A low cost ESP8266 with integrated OLED display. The on-board charging interface allows connection to a battery pack. Can be programmed under Arduino or NodeMCU. Memory: 4MByte Flash Connectivity: WiFi  Chip: ESP8266 I/0: 12 digital pins, IIC, SPI, PWM, 1 AD input Display: OLED 0.91" white, resolution 128X32 Voltage: 3.3V ~ 7V Usual high quality and fast delivery from Germany by buying from AZ-Delivery!   https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2021-04-21 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2021-10-31 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2021-11-01 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2021-11-26 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2021-11-27 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2022-02-23 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2022-02-24 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2022-06-02 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2022-07-31 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2022-08-03 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2022-08-22 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2023-01-19 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2023-02-06 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2023-06-15 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2023-08-09 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2023-10-30 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2023-10-31 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2024-04-09 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2024-04-30 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2024-06-17 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2024-06-18 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2024-09-30 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2024-10-01 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-01-06 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-01-07 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-03-13 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-03-15 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-05-15 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-05-16 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-10-09 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-10-11 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-12-16 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2025-12-18 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2026-02-26 https://elecena.pl/product/17814266/esp8266-microcontroller-with-an-integrated-0-91-oled-display 2026-02-28