Example ArduinoUNO Level Conversion
This tutorial demonstrates the 5V to 3.3V IO level conversion on the Arduino UNO.
Hardware Preparation
- DFRduino UNO R3 (or similar) x 1
- 8-Bit Level Translator x1
Connection Diagram
As shown in the figure below (here we use Arduino UNO port 2, ~ 3, 4, ~ 5, ~ 6, 7, 8, ~ 9 I/O for demonstration.)
Port A voltage: 1.2V ~ 3.6V; Port B voltage 1.65V ~ 5.5V (VCCA≤VCCB)
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