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Pca9685
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Adafruit PCA9685 16-Channel Servo Driver
cdn-learn.adafruit.comNov 15, 2021 · for the PCA9685 output, should be 3 - 5V max! It's also used for the 10K pullups on SCL/SDA so unless you have your own pullups, have it match the microcontroller's logic level too! V+ - This is an optional power pin that will supply distributed power to the servos. If you are not using for servos you can leave disconnected. It is not used