Go Down

Topic: MPL115A2 change SPI pin communication (Read 892 times) previous topic - next topic


I got a MPL115A2 adafruit sensor on a Arduino uno r3 board.

I use the <Adafruit_MPL115A2.h> Library.

The SCL and SDA of the MPL115A2 are respectly connected to analog pin 5 and 4 on the arduino.

I also have a XBEE pro 900 module connected to the arduino board.

Question: I want to free the analog pin 5 and 4 on the arduino and put the SPI communication of the MPL115A2 on digital pin 9 and 8 of the arduino.

IF someone can help.....thank a lot to the community for the help....very appreciate....


What makes you think the sensor can be used in SPI mode ?

Why do you want to free pin A4 and A5 ?
Perhaps you could use a mux to be able to select more analog signals.


Excuse I was wrong not SPI but I2C communication and if I could change SCL and SDA (Ana5 and Ana4) on Arduino Uno I'll not have to multiplex.

Thank for the help



On a Arduino boards, the I2C pins are fixed to certain pins, You can not change it.

For the Arduino Uno it is A4 and A5, at the cost of 2 analog inputs.
The Arduino Mega 2560 has 16 analog inputs.
The Arduino Leonardo has 12 analog inputs.

Nick Gammon wrote a page about using a mux.

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131