Electronic – connect a Raspberry Pi and a servo shield to a single power supply

battery-operatedpowerpower supplyraspberry piservo

I'm building a robot that requires 12 servos and a Raspberry Pi. I will be using the Adafruit 16-channel servo shield(https://www.adafruit.com/product/1411) and a Raspberry Pi 3B. Of course, if they were both connected to the same power supply, it would be way easier to turn the system on and off.

Is there any way to do it, even with additional pieces or arrangements? If so, how?

Also, could the power supply be a battery? What characteristics should it have?

Best Answer

Read the fine#ยง* manual RTFM

5v 10A switching power supply (http://adafru.it/658) (up to perhaps 16 servos).  V
4xAA Battery Holder (http://adafru.it/830) - 6v with Alkaline cells.     
4.8v with NiMH rechargeable cells, portable!    
4.8 or 6v Rechargeable RC battery packs from a hobby store.

https://cdn-learn.adafruit.com/downloads/pdf/adafruit-16-channel-pwm-slash-servo-shield.pdf?timestamp=1598199855

Each servo under max load draws 1A . Estimate your Ah or Wh needs and dont undersize it.

It you overvoltage with 2S3P Li Ion you must control acceleration not just position to avoid over heating servos but that might work. A battery balancer extends life.

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