Fritzing is an open-source hardware initiative that makes electronics accessible as a creative material for anyone. You can easily learn how to build a circuit for you project and also design your own PCB.
From the 433Mhz raw waveform to the arduino or raspberry code to decode this chip sensor.
"A soil moisture sensor (or meter) measures the water content in soil. With it, you can easily tell when the soil needs more water or when it’s over-watered. The simplest soil sensor doesn’t even need battery. For example, this Rapitest Soil Meter, which I bought a few years ago, consists of simply a probe and a volt meter panel. The way it works is by using the Galvanic cell principle — essentially how a lemon battery or potato battery works. The probe is made of two electrodes of different metals. In the left picture below, the tip (dark silver color) is made of one type of metal (likely zinc), and the rest of the probe is made of another type of metal (likely copper, steel, or aluminum). When the probe is inserted into soil, it generates a small amount of voltage (typically a few hundred milli-volts to a couple of volts). The more water in the soil, the higher the generated voltage. This meter is pretty easy to use manually; but to automate the reading you need a microcontroller to read the value."
LittleBits is the easiest and most extensive way to learn and prototype with electronics. We are making hardware limitless with our award-winning, ever-growing library of electronic modules, ranging from the very simple (power, sensors, LED) to the very complex (wireless, programmable).
HomeKit is a new framework for communicating with and controlling connected devices in a user’s home. Apps can enable users to discover devices in their home and configure them, or you can create actions to control those devices. Users can group actions together and trigger them using Siri.
If your app is primarily designed to provide home configuration or home automation services such as turning on a light or opening a garage door, learn more about the HomeKit APIs and get started with the iOS 8 SDK andXcode 6 beta.
If you are interested in creating a HomeKit accessory, apply to the MFi Program. To learn more about theMFi Program, read the FAQs.
‘Thread’ is a new IP-based wireless networking protocol for the smart home. Nest and Samsung are Thread Group founding members along with Yale Security, Silicon Labs, Freescale Semiconductor, Big Ass Fans and ARM.
We took our LCD Keypad Shield, and added our Weather Shield that we used with the web server project. Now we have temperature, humidity, pressure, and more displaying on the LCD. Just press the buttons to see the various readings.
"OK, but how do I control 12 LED strips independently? And not just on/off, but also in brightness. I didn’t like the idea of using 4 RGB LED controllers, so I started searching for a >12 channel LED controller. After some days I finally got the inspiration I needed – a JeeLabs Dimmer Plug! The Dimmer Plug uses a PCA9635 IC to drive and dim up to 16 LEDs independently.. that should do it! The Dimmer Plug uses I2C to communicate with the outside world, so that shouldn’t be a problem either."
"The things I want to do with the LED strips involves sending certain ‘patterns’ to the LED driver at specific intervals. Will the Raspberry be able to do this in a reliable way? I don’t know yet, cause right now the Raspberry which I’m using to test this LED driver, has (almost) nothing else to do than run a single Node app that uses this LED driver. But what if more drivers are running, all consuming CPU cycles, or what if the OS feels it’s time to do something else for a change, just when the LED strips need to be adjusted in brightness? We’ll see.. maybe not now, but too much delay or other irregularities should be visible right away, so I decided to just wait and see how this turns out in practice."
"after my NAS was fixed, I could continue working on some components I need for our staircase renovation. One of those components is the Velleman MK120 Infrared Light Barrier.
But I needed some proof of how well (or not) these light barriers would work, so I did some tests with the soldered kit on my desk. Well, with about 70 cm. between the transmitter and receiver, even moving a forefinger (or cat paws..) through the beam triggered the buzzer. I also did some test to let the IR beams bounce on nearby objects and that did have an effect on detecting objects, but I hope I can minimize that effect."
"A small update. As you can see the stairs are almost done. The banisters still need to be painted and some minor ‘errors‘ need to be resolved, but the major part of the things I’m not good at are done!"
"The sketch for the Arduino Ethernet is also progressing nicely – MQTT is operational, i2c is working fine too and I haven’t seen any glitches which I did see when the Raspberry Pi was controlling the LED driver. So all that’s left to do is connecting the light barriers as inputs to the Arduino so that the sketch knows when someone’s walking up or down the stairs."
"This post should have been made 6 weeks ago or so, but I just couldn’t find the time with all the other things I wanted (and some which I just had) to do. But this week I realized that delaying this post any longer would probably mean it would never be made, so I sat down, read my last post about this project to see where I had ended."
In this post I will describe how I send data and receive instruction from an Arduino to A Raspberry PI. As this way to communicate is a for home monitoring, I will take care of Arduino Sketch consumption.
Arduino user DavidMJBos sent us a project using Node js server on the Arduino Yún to control the lights, heating and some other sensors in the office of Appsaloon, the company where he’s doing an internship.They already use Node.js for a lot of things and some of them are pretty cool with it.That’s how they did it:
In this post I will describe what is the best way to power a Arduino according to your needs. Of course according to your needs, the way you power your Arduino system, is very important. If you want to make a system connected to a wall plug it is much easier than running an autonomous system on battery
More and more open-source projects in home automation these days are “connected” in some way. For example, you want to build a single wireless motion sensor based on Arduino. Or you want to build a full home automation system with many modules communicating together and with a central node. Or you just want a small …
One nice thing to have in any home automation or alarm system is a camera to see what’s going on remotely. Of course, such solutions already exists, and you even have WiFi cameras that you can buy for under $50.
Controlling relays is a central piece in any home automation system. With them, you can easily switch on and off any electrical device in your home, like lights. This project is the second part of a series showing you how to use Arduino & the CC3000 WiFi chip for home automation purposes. The first part was dedicated to how to read data wirelessly from a temperature & humidity sensor.
In order to create ambilight effect for any video signal, the key thing is to buy the right video grabber. When you see that someone installed “easycap” grabber you may suspect that when you buy one you will have the setup that is ready to use. This is very wrong assumption… :) unless you are lucky – and this is why…
Installation and testing of the grabber consists of several steps:
You need to have specific version of Raspbian in order to install and use video grabbers. For utv-007 the one from 2013-07-26 worked the best. For stk1160 the one from September’13. Download it and dump to sd card.
Configure raspbian by extending the partitions (through raspi-config)