@timb Hi, I have been messing around with an LSM303 from Polulu ( https://github.com/pololu/lsm303-arduino/tree/master/LSM303 ) I have copied the .cpp and .h as well, as the serial.cpp into Spark IDE The code seems fine as it was accepted by the IDE but I can’t seem to figure out how to read the da…

thanks peekay! The issue is I am not familiar with I2C and so, I am wondering if the same rule applies. There is allot more code than what I am used to using analogue or digital I/O. I would like to start simple and make an api request to see that my device is talking. Hopefully that makes sense…

[image] Dup: The issue is I am not familiar with I2C and so, I am wondering if the same rule applies. Dup, I am not sure what your situation is. Is your code running and working? If you are running the serial.ino demo than you should see some data output on your serial console (via USB). H…

peekay123, thanks for your help and patience! yes, i do have the pull-ups and I changed to "sprintf" I guess where I am getting confused is that there are multiple ways to communicate UART, SPI and I2C which is the one I want to use. With my .cpp below, I thought I would be able to get the “repo…

Dub, the question is whether the device is working or not over the I2C bus. I am not sure which exact Pololu LSM303 you have but the latest one works on either I2C or SPI. The examples and the library you referenced are all written for I2C. So the first question is does anything print? To debug…

Hey peekay123, I have the core talking serial but it is forcing my PC (mouse) to act strangely where I no longer have control. Not sure if it has to do with the COM#, must I use COM7 even though it is already in use? Also, is it a big deal if I use “snprintf” rather than “sprintf” ? The code com…

:wink: [image] Issues using serial debugging (Mouse moving) Troubleshooting I’m glad we know what was causing this without much trouble. Nice to know we know how prevent this from happening again also. Good work guys! …

Dup, follow the link kennethlimcp provided to hopefully fix the mouse issue. I forgot to remove the second argument in the sprintf line like this: sprintf(report, "A: %6d %6d %6d M: %6d %6d %6d", compass.a.x, compass.a.y, compass.a.z, compass.m.x, compass.m.y, compass.m.z); Serial.println(re…

peekay123, Thanks! LSM303 was detected LSM303 was detected LSM303 was detected LSM303 was detected LSM303 was detected …

Dup, I should really re-read my code before posting! Here is the correct code that would also print the data: include "application.h" include "LSM303.h" LSM303 compass; char report[80]; bool error; void setup() { Serial.begin(9600); Wire.begin(); delay(3000); // Delay to allow for startin…

thanks! I get this…pretty cool stuff Reading… A: 215 471 -16010 M: -2086 -2548 2199 next step is to get this stuff into a spreadsheet…thanks again!

LSM303 data from I2C [SOLVED]

Getting Started

kennethlimcp March 21, 2014, 2:45pm 8

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LSM303 data from I2C [SOLVED]

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