Hello, I am trying to use this 9dof board to communicate to a computer without the FTDI breakout board. Im pretty new to this sort of stuff so I could use all the help I can get.
Can I use a USB-to-rs232 dongle to connect the Rx,Tx,Vcc and Gnd on the board, then plug into the computer, or would I need a special “FTDI dongle” thats overpriced of course.
If im totally missing something thats important, please let me know!
Hi,
You would need a 3.3V FTDI Breakout Board. You can use this DFRobot FTDI USB to Serial to connect the 9 Degrees of Freedom - Razor IMU to your PC.
Regards,
What if i wanted to connect it to a raspberry pi or an arduino, would I still need the FTDI board for the signal?
Is there a way i can directly connect it, or would I always need the FTDI board in between?
Hi,
You won’t need the FTDI Breakout Board if you want to connect it to an Arduino or Raspberry Pi. The 9 Degrees of Freedom will use UART communication with the Arduino or Raspberry Pi.
Attached an example of connecting a board to an Arduino Mega via UART.
Regards,
Ok, thanks for the info. I don’t have the UART board though, so its not that useful to me. I’m still having issues getting to talk to the arduino.
What kind of communication does the razor output? I noticed it said serial, but its obviously not just rs232. is it I2C?
Hi,
We apologize for the confusion. The picture we sent in our previous reply is an example of UART communication wiring with the Arduino Mega.
The 9 Degrees of Freedom - Razor IMU will connect directly to the Arduino using the TX and RX pins.
The 9 Degrees of Freedom - Razor IMU uses 3.3V voltage levels therefore you will need to use a level shifter or a voltage divider using 10kOhm and 20kOhm resistors.
This tutorial might be helpful.
Regards,
