According to the CEO of Espressif, Teo Swee Ann, the I/O pins of the ESP8266 are... | Hacker News

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satoshinm on Dec 26, 2017 | parent | context | favorite | on: ESP 8266 Wi-Fi Repeater with Mesh Networking

According to the CEO of Espressif, Teo Swee Ann, the I/O pins of the ESP8266 are 5V tolerant.

See discussion here: https://hackaday.com/2016/07/28/ask-hackaday-is-the-esp8266-... and official reply on Facebook (of all places): https://www.facebook.com/groups/1499045113679103/permalink/1...

> Teo Swee Ann i can reply officially here: it is 5V tolerant at the IO. while the supply voltage is at 3.3V.

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