16 Channel PWM Servo Control Board

Specifications

General:

• Dimensions: Without headers or terminal block: 2.5 x 25.4 x 3mm
• Weight Without headers or terminal block: 5.5g
• Weight With 3x4 headers and terminal block: 9g
• Built-in Clock: Free-running PWM driver, eliminating the need for continuous microcontroller signals
• Output Control: Output enable pin for quickly disabling all outputs
• LED: Green power-good LED for easy diagnostics
• Space: Ideal for adding a large capacitor on the V+ line to stabilize power input

Power Input:

• Terminal block with reverse polarity protection
• Optional 0.1" breakout pins for flexible power connection

I2C Interface:

• 7-bit address range: 0x60–0x80, selectable with solder jumpers
• Connects to microcontrollers (e.g., Arduino) with 4 lines; 5V -> VCC, GND -> GND, SDA (data) and SCL (clock)

PWM Outputs:

• 16 channels with 3-pin connectors grouped in sets of 4
• Each output includes 220-ohm series resistors for protection and easy LED control
• Configurable as push-pull or open-drain output

PWM Resolution and Frequency:

• 12-bit resolution per channel (4096 steps)
• Adjustable PWM frequency up to 1.6 KHz
• ~4µs resolution at a 60Hz update rate (ideal for servos)

Addressable and Chainable:

• Features 6 address select pins
• Supports daisy-chaining of up to 62 boards on a single I2C bus
• Total of 992 outputs can be controlled (ideal for large servo or LED projects)

Voltage Compatibility:

• 5V compliant: Safe to use with 3.3V microcontrollers while driving outputs up to 6V
• Supports LEDs with higher forward voltages (e.g., white or blue LEDs at 3.4V+)