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

[TinselKoala]

With the Chinese 2560 boards USB is on Com 4 not 1, as you would expect from an original.

L192

Actually, with Windows especially, this will depend on several factors, like what else you have plugged in, where you have it all plugged in, the day of the week, and whether or not you've sacrificed a mouse to Micro$haft lately.

For example, I am looking at a fresh installation of the Arduino IDE on my Win7Pro laptop, and the choices offered to me in the Tools>Port menu are COM3 and COM11 (yes, COM Eleven) and the Mega is using COM11. I'm pretty sure if I plug it into a different USB port on the Lenovo laptop, a different COM port will be assigned. That's Windows messing with us, not the Arduino IDE.
(My Mega is an OSEPP brand, which is a Canadian company, but I can't tell where the board was actually manufactured.)
As long as the IDE is installed correctly, along with the drivers, the COM-to-USB connection should be automatic, and all the user needs to do is to identify which of the port choices in the Port menu correspond to the Arduino device you have connected.

[listener191]

If pressing board reset restores USB comms, I would check C8, (missing or broken) assuming this is a CH340G board not an original board with FTDI in which case that would be C7.

This cap couples a line from the CH340G, to assert a reset and communication with the 2560.

L192

[Jeg]

It is not only the magnetic field a possible source of interaction. Displacement currents move perpendicular to the mag field, charging any plate in that direction. In any case, a sheet of grounded copper underneath arduino will hopefully ground them.   

[gotoluc]

Wow, that's a lot of communications about a failed Arduino com port.
Today I'm going to do some in out power power test at the fixed frequency it's presently working at.
If someone can write the same program for Popeller (shown in video) that would be great.
Thanks everyone for your help.

Fr. Wow, c'est beaucoup de communications sur un port de com Arduino échoué.
Aujourd'hui, je vais faire un test de puissance à la fréquence fixe sur laquelle il travaille actuellement.
Si quelqu'un peut écrire le même programme pour Popeller (montré dans la vidéo) ce serait génial.
Merci à tous pour votre aide.


Video: https://youtu.be/LAC33oRHGvs

[gotoluc]

Guys, please.  Input power and 5V power to H-Brige has always been off when I communicate with the Arduino. So there is no possibility this problem is related to any magnetic fields.

Fr.  s'il te plait. La puissance d'entrée et l'alimentation 5V de H-Bridge ont toujours été coupées lorsque je communique avec l'Arduino. Il n'y a donc aucune possibilité que ce problème soit lié à des champs magnétiques.