I am planning to use I2C to use a flow rate sensor and pump connected an Arduino Uno. Both pump and sensor have a Vcc of 3.3 V. My main concern is whether I can connect them directly to the SDA/SCL pins of the Arduino or do I need to use a level shifter (5V-3.3V)?]
Pump Datasheet:
[HERE]
(https://www.ttpventus.com/media/pages/downloads/datasheets/39972474d1-1669732362/lee-ventus-smart-pump-module-datasheet.pdf)
Sensor Datasheet:
HERE