Pierre's 170W in 1600W out Looped Very impressive Build continued & moderated

[cheors]

L298 boards :    WARNING :

Connect IN1 to IN4 and IN2 to IN3 for full paralleling .
OUT1 to OUT4 and OUT2 to OUT3.
ENABLEA to ENABLEB
-----------------------------------------------------------------------
Connect IN1 to IN2 and IN3 to IN4 for semi paralleling .
OUT1 to OUT2 and OUT3 to OUT4.
ENABLEA and ENABLEB separated

Refer to datasheet:
http://www.st.com/content/ccc/resource/technical/document/datasheet/82/cc/3f/39/0a/29/4d/f0/CD00000240.pdf/files/CD00000240.pdf/jcr:content/translations/en.CD00000240.pdf

[gotoluc]

Luc, check the serial port settings in your laptop Arduino program (the program you upload the sketch with). Most likely the wrong serial port is selected so it can't talk to the Arduino. Also make sure the correct Arduino is selected: should be the 2560 which is the board you are using.
PmgR

Yes, I've checked all that. It's the same laptop I used and all parameters are correctly selected.

Could it be when I change  x=5; //total loop delay is 20*x = 100ms. f=10Hz   to   x=50; //total loop delay is 20*x = 100ms. f=10Hz  I also need to change the 100ms. f=10Hz to 1000ms. f=1Hz ?

Thanks
Luc

[pmgr]

Yes, I've checked all that. It's the same laptop I used and all parameters are correctly selected.

Could it be when I change  x=5; //total loop delay is 20*x = 100ms. f=10Hz   to   x=50; //total loop delay is 20*x = 100ms. f=10Hz  I also need to change the 100ms. f=10Hz to 1000ms. f=1Hz ?

Thanks
Luc

No, that doesn't matter. It's behind // which is a comment. Besides, the sketch compiles fine you said. Just doesn't upload. I suggest rebooting your laptop and unplugging and replugging the USB that goes to the Arduino. If you can't figure it out, I can assist you later tonight after I get home.
PmgR

[gotoluc]

Okay, thanks for helping while you're still at work.
I think there may be a usb port conflict.  I'm rebooting to try to resolve it.

Regards
Luc

[Slider2732]

Yeah, it's just the port by the looks of it.
Nothing wrong with the code.
At the bottom of your screen it shows you've selected the right type of Arduino and indeed it compiles fine. The only thing different would be the Port.
Click 'Tools', then 'Port' and see what it says there...you should only have 1 or 2 to select from and it seems like it's picking the wrong one as default.

Another way, is to unplug the Arduino USB cable and plug it back in, the other port will then be selected. At least here on Linux Mint it does, from USB0 to USB1 even if it's the same device being plugged in and out.