# Can I use an ESP-01 to add Wi-Fi to my Arduino UNO? What setup or firmware is required?

**URL:** <https://forum.arduino.cc/t/can-i-use-an-esp-01-to-add-wi-fi-to-my-arduino-uno-what-setup-or-firmware-is-required/1416656>\
**Category:** Sensors\
**Created:** [November 27, 2025, 11:37am UTC](https://forum.arduino.cc/t/can-i-use-an-esp-01-to-add-wi-fi-to-my-arduino-uno-what-setup-or-firmware-is-required/1416656 "2025-11-27T11:37:43Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![Wawa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/wawa/32/1211303_2.png) [@Wawa](https://forum.arduino.cc/u/Wawa)\
**Post date:** [November 29, 2025, 4:42am UTC](https://forum.arduino.cc/t/can-i-use-an-esp-01-to-add-wi-fi-to-my-arduino-uno-what-setup-or-firmware-is-required/1416656/11 "2025-11-29T04:42:40Z")

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Look at **[this recent OLED clock thread](https://forum.arduino.cc/t/help-on-an-esp32-c3-super-mini-project-clock/1409802/17)**.  
Learning how to not do things serves no purpose.  
I don't do difficult.  
Good luck.  
Leo..

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