What library do you need for the Arduino to control this? Any sample code?

Limor Fried wrote a lib and posted it to github: https://github.com/adafruit/Adafruit-PWM-Servo-Driver-Library

V+ at the terminal block is not directly connected to V+ on the rest of the board. How do I get actual power to the servos?

No the V+ of terminal block goes through a tiny transistor but since it does not turn on, you would have to mod the board to get power to servos from that terminal. Others just input to the pin near VCC labled V+

What are the peak amps for this board?

Each of the 16 outputs is limited to about 25mA. That would make the total current capability of the board no more than 400mA.

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🤖 Master your robotics game with precision PWM control!

BUILT IN PROTECTION - 220Ω series resistors on all PWM outputs safeguard your LEDs and servos from damage.
ROBUST IIC INTERFACE - Effortlessly integrate with Arduino and other microcontrollers via IIC for streamlined communication.
COMPACT CASCADE READY - Small 25x61mm board designed for easy stacking and expansion in complex robotics projects.
POWER STATUS INDICATORS - Green power LED and reverse polarity protection ensure reliable and safe operation every time.
SEAMLESS MULTI SERVO CONTROL - Drive up to 16 servos simultaneously with precision 12-bit PWM signals.

The HiLetgo PCA9685 module is a compact, 16-channel 12-bit PWM driver with IIC interface, designed for Arduino and robotics projects. It supports a DC 5-10V power supply, features built-in 220Ω resistors for output protection, and includes power indicators and reverse polarity safeguards. Its cascade design allows easy expansion, making it ideal for professional-grade multi-servo control.

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Manufacturer	HiLetgo
Part number	3-01-1070-2pcs
Item Weight	26 g
Package Dimensions	12.2 x 8.3 x 2.3 cm; 26 g
Item model number	3-01-1070-2pcs
Size	Small
Color	Blue
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

HiLetgo 2pcs PCA9685 16 Channel 12-Bit PWM Servo Motor Driver IIC Module for Arduino Robot

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