Descripción

****************** COLDFIRE ELECTRONICA *******************




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¿ Estas montando un robot hexápodo con Arduino o algo con muchos servos y no tienes pines PWM suficientes ? Esta Placa te permite olvidarte de ese problema ya que puede gestionar hasta 16 servos con tan solo 2 pines utilizando el bus I2C. La dirección I2C también se puede ajustar, así que puedes combinar hasta 62 placas y obtener 992 salidas, ! Que Locura !

Usala con Arduino, Raspberry Pi, Beaglebone o cualquier Microcontrolador con Bus I2C. También puedes controlar 16 salidas PWM para modular la potencia de Leds, tiras de Leds, etc...



* It's an I2C-controlled PWM driver with a built-in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, it's completely free running!

* It is 5V compliant, which means you can control it from a 3.3V microcontroller, with 3.3V logic pull-ups, and still safely sink up to 5.5V outputs (this is good for when you want to control common-anode 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 - that's a lot of servos or LEDs.

* Adjustable frequency PWM up to about 1.6 KHz.

* 12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate.

* Configurable push-pull or open-drain output.

* Output enable pin to quickly disable all the outputs.


We wrapped up this lovely chip into a breakout board with a couple of nice extras:


* Terminal block for power input (or you can use the 0.1" breakouts on the side)

* Reverse polarity protection on the terminal block input. The terminal block included with your product may be blue or black.

* Green power-good LED.

* 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.

* "Chain-able" design.

* A spot to place a big capacitor on the V+ line (in case you need it)

* 220 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial.

* Solder jumpers for the 6 address select pins.



Dimensions (no headers or terminal block) 2.5" x 1" x 0.1" (62.5mm x 25.4mm x 3mm)
Weight (no headers or terminal block): 5.5grams.
Weight (with 3x4 headers & terminal block): 9grams.
This board/chip uses I2C 7-bit address between 0x40-0x7F, selectable with jumpers.





NOTA: LA PLACA NO INCLUYE SERVOS NI PLACA ARDUINO.



** INCLUYE TUTORIAL, LIBRERIAS Y EJEMPLOS CON ARDUINO, RASPBERRY PI ( PDF EN INGLES, HECHOS POR ADAFRUIT ).