This page tries to document my experiments using accelerometers

ADXL335

Board: GY-61.

    ADXL335 3-axis Accelerometer
    On-board 3.3V Voltage Regulator
    Analog voltage output centered at 1.65V
    Suitable for connection to 5V and 3.3V systems

    Supply Voltage: 3V - 5V
    Full scale range: +/-3g
    Sensitivity: 300mV/g (Typ)

MPU-9250

Board: Grove - IMU 10DOF v1.1

https://wiki.seeedstudio.com/Grove-IMU_10DOF/

MPU-9250 addr: 0x68
BMP180 addr: 0x77

This board has 5V -> 3V3 level shifter