The board is equipped with the ESP-WROOM-32 module. This module has golpin headers with a pitch of 2.54mm. The ESP system is dedicated to communication in the Wi-Fi 2.4GHz network and in the Bluetooth 2.4 GHz Dual Mode standard. Its great advantage is compatibility with popular interfaces such as UART, SPI or I2C. Specification: ESP-WROOM-32 system Supply voltage: from 3.3 V to 5 V Flash memory: 512 kb Clock clock: 2.4 GHz WiFi standard: 802.11 b / g / n Bluetooth standard: Bluetooth v4.2 / Bluetooth BLE / Dual Mode Wi-Fi Security: WEP, WPA / WPA2, PSK / Enterprise, AES / SHA2 / Elliptical Curve Cryptography / RSA-4096 Band: 2.412 GHz to 2.484 GHz MicroUSB connector 2 buttons: Enable and Boot Built-in converter USB-UART CP2102, allows communication with the module and its programming via the microUSB connector 38 GPIO pins, including: - 3x UART - 3x SPI - 2x I2C (2x I2S) - 12-channel ADC converter - 2-channel DAC - PWM outputs - SD card interface Goldpin headers, 2.54 mm pitch: for easy plugging into the breadboard Dimensions: 49 x 26 x 13 mm (with connectors) https://elecena.pl/product/22605348/esp-wroom-32-wifi-bluetooth-esp32-nodemcu-module-arduino 2023-02-22 https://elecena.pl/product/22605348/esp-wroom-32-wifi-bluetooth-esp32-nodemcu-module-arduino 2024-12-18 https://elecena.pl/product/22605348/esp-wroom-32-wifi-bluetooth-esp32-nodemcu-module-arduino 2025-10-25 https://elecena.pl/product/22605348/esp-wroom-32-wifi-bluetooth-esp32-nodemcu-module-arduino 2025-10-29