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I’m using an arduino MKR FOX 1200 and having trouble using the accelerometer. I was using using i2c on arduino uno. What pins should house on MAKE FOX 1200 to use the i2c?
I found that the gains in the library code were off by a factor of 0.1, i.e. 10% of their correct values. I changed them to the following to get approx 1g in the Z axis. So these numbers should give genuine g values for the accelerations.
gains = 0.0376390;
gains = 0.0376009;
gains = 0.0349265;
These gains are located in SparkFun_ADXL345_Arduino_Library/src/SparkFun_ADXL345.cpp for anyone who needs to change them.
This might help @Member #556651
How can i change the SPI pins to pins other then 11, 12 and 13?
The ATMega328 has hardware SPI on those pins so they can’t be changed. In theory you can probably write a software SPI library, but since you can run numerous devices on one SPI bus these are rare. If you are using a different microcontroller you will have to check the datasheet to find out where the SPI bus is.
Hi everything works fine! however i cant manage to measure free fall:(
and what are these:
what does the digit represent?
i dropped my accelerometer( ADXL345) from my table but the serial monitor did not display free fall
Please help! i really need an answer i cant find anything on the web.
I hooked up the ADXL345 with I2C and am getting data using the example code that is provided with this tutorial. I also ran the calibration script that is provided. But I don’t see anything in the tutorial that says how to convert that calibrated data to actual g.
——————– Tech Support Tips/Troubleshooting/Common Issues ——————–
Connecting Two ADXL345s
The ADXL345 has two I2C address (0x53 and 0x1D) as stated in the datasheet [pg 10 - https://www.sparkfun.com/products/9836 ]. Try looking at this tutorial for more information => http://codeyoung.blogspot.com/2013/06/connecting-two-adxl345s-to-one-arduino.html ].
If you've found a bug or have other constructive feedback for our tutorial authors, please send us your feedback!
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