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]
It is created with the same concept as RepRap, using 3D printed parts and some easy to find “vitamins” (non printed hardware).
I tried to make it as cheap as possible, by using cheap electronics and a “low power” laser (a laser diode).
The X/Y working area is fully customisable and the max working object height is up to 50-60mm.
The cutter/engraver basically uses the 3D printed parts, M8 and M3 size hardware (rods, nuts,washers and bolts), some small bearings and GT2 pulleys and belts. I got most of the parts from my “old” RepRap printer.
The X/Y working area is fully customsable by changing the length of the 8mm rods.
The electronics uses an Arduino UNO with a cheap CNC shield and two Pololu based stepper drivers to drive two NEMA17 stepper motors.
3dpBurner – A 3D printed laser cutter/engraver - [Link]
by Rui Santos:
In this project you’re going to create a simple HTTP client with an ESP8266 WiFi module. Having your ESP8266 connected to your network, it requests the current Bitcoin price. This is an example on how to retrieve data from the web.
First, flash your ESP8266 module with NodeMCU
NodeMCU is a firmware that allows you to program the ESP8266 modules with LUA script. And you’ll find it very similar to the way you program your Arduino. With just a few lines of code you can establish a WiFi connection, control the ESP8266 GPIOs, turning your ESP8266 into a web server and a lot more.
Retrieving Bitcoin Price Using ESP8266 WiFi Module - [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]