A simple and inexpensive solution is to use a 'mobile power bank'
by Giovanni Carrera
Make the smallest Arduino possible with just an ATtiny85 8-pin DIL-IC running in 8MHz from an internal Oscillator.
by Kristian Blåsol
How to make a cable that can connect your Arduino board to a TV RCA video jack. Put your Arduino on the big screen!
Project tutorial by Paul Scott
A LEGO compatible case for the Arduino Micro to be used together with the Arduino based LEGO power function IR-receiver.
Project tutorial by kengdahl
Logic Analyzer, for arduino and other AVR with a very nice working processing interface, you could run it also on any android device.
Project tutorial by Vincenzo G.
I used a Raspberry Pi 2 to make a mini data acquisition system that fits inside of a lunchbox.
Project showcase by Josh Makatura
This is a mostly printed 3D Printer very suitable for a hobbyist. It's an easy and cheap way to get into 3D printing.
Project showcase by John Weers
Measure rotation speed (RPM) with Optocoupler and Encoder disk and Arduino - Quick and Easy!
by Boian Mitov
by Alex Glow
This tester can be used for NiCd, NiMh, and all flavors of Li Ion rechargeables.
Project showcase by sim-flynn-13
Using the technique I'm going to show you it was measured to be 259.91Hz ... only 0.09Hz away from an Exact Middle C Frequency of 260Hz.
Project tutorial by Anthony Kelly
This post will demonstrate how to configure Arduino/Genuino 101 for the first time and blink a LED.
Project showcase by Muhammad Afzal
A RFID module connected to two LEDs.
Project tutorial by Tudose Matei
Photon / Spark Core and Arduino talk through serial.
Project tutorial by Garrett Bartley
eDOTcore: A bit more than an Arduino Uno board.
Different PLA filaments have different melting points - In this tutorial, we will find the ideal temperature for a specific PLA filament.
One of the things PocketCHIP can be used for is programming and controlling or processing date from an Arduino. We show you how.
by Josh From BreakoutBros.com
Plug in a device to your computer, push a button, and things happen! Several different modes do useless things with your mouse/keyboard.
Project in progress by Scott Clandinin
A cheap (less than $20) signal generator that can produce a sine wave, up to 70MHz (Though practically 20-30MHz).
Project tutorial by Umar Sear
A large DIY Kossel XL RepRap 3D printer.
Project tutorial by Johnathan Hottell
Make a power meter for 5v circuits using material from the Arduino Starter Kit
Project tutorial by MicroBob
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