SunFounder Smart Video Car Kit B+, Руководство пользователя

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12
F. Servo Controller
The Servo Controller is built based on PCA9685. PCA9685 is a 16-channel LED controller with
I2C bus interface. The resolution ratio of each channel is 12 bits
(2
12
=4096 levels). The
controller works in a frequency between 40Hz and 1000Hz and its duty cycle can be adjusted
in a range of 0 to 100%. It provides PWM signals for the servo and controls the rotation angle
of the servo. Meanwhile, the module controls the duty cycle of the square waves output
from channel 14 and 15 to regulate the rotational speed of the DC motor, so as to control
the speed of the car.
G. 18650*2 Battery Holder
The battery is to use two 18650 batteries to power the modules and servos on the car.
Note : Please pay attention to the cathode (-) and anode (+) marks inside the holder (near
each pole). Install the 18650 batteries accordingly: battery cathode to holder -, and battery
anode to .
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