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You can also use these boards to control LEDs, so you can control 992 LEDs individually and control their brightness as well. Board 3 – Address Terminals 000011 (solder jumpers over A1 & A0) – Address 0x43.Board 2 – Address Terminals 000010 (solder jumper over A1) – Address 0x42.Board 1 – Address Terminals 000001 (solder jumper over A0) – Address 0x41.Board 0 – Address Terminals 000000 (no jumpers used) – Address 0x40.To change the address of a board, you just need to solder a bridge across the two address terminals. On the top right of each board is a set of bridgeable address jumpers which allow you to bridge different combinations to create a unique address for up to 62 different boards. So you can plug your servos directly into the board instead of needing additional wiring like you’d need if you were plugging the servo directly into your Arduino. What’s also nice about these boards is that they’re already set up to accommodate the 3 pin servo plugs. Each board can be plugged into the pins on the board before it, with the first connected to your Arduino.Įach board also has two power terminals at the top to provide a dedicated 5-6V power supply to the outputs and then the 16 outputs along the bottom.
Hooking up a servo motor arduino drivers#
You can use either set of control inputs to connect your board to your Arduino, but they’re primarily useful to chain the drivers together. Here’s a video summary of the tutorial and servos in operation, read on for the step by step instructions and the code:Įach board has two sets of control input pins, one on each side. They’re also relatively inexpensive, there are good quality ones available for around $10 online, but you can also find ones from just $2-$3 each if you’re prepared to wait a bit longer for shipping. Each one of these boards can drive up to 16 servos or PWM outputs and you can chain up to 62 of them together, meaning that you could drive up to 992 servos – all controlled by just two pins on your Arduino.
Hooking up a servo motor arduino how to#
In this tutorial, I’m going to be showing you how to connect up to 992 servos to an Arduino by using these 16 channel PCA9685 PWM drivers, which are controlled over the I2C interface.