# Connect a nodemcu esp8266 to an arduino uno

**URL:** <https://forum.arduino.cc/t/connect-a-nodemcu-esp8266-to-an-arduino-uno/1174054>\
**Category:** Networking, Protocols, and Devices\
**Created:** [October 1, 2023, 4:51pm UTC](https://forum.arduino.cc/t/connect-a-nodemcu-esp8266-to-an-arduino-uno/1174054 "2023-10-01T16:51:22Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![Nick\_Pyner](https://avatars.discourse-cdn.com/v4/letter/n/e8c25b/32.png) [@Nick\_Pyner](https://forum.arduino.cc/u/Nick_Pyner)\
**Post date:** [October 3, 2023, 12:31am UTC](https://forum.arduino.cc/t/connect-a-nodemcu-esp8266-to-an-arduino-uno/1174054/21 "2023-10-03T00:31:03Z")

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I don't want to get too involved in this but your wiring looks kosher to me and I think that's a lot more than can be said for the link in post #15. Shouldn't an alarm be raised about that?  
I understand ESP is strictly 3.3v

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**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\
**Post date:** [March 31, 2024, 12:31am UTC](https://forum.arduino.cc/t/connect-a-nodemcu-esp8266-to-an-arduino-uno/1174054/22 "2024-03-31T00:31:47Z")

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Closed on March 31, 2024, 12:31am UTC

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