Quin Etnyre has been into all things Arduino since he was a kid. He already has 28 Instructables published, founded his own company called Qtechknow in 2012 which sells ArduSensors and a line of fun and educational kits and oh, he is still just 14 years old.
His latest Arduino-based design is the Qduino Mini which is the first tiny Arduino compatible board to incorporate a battery charger and fuel gauge to let you know when the battery needs recharging.
The Qduino Mini is 1 inch by 1.5 inches and weighs just 5 grams which makes it ideal for use on airborne projects such as quadcopters, drones or high altitude balloons.
Main features of the Qduino Mini:
ATmega32U4 Processor – Arduino Leonardo compatible
32 KB Flash storage
2.5 KB SRAM
3.3 V @ 8 MHz
20 digital I/O // 14 dedicated
12 analog Channels // 6 dedicated
7 digital I/O also PWM channels
SPI, I2C, UART available
LED Indicators for: ON, charge status, TX, RX, D13
TPS78233 3.3 V 150 mA regulator
MCP73832 LiPo battery charger
MAX17048 LiPo battery fuel gauge
The Qduino Mini - [Link]
I am experimenting with RF and IR signals in various frequencies and had some trouble with the receivers and needed to see what kind of signal i was receiving. I cannot afford a real oscilloscope but i knew about the older Arduino oscilloscopes.
After trying many different versions of code and tutorials, I was unable to get a single one to work, and all the tutorials and guides around was 2-3 years old. Not sure if it is the IDE or the actual hardware that has changed in such a way that it didn’t work anymore.
I finally found a working oscilloscope from a Japanese website, (linked below) and a working TFT screen library, meaning i could read the various signals received.
A simple DIY Oscilloscope with Arduino Uno and Mega - [Link]
by mi.vasilakis @ instructables.com:
Today I will show you how to make your own arduino compass by using the MHC5883L 3-axis digital compass board.
I prefer to build my own arduino based circuit by using the ATmega328p uno possessor, but this is optional for you. Buttons are used for turn on or off display leds and to change display mode of compass.
Arduino Digital Magnetic Compass – HMC5883L - [Link]
The Tsunami is a powerful and flexible signal generator, analyzer, and experimenter’s kit built on the Arduino platform. by Nick Johnson @ kickstarter.com:
The Tsunami is a powerful and flexible signal generator built on the Arduino platform. It’s the best way to get started experimenting with analog signals, and a great tool for a huge variety of tasks, too.
We’ve taken the versatile processor behind the Arduino Leonardo, and combined it with a Direct Digital Synthesis chip, which makes generating analog signals incredibly straightforward. Then, we’ve added on flexible input and output circuitry, and an easy to use software library, to make working with analog signals as easy as blinking an LED.
Tsunami – signal generator and analyzer - [Link]
by jojo @ circuitstoday.com:
In this article, we are going to see how to interface GSM Module to Arduino. There are different kinds of GSM modules available in market. We are using the most popular module SIM900 and Arduino Uno for this tutorial. Interfacing a GSM module to Arduino is pretty simple. You only need to make 3 connections between the module and arduino. So lets get to business!
How to Interface GSM Module and Arduino-Send and Receive SMS - [Link]
Anyone can build a robot quickly with this kit. We take care of all the wiring so that you can focus on making it uniquely yours. by Funnyvale:
Hackabot Nano is a very compact many-in-one plug-and-play Arduino Robot. The goal is to help everyone build a feature-rich robot without all the messy wiring. You simply connect the motors, plug in the sensors and controller and you may start programming. We even provide sample programs to help you get started.
In addition, a free Android app will be developed once we hit our stretch goal of $10000. With the app, even kids can navigate the robot with a smart phone or tablet.
Not into robotics? You can use this as a platform to build your Arduino based IoT (Internet of Things) devices as well.
Hackabot Nano: Compact Plug and Play Arduino Robot - [Link]
Embrio, create Arduino programs without writing code:
Easy To Use -Make programs by adding and connecting nodes. No coding necessary!
Real Time Connection -Work with a live connection to your Arduino, see how your program works as you build it!
Powerful -While easy to use, Embrio is a powerful development tool that you won’t outgrow as your skills develop.
Embrio: A visual programming environment for Arduino - [Link]
I have just recently had solar pv installed, mainly to future proof my energy costs, I do not expect it to be like drilling for oil in my back garden, however the return looks to be encouraging.
The install gives you another single unit meter, from this you will see the total amount the panels produce, but that is about it.
I wanted to know how much the production was as it was happening, I discovered the light blinks on the front of the meter will flash 1000 times for each kWh of electricity which passes through. The rate of the flashing of the LED tells you how much power is currently passing through the meter.
A basic Arduino Solar PV Monitor - [Link]
The Qduino Mini is the first tiny Arduino compatible that has a built-in battery charger & fuel gauge.
The Qduino Mini is perfect to embed in your electronics projects, it’s super small, inexpensive, has a battery connector & charger built-in, & a fuel gauge that can tell you when to charge the battery!
The Qduino Mini is Arduino-compatible & 100% open source, hardware and software meaning that making and programming your first circuit is a breeze. Hardware is hard, so we decided to make it a little bit easier. The day that the first Qduino Mini ships, all of the design files, including EAGLE board files, schematic, and code will be released under an open source license. Here’s what it includes:
Qduino Mini: Arduino Compatible + Battery Charger & Monitor - [Link]
by dkschottt @ instructables.com:
Being new to Arduino I was a bit overwhelmed by the different ways to do things. So this is what I came up with!
I am using an Arduino UNO R3 clone but the connections I believe are the same for most Arduino’s or can be easily modified for your particular model. This project is the beginning of a UROV that I am building from the ground up and this is my first attempt to work with Arduino. I do not want to turn my UNO into a webserver if I can avoid it because of the shortage of memory and this project is just a few of the sensors that I want to use for my project. I am going to start out by using the premise that my project will eventually use RS485 to communicate serially from my UNO to the PC via a tether.
Getting Arduino data to a web Page - [Link]