Driver de Servo Motoare PCA9685 PWM I2C 16 canale 12 biti
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Numar articol:223222519
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Disponibilitate:Indisponibil
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Preț:35,00 Lei
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Anuntul a expirat la:29.04.2024, 02:15
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Specificatii
Description:
Want to make a hexapod walker? Maybe
you're making a piece of art with tons of moving parts, or you need
to drive a ton of LEDs with precise PWM output. Your
microcontroller has a limited number of PWM outputs, and you find
yourself running out! Not with the Adafruit 16-Channel 12-bit
PWM/Servo Driver - I2C interface. With this pwm and servo driver
breakout, you can control 16 free-running PWM outputs with just two
pins! Need to run more than 16 PWM outputs? No problem. Chain
together up to 62 of these beauties for up to an outstanding 992
PWM outputs.
Features:
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 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
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
i2c-controlled PWM driver with a
built in clock. Unlike the TLC5940 family, you do not need to
continuously send it signal tying up your microcontroller, its
completely free running!
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 for 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
- 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
(1)Drive board connected to
Arduino:
The PWM driver board uses the
I2C method, so only four lines can be connected to the Arduino
device:
"Classic" Arduino pin
mode:
+ 5v ->
VCC
GND ->
GND
Analog 4 ->
SDA
Analog 5 ->
SCL
Old Mega pin
way:
+ 5v ->
VCC
GND ->
GND
Digital 20 ->
SDA
Digital 21 ->
SCL
R3 and later Arduino pin
method (Uno, Mega &
Leonardo):
(These boards have dedicated
SDA and SCL pins)
+ 5v ->
VCC
GND ->
GND
SDA ->
SDA
SCL ->
SCL
VCC pin is only for the chip
power supply, if you want to connect the servo or LED lights, use
the V + pin power supply, V + pin supports 3.3 ~ 6V power supply
(chip safe voltage 5V). It is recommended to connect the external
power supply via the power supply terminal.
(2) power supply
part:
Most of the servo design
voltage is 5 ~ 6V, especially in a number of steering gear at the
same time running, with the need for high-power power supply. If
you are directly using the Arduino 5V pin to power the servo
directly, there are some unpredictable problems, so we recommend
that you have a suitable external power supply for the drive
board.
(3) Connect the
servo:
Most servos are connected
using standard 3-wire female plugs, as long as the corresponding
pin into the driver board on it. (Ground wire is generally black or
brown, the signal line is generally yellow or
white)
(4) for the driver board
assigned address:
Each drive board of the
cascade needs to have a unique access address. The initial I2C
address of each driver board is 0 × 40, you can modify the upper
right corner of the jumper I2C address. Connect a jumper with
solder to indicate a binary number "1".
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