16-Channel 12-bit PWM/Servo Driver expander Aρχή φόρμας If you want to make a robot which has lots of moving parts or if you want to control too many LEDs with PWM outputs, then the limited PWM outputs of your microcontroller would be a big problem. To overcome this problem, the only thing you need is the above. You can control 16 free-running PWM outputs with 16-Channel 12-Bit PWM/Servo Driver using only 2 pins. You can even chain up 62 breakouts to control up to 992 PWM outputs. It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs. This is good when you want to control white or blue LEDs with 3.4+ forward voltages. 6 address select pins so you can wire up to 62 of these on a single I2C bus, a total of 992 outputs. Adjustable frequency PWM up to about 1.6 KHz 12-bit resolution for each output - for servos, that means about 4us resolution at a 60Hz update rate Configurable push-pull or an open-drain output The output enable pin to quickly disable all the outputs Terminal block for power input Reverse polarity protection on the terminal block input Green power-good LED 3 pin connectors in groups of 4 so you can plug in 16 servos at once Chainable design A spot to place a big capacitor on the V+ line 220Ω series resistors on all the output lines to protect them, and to make driving LEDs trivial. This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers.
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