Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface - PCA9685
We just purchased 2 16-Channel 12-bit PWM/Servo Drivers.
What size of capacitor is used (shown in the photo?)
http://www.adafruit.com/index.php?main_ ... ge&pID=815
Also: How are two of them connected to control more that 16 servos?
Thanks
16-Channel 12-bit PWM/Servo Driver ?
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Re: 16-Channel 12-bit PWM/Servo Driver ?
We should have a full tutorial up shortly. In the mean-time:
The capacitor is not essential in most cases. If you see erratic behavior when moving multiple servos at once, you can add some capacitance. Something like a 470-1000uF @6v or more is a good value to start with.
To connect 2 or more in series, just chain the 6-pins one the end of the board to the next board. A 6-pin cable like this makes it easy. Use a bit of solder to bridge the address jumpers on the upper right of the board. For 2 boards, just bridge A0 on the second board. Its I2C address will then be 0x41.
The capacitor is not essential in most cases. If you see erratic behavior when moving multiple servos at once, you can add some capacitance. Something like a 470-1000uF @6v or more is a good value to start with.
To connect 2 or more in series, just chain the 6-pins one the end of the board to the next board. A 6-pin cable like this makes it easy. Use a bit of solder to bridge the address jumpers on the upper right of the board. For 2 boards, just bridge A0 on the second board. Its I2C address will then be 0x41.
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Re: 16-Channel 12-bit PWM/Servo Driver ?
thank you for the help.adafruit_support wrote:We should have a full tutorial up shortly. In the mean-time:
The capacitor is not essential in most cases. If you see erratic behavior when moving multiple servos at once, you can add some capacitance. Something like a 470-1000uF @6v or more is a good value to start with.
To connect 2 or more in series, just chain the 6-pins one the end of the board to the next board. A 6-pin cable like this makes it easy. Use a bit of solder to bridge the address jumpers on the upper right of the board. For 2 boards, just bridge A0 on the second board. Its I2C address will then be 0x41.
we're looking forward to the tutorial
Please be positive and constructive with your questions and comments.