Introduction: Simple Power Adaptor for Arduino
Here is a simple and cheap way to get your arduino power.
This instructable only use "three things" and can be finished ~1 minute :-
1. power connector (for Arduino Uno, it is 2.1mm power connector)
https://www.arduino.cc/en/Main/ArduinoBoardUno
2. "2-pins" terminal block
3. solders
Although I want to write something, but it seems u can understand by viewing the photo.
1. unscrew the power connector and bend it (as photo shown).
2. shorten 1 pin of the terminal block
3. solder them
U can now easily power your arduino...
Cheers
Step 1: About the Plastic Part of the Power Connector.
From this instructable, the plastic part of the power connector was left.
This plastic can be used as 5mm LED cap which shown on the photo.
Have a look :
https://www.instructables.com/id/Pencil-with-LED-lighting/

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31 Comments
6 years ago
Brilliant!!!
7 years ago
Your idea... simple AND awesome. Those are the best. Thanks!
7 years ago
You got my vote kokpat.
7 years ago
Kind of late :D
Reply 7 years ago
comes in male too:
http://www.adafruit.com/products/369?gclid=Cj0KEQi...
but thats a great hack for non standard sizes, could i suggest maybe a little heat glue to prevent shorts and increase mechanical strength?
Reply 7 years ago
How about using putty (plastic model) ?
It can be easily filed or paint after dry.
https://www.google.com.hk/search?q=plastic+model+p...
7 years ago
This is awesome! You should enter the 3 things contest!
Reply 7 years ago
Thanks you very much.
I had applied the 3 things contest after u notice me.
I don't know whether I am eligible or not, first I think I use just two things, but after I think I had used 3 things...
i.e. a power connector, terminal block and some solders.
7 years ago
Nice !
7 years ago
Nice thanks
7 years ago
Great Idea!!!!?
7 years ago
Genius simplicity! Thank you for sharing this idea, I can't believe I haven't thought of something like this!
Good at you.
7 years ago
Thank you for sharing this great idea!
7 years ago
Wouldn't it be simpler to connect the battery connector wires to the power connector? The terminal block isn't needed.
Reply 7 years ago
=^.^=
That's okay, sometimes I directly solder the wire on Arduino.
But as I made it, it means I need the terminal block. Just say get power from breadboard.
Reply 7 years ago
Thanks.
7 years ago
Whats the size of the power connecter?
Reply 7 years ago
2.1mm
https://www.arduino.cc/en/Main/ArduinoBoardUno
7 years ago
I have no idea what that green thing is, or how to obtain any of the parts. A few words might be helpful.
Reply 7 years ago
The green thing is called "terminal block".
http://www.tradekorea.com/product/detail/P285299/Top-Quality%7CPrompt-Delivery%7CFree-Warranty-Terminal-Blocks.html