Specifications * Working voltage: 3.3V * Input voltage: 3.3V ~ 5V * Support electric current of low power consumption: 10 μA * Support maximum discharge current: 600mA * Support maximum charge current: 500mA * Support USB charging. * Processer: Tensilica LX6 dual core processer (One for high speed connection; one for independent programming). * Frequency: 240MHz * SRAM：520KB * Flash：16Mb * Wi-Fi standard: FCC/CE/TELEC/KCC * Wi-Fi protocol: 802.11 b/g/n/d/e/I/k/r (802.11n, high speed can reach to 150 Mbps), converge A-MPDU and A-MSDU, supporting 0.4us protecting interval. * Frequency range: 2.4~2.5 GHz * Bluetooth protocol: Comply with BR/EDR/BLE standard of Bluetooth v4.2. * Bluetooth audio: the current under low power consumption of CVSD and SBC is 10μA * Working current: 80mA in average * Frequency range: 2.4~2.5GHz * Support one-key downloading. * Support micropython. * On-chip clock: 40MHz crystal and 32.768 KHz crystal. * Digital I/O: 10 (default setting of arduino) * Simulative input: 5(default setting of arduino) * SPI: 1 (default setting of arduino) * I2C: 1 (default setting of arduino) * I2S: 1 (default setting of arduino) * LEDBUILTIN：D9 * Interface: FireBeetle series compatible * Working temperature: -40℃~+85℃ * Dimension: 29 × 58(mm)/1.142 x 2.283(inches) * The dimension of mounting hole: inner diameter 3.1mm; outside diameter 6mm. Documents * Product Wiki * More https://elecena.pl/product/27743085/dfrobot-firebeetle-esp32-iot-microcontroller-supports-wi-fi-amp-bluetooth 2025-01-23 https://elecena.pl/product/27743085/dfrobot-firebeetle-esp32-iot-microcontroller-supports-wi-fi-amp-bluetooth 2026-02-23 https://elecena.pl/product/27743085/dfrobot-firebeetle-esp32-iot-microcontroller-supports-wi-fi-amp-bluetooth 2026-03-05 https://elecena.pl/product/27743085/dfrobot-firebeetle-esp32-iot-microcontroller-supports-wi-fi-amp-bluetooth 2026-03-14 https://elecena.pl/product/27743085/dfrobot-firebeetle-esp32-iot-microcontroller-supports-wi-fi-amp-bluetooth 2026-03-19 https://elecena.pl/product/27743085/dfrobot-firebeetle-esp32-iot-microcontroller-supports-wi-fi-amp-bluetooth 2026-04-12