I'm trying to control an ESC from an Arduino Nano. The ESC has a potentiometer to control the speed of the motor.
I tried to hook a PWM output to the wiper of the potentiometer, but it doesn't work. It seems this ESC doesn't accept PWM, only a constant voltage. It seems that a NE555p timer controls the speed.
I bought a MCP4725 DAC and after hooking it up to the Arduino Nano, it outputs a steady voltage.
I programmed it to output 2.5V (middle of the range of the ESC after checking with the multimeter) and checked it with a multimeter. It outputs 2.37V. Then I connected the output of the DAC to the wire were the potentiometer wiper was connected to the ESC, but... it doesn't work.
Any advice would be appreciated.