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. http://forum.arduino.cc/index.php/topic,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.

...R