Datasheet

Powering Servos

Powering Servos / PWM

This HAT has two power supplies. One is VCC - that is the 3.3V power from the Raspberry

Pi, it is used to power the PWM chip and determines the I2C logic level and the PWM signal

logic level. This supply will always be on if the Pi is plugged in and working, check the PWR

LED on the Pi (it's the red LED)

To po wer servos you will need to also connect the 5-6V V+ power supply -

this is the power supply for the servos. (If you are lighting up single 20mA standard draw

LEDs you may not need this power supply, but I'm assuming you want to use servos here.)

This power supply should be 5 or 6VDC, most servos work well at 5V and if you give them

6V will be a little stronger.

You can connect this power through the blue terminal block o r the 2.1mm DC jack. There is

reverse-polarity protection in case you hook up power backwards, however you should use

either the DC jack or the terminal block, not BOTH!

https://learn.adafruit.com/adafruit-16-channel-pwm-servo-hat-for-

raspberry-pi

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