RASBERRY PI

Features :

1. Adjustable frequency PWM up to about 1.6 KHz
2. 12-bit resolution for each output – for servos, that means about 4us resolution at a 60Hz update rate
3. Configurable push-pull or an open-drain output
4. The output enable pin to quickly disable all the outputs
5. Terminal block for power input
6. Reverse polarity protection on the terminal block input
7. Green power-good LED
8. 3 pin connectors in groups of 4 so you can plug in 16 servos at once
9. Chainable design
10. A spot to place a big capacitor on the V+ line
11. 220-ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial.
12. This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers.