<![CDATA[M5Dial: i2C voltage level, 3.3V or 5V?]]>

<![CDATA[M5Dial: i2C voltage level, 3.3V or 5V?]]>Hi

Does anybody know the voltage level of the I2C interface on Port A of the M5Dial?

I want to connect a M5Dial with I2C with an Arduino Nano ESP32. Both use the ESP32-S3 which is running on 3.3V. But on the Port A connector of the M5Dial there is 5V. So I am confused.

Can I connect both boards directly (i.e. SDA, SCL and GND), or will this damage the Nano ESP32?

Thanks, nalom1

]]>https://community.m5stack.com/topic/7492/m5dial-i2c-voltage-level-3-3v-or-5vRSS for NodeWed, 29 Apr 2026 21:39:10 GMTSat, 12 Apr 2025 08:51:16 GMT60<![CDATA[Reply to M5Dial: i2C voltage level, 3.3V or 5V? on Sat, 19 Apr 2025 15:22:03 GMT]]>@robski Thanks a lot

]]>https://community.m5stack.com/post/28934https://community.m5stack.com/post/28934Sat, 19 Apr 2025 15:22:03 GMT<![CDATA[Reply to M5Dial: i2C voltage level, 3.3V or 5V? on Mon, 14 Apr 2025 07:15:26 GMT]]>@nalom1 this 5v and ground there is to supply sensors/units but voltage levels for gpio are 3.3

]]>https://community.m5stack.com/post/28878https://community.m5stack.com/post/28878Mon, 14 Apr 2025 07:15:26 GMT