Motors slowing sporadically - ESC issue

Hello! I have an Arduino Uno running 4 Emax MT2204 motors and 4 Simonk ESC's. The problem is that when I run the motors, they all slow to a stop after a few seconds with full speed signal being sent. I calibrated the speed controllers (i think) by sending full throttle, waiting for beeps, then low throttle. (not actually using a joystick, just writing the speeds with code). Any ideas? Thanks!

Hi, Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.,148850.0.html then look down to item #7 about how to post your code. It will be formatted in a scrolling window that makes it easier to read.

Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?

You do have the gnd of the arduino connected to the gnd of the ESC?

A link to the data for the ESC please.

Thanks.. Tom... :)

If the ESC just takes regular Servo output from the Arduino I suspect the problem is in the ESC itself or the power supply you are using.

Post a link to the manual / datasheet for the ESC.