← flaviocopes.com

Powering an Arduino with a power bank

Published Feb 24 2021

Psssst! The 2023 WEB DEVELOPMENT BOOTCAMP is starting on FEBRUARY 01, 2023! SIGNUPS ARE NOW OPEN to this 10-weeks cohort course. Learn the fundamentals, HTML, CSS, JS, Tailwind, React, Next.js and much more! ✨

I was working on an Arduino project and when I finished it I said “well it’d be cool to power it with a USB powerbank and put it outside”.

I did that. I connected the Arduino to the powerbank and it worked!

But after about 20 seconds the Arduino powered off.

Well, the powerbank turned off. And along with it the Arduino.

Turned out the Arduino didn’t consume enough power to be noticeable by the powerbank that thought nothing was connected and it was just wasting its cycles.

I found some solutions to the problem, involving making the Arduino consume more power. Like https://www.instructables.com/USB-External-Battery-Packs-on-Arduino-turns-OFF/.

Or getting a powerbank that didn’t turn off automatically.

In my case I decided to go with a rechargeable battery instead, since I was working with an Arduino MKR 1010 WiFi and it had a 3.7V Li-Po battery option.

I write books for developers 👇🏼

© 2023 Flavio Copes Flavio Copes made in Italy 🇮🇹 using Notion to Site Notion to Site