| GY-85 | Arduino UNO |
|---|---|
| VCC_IN | 5V |
| GND | GND |
| SCL | A5 |
| SDA | A4 |
I am using linux and to me the board shows up on the device file /dev/ttyUSB0.
$ platformio serialports list
/dev/ttyUSB0
------------
Hardware ID: USB VID:PID=1a86:7523
Description: QinHeng Electronics HL-340 USB-Serial adapter
$ platformio run --target upload --upload-port /dev/ttyUSB0
$ platformio serialports monitor --port /dev/ttyUSB0
Run the following command with the board connected to the USB port:
$ platformio run --target upload --upload-port /dev/ttyUSB0
Then you should see the "CSV" like records show up in the terminal:
$ platformio serialports monitor --port /dev/ttyUSB0
[...]
-0.1094#-0.0938#0.9453#/#4.8000#-0.2783#-0.0696#/#19.8071#/#302.9341
-0.1094#-0.0859#0.9531#/#4.8000#-0.2783#0.0000#/#19.8000#/#302.9760
-0.1094#-0.0859#0.9531#/#4.7304#-0.3478#0.0000#/#19.8214#/#302.7963
-0.1094#-0.0859#0.9453#/#4.7304#-0.2783#-0.0696#/#19.7821#/#302.9760
-0.1172#-0.0938#0.9453#/#4.8000#1.8783#5.0087#/#19.8143#/#302.7413
0.0781#-0.7578#0.5313#/#-10.5739#-11.5478#11.2000#/#19.7857#/#276.4858
0.0313#-0.5000#0.8047#/#26.5043#9.5304#-20.5217#/#19.7643#/#293.6818
-0.1406#-0.8516#0.3750#/#-8.0696#-7.3739#45.9826#/#19.6750#/#287.7943
Where every row contains X,Y,Z from the accelerometer (in G), then X,Y,Z from the gyroscope (in °/s), then the temperature (in °C), then the heading (in °). The separator for X,Y,Z is #. The separator for different sensor measurements is #/#.
The folder where platformIO compiles, links e prepare all the steps to generate the firmware is .pioenvs. That gets generated when the platformio command is run on the command line.
To get information about the memory usage of the compiled file etc.:
.pioenvs/uno$ avr-size firmware.elf
.pioenvs/uno$ readelf -a firmware.elf
.pioenvs/uno$ avr-objdump -d firmware.elf
To see the decompiled content of a .o file:
$ avr-objdump -S .pioenvs/uno/GY-85/ITG3200.o
There's also a dashboard (written in Processing) that shows some of the measurement coming from the sensors and printed on the serial port. Check out this dashboard folder (it contains a README). The dashboard folder contains also a board simulator written in python 2.7 to simulate the sensor measurements printed on the serial port using a virtual serial port.
The following is an example of board setup: you can see the Arduino UNO board and the GY-85 suite of sensors running live and printing data on the serial port through the USB connector.
