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]
In this video we are going to build an Arduino Uno clone in a breadboard using only 5 parts.
Arduino Uno (ATMEGA328P) on a breadboard - [Link]
by Francesco Truzzi :
Some time ago I came across a new chip from TI, the HDC1000. It’s a temperature and humidity sensor with I2C interface and requires little to no additional components. It comes in an 8BGA package: we can all agree it’s pretty small.
Some of the peculiar characteristics of this chip are that it has a DRDYn pin which goes low any time there is a new reading from the chip (so you can precisely time your requests) and that the sensor is located on the bottom of the IC, so that it’s not exposed to dust and other agents that may false the readings. Also, it has an integrated heater that can remove humidity from the sensor.
So I developed a very small breakout board for this chip as well as an Arduino library (yay, my first one! raspberryPi and nodemcu might come next).
HDC1000 temperature and humidity sensor breakout, with Arduino library! - [Link]
by praveen @ circuitstoday.com:
Many guys here were asking for a frequency counter and at last I got enough time to make one. This frequency counter using arduino is based on the UNO version and can count up to 40KHz. A 16×2 LCD display is used for displaying the frequency count. The circuit has minimum external components and directly counts the frequency. Any way the amplitude of the input frequency must not be greater than 5V. If you want to measure signals over than 5V, additional limiting circuits have to be added and i will show it some other time. Now just do it with 5V signals.
Frequency counter using arduino - [Link]
by JohnnieT @ instructables.com:
It’s a cnc using Arduino UNO R3 , GCode Sender and GRBL. The cnc is made of wood thanks to the help of my father. It has taken us many hours to do the mechanical part however the electronic part is faster to do, but is very gratifying. I based my project on these videos and I have received much support from the author of the first video.
The total cost of the project is about 450€.
Arduino CNC - [Link]
Helge @ WeatherStation writes:
After some help from wolfmanjm and CosR1, I managed to get a separate Buydisplay based GSL1680 touch panel up’n running on an Arduino Mega (1280) with only minor modifications to wolfmanjms code.
The firmware is an integrated part of the sketch. Instead of using ram, it is put in the flash memory using PROGMEM. Some, to me, special memory magic is used to read the firmware from the sketch flash (Thanks to CosR1). There might be other ways, but I haven’t investigated further. From there it is easy to write the firmware to the GSL1680 though the I2C bus. Initialization of the GSL1680 is also a bit special. It needs some special sequence of operations. I’m not sure if the code is optimal in that regard, but it seems to be stable. Linux-sunxi.org has a wiki with some info. There is even some information on the internal firmware registers here (haven’t verified if this info is correct).
I’ve forked the original wolfmanjm/GSL1680 github repo to hellange/GSL1680 and checked in the modifications needed for Arduino MEGA.
5″ capacitive touch panel with GSL1680 up’n running with Arduino - [Link]
It provides details on: how to make the hardware connections using an FTDI Board or Arduino (with suitable disclaimer); how to communicate with the module; using AT commands to act as a client, server or AP; and, updating the firmware.
The con brought in a shipment of 100 of the modules which sold out extremely quickly and the guide provides a one-stop-shop for how to get started with the modules.
ESP8266 WiFi module quick start guide - [Link]
by MikeArduino @ communities.intel.com:
One might mistakenly think that the Intel® Galileo Gen 2 as only an advanced, more powerful version of Arduino Uno that happens to be layered on top of a Linux system.
There’s actually more to it than that and hopefully, this tutorial will show the bigger and more complex view of the Linux core underneath.
Tutorial on getting started with Intel Galileo Gen2 - [Link]
by electronichamsters @ instructables.com:
A few years ago, I became a dog owner for the first time. I didn’t like leaving Cody in the kennel alone all day. I had a webcam on him, but I couldn’t watch it all day long. What if he was in some kind of distress? What if there was a emergency at the house, like a fire?
I wanted some way of getting an immediate email notification when he barks, or when something bad happens. So reading lead to tinkering, and tinkering eventually lead to making this full blown home automation system based on open source hardware (Arduino) and open source software (OpenHAB). I know I know, yet another “Arduino Home Automation” project, right? But I promise I’m not going to turn on a light from a smart phone. I’m more focused on extensive networked sensors, timely alerts, and aesthetically appealing presentation of events.
Uber Home Automation w/ Arduino & Pi - [Link]