Hello everyone,
I was trying to follow the Razor AHRS tutorial at https://dev.qu.tu-berlin.de/projects/sf … rial#Intro.
I’m having some trouble uploading the firmware on the board. Arduino says “Done Uploading.” but it also gives me this error “avrdude: stk500_getsync(): not in sync: resp=0x0d”.
Moreover, the output I get on the serial monitor (for the acceloremeter for instance) has almost the same format (x= 123, y= 123, z= 123) but it does not start with #YPR so I’m guessing this output is coming from the bootloader code.
What do you think the problem is?
I am using the IMU Razor 9DOF and I’m connecting it to my PC through a TTL to USB converter.
The pins are connected as follows:
Board Converter
TXO RXD
RXI TXD
3.3V 3.3V
GND GND
The DTR and CTS pins on the board are currently not connected to anything.
Also, the board outputs readings in the above-mentioned format whether or not it’s connected to a battery, It seems that the TTL to USB converter is powering the board just fine that it doesn’t need the Li-Po battery.
Your help will be much appreciated.
Thanks,
Shady