This is a simple RS232 to RS485 converter that is self powered using the TX, RX or RTS, CTS signals for power. The RS232 is DB9 female connector, and the RS422 side is a DB9 male or 4 position terminal block.
This 16-CH. 12-bit PWM/Servo Driver-I2C-PCA9685 for Arduino-Raspberry Pi uses I2C 7-bit address between 0x60-0x80, selectable with jumpers.Terminal block for power input (or you can use the 0.1" breakouts on the side).Reverse polarity protection on the terminal block input.3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1" so you can only stack 4 next to each other on 0.1" header
