The Internet of Things is here in full force. The first step when adding to the Internet of Things is obvious, adding a web interface to your project. [Jaspreet] wrote in to tell us about his project that adds a web interface to his MSP430 based project, making it easy to add any project to the internet of things.
Creating a web interface can be a bit overwhelming if you have never done it before. This project makes it easy by using a dedicated computer running Linux to handle all of the web related tasks. The LaunchPad simply interfaces with the computer using USB and Python, and the computer hosts the webpage and updates it in real time using Node.js. The result is a very professional looking interface with an impressively responsive display that can control the on-board LEDs, read analog values from the integrated ADC, and stream accelerometer data. Be sure to see it in action after the break!
We could see this project being expanded to run on the Raspberry Pi with a multitude of sensors. What will you add a web interface to next? Home automation? A weather station? Let us know!
Continue reading “Web Interface for the FRAM LaunchPad”
[Babak] created an in-depth tutorial on how he got his BeagleBone Black to control a servo from a web browser.
[Babak] configured a pin on his BeagleBone Black (BBB) as a PWM line and connected it to the control line on a micro hobby servo. The BBB is running a Node.js web server that displays a simple web page to control the servo. The browser sends a WebSocket request to a small WebSocket node server also running on the BBB that then writes the appropriate PWM value to the pin connected to the servo.
The code for node WebSocket server and web server can be found on his GitHub page. There is also a small node library to control PWM lines on the BBB. Though the end result is simple, controlling the servo can be done from any browser that can make a network connection to the BeagleBone Black. Check out the video after the jump for a description and demonstration.
Continue reading “Web Controlled Servo from a BeagleBone Black”
It should come as no surprise your optical mouse contains a very tiny, very low resolution camera. [Franci] decided to take apart one of his old mice and turn that tiny optical sensor into a webcam.
Inside [Franci]’s Logitech RX 250 is an ADNS-5020 optical sensor. This three wire SPI device stuffed into an 8-pin package is a 15×15 pixel grayscale image sensor. [Franci] started this project by bringing out the Arduino and Ethernet shield. After soldering a pull-up resistor to the image sensor’s reset pin, connecting the rest of the circuit was as simple as soldering a few wires to the Arduino.
Video of the mousewebcam in action below.
Continue reading “Your Mouse Is A Terrible Webcam”
On board the Espruino is an ARM Cortex M3 in the form of an STM32 chip, 256kB Flash, 48kB of RAM, and a ton of PWM and ADC pins to go along with 2 SPI ports, 2 I2C ports, and 2 DACs. It’s a very capable piece of hardware, and if you’re looking to build anything, it would be hard to pick a better general purpose dev board.
On board this little… board is an ARM Cortex-M3 running at 180 MHz, 32 Megs of Flash, 32 Megs of SDRAM, and a TI CC3000 WiFi module that we’ve heard so much about. The 16-pin GPIO can connect to other Tessel modules that allow for servos, accelerometers, micro SD cards, and a whole bunch of other sensors for just about any project imaginable.
Aside from having WiFi built in from the get-go, Tessel also has some Arduino compatibility, allowing it to work with existing shields and code. It seems pretty cool, and we can’t wait to get our hands on one when it launches in September.
The Leap Motion is a very cool device, but so far we haven’t seen many applications of interacting with physical devices. [Xavier] wanted to control a cute servo animated desk lamp with his hands, and with the help of a Leap and an Arduino he was able to do just that.
The Leap Motion API has a handy feature that will output all its data over a websocket. It’s a very easy way to transfer hand positions with a minimum amount of overhead, and with just a little bit of Node.js, it’s only two lines of code to connect the Leap to a websocket server.
Video of the build below.
Continue reading “Animating a lamp with the Leap Motion”
In the title of his post [Donald Derek] calls this a Google TV you can build yourself. That’s certainly an over-reach. But the project is still a very impressive smart television built using a Raspberry Pi.
The open source project starts with the Rasbian OS, an RPi version of Debian Linux. Functionality is built up by installing Chromium to display webpages, a script to download YouTube videos, and OMXPlayer to play videos including 1080P HD content. The image above shows the smart phone controller for the system. This is provided by a Node.js configuration that manages communication between the remote and the RPi board.
On the one hand we love that this is open source. On the other, it’s not going to be able to tap into a lot of the content which makes a Google TV so valuable. For instance, you won’t be able to watch Netflix because that service doesn’t work on Linux systems. But you should be able to watch browser-based content like Hulu.