Arduino Uno with 4 MPU 6050 accelerometers

Projects Discussion and Showcase Robotics
1

Hi,

I'm new to Arduino and not very experienced so I apologize if this sounds like basic question. I want to hook up Arduino Uno board with 4 MPU 6050 accelerometers. So the accelerometers will each give the data/value of an impact force and send that data to Arduino UNO to be stored into an SD card and will also transmit a Bluetooth alert when a particular impact force is detected from the accelerometers.

My question is, is it possible to use 4 MPU 6050 accelerometers with the Arduino Uno board? Because I did some search and could only find resources on how to use only up to 2 accelerometers. If possible, could you give me some advice on how to do it in the Arduino code and would I be needed any additional devices such as multiplexor, decoder etc..? Will this be on the i2c, analog or digital?

Thanks in advance.

2

My reading of the info about this breakout board is that it has 2 selectable I2C addresses, so typically only 2 can be used.
But this page shows a trick that might let you use more.

3

Also, any advice on how to work with realtime data on the accelerometers to be transmitted into the Uno and use the Uno to send alerts to a Bluetooth device?

4

Yes.
Do it in small pieces.
Get one accelerometer to work, showing the values to the serial monitor.
Then get 2 working.
Then try the trick to get more than 2 working.

Then set that all aside and work on the bluetooth sketch.
Then add back in the accelerometers.