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Simple and small
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Simple and small

by ktshoema on Tue Aug 20, 2019 5:24 pm

I am designing something and I need a small board and a small (micro or nano) servo. The smaller the board the better.

Very basic programming. Press/hold button, servo rotates to a specific angle. let go of the button and the servo returns to its original location. Probably will have an
I have basic programming experience but am a quick study. Programming in Python is preferred.

The device ideally would be battery operated and possibly have a LED also.

Which board do you recommend that will work with a small servo and battery power?

Thanks for the help!

ktshoema
 
Posts: 2
Joined: Tue Aug 20, 2019 5:09 pm

Re: Simple and small

by adafruit_support_carter on Tue Aug 20, 2019 5:29 pm

Pins:
  • Button
  • Servo
  • LED

Sounds like you could get away with a Trinket M0:
https://www.adafruit.com/product/3500

It can run CircuitPython. More info:
https://learn.adafruit.com/adafruit-tri ... on-arduino

adafruit_support_carter
 
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Re: Simple and small

by ktshoema on Tue Aug 20, 2019 5:39 pm

Thank you! That is what I actually thought.
Looking at the trinket, I read "It is suggested you use an external wall or battery supply and not power the servo via the regulator. Servos can draw up to 500mA and the Trinket regulator can only source 150 milliamps (USB power generally 500 milliamps). The female DC adapter is helpful in connecting power supplies with barrel connectors to breadboards."

Does that mean I need a separate battery/power supply for the servo than the board?

Additionally, looking at the sub-micro servo, how many mA's will it draw? https://www.adafruit.com/product/2201

Thanks for the quick responses!

ktshoema
 
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Joined: Tue Aug 20, 2019 5:09 pm

Re: Simple and small

by adafruit_support_carter on Tue Aug 20, 2019 5:49 pm

"via the regulator" would mean using 3V pin. The USB and BAT pins are before the regulator. Typically you would split the power and route one to the Trinket and one to the servo. Something like this:
https://learn.adafruit.com/circuitpytho ... thon-servo

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Please be positive and constructive with your questions and comments.