Raspberry Pi category

Raspberry Pi Security System

MWAGNER @ hackmypi.com build a security camera based on Raspberry Pi:

A family member asked me to put a camera in our garage recently, and immediately I decided to use a Pi Zero. Back when I was interviewing for my current job, I was dabbling with the idea of making a wireless, battery powered IP camera that I was going to attach to my dog, and get some cool footage of my dog running around.

Raspberry Pi Security System – [Link]

PiSound – Audio Card For Raspberry Pi

by blokas.io:

pisound is an ultra-low latency high-quality soundcard and MIDI interface specially designed for Raspberry Pi pocket computers. Equipped with 192kHz 24-bit Stereo Input and Output driven by the legendary Burr-Brown chips, DIN-5 MIDI Input and Output ports, user-customizable button and bundled software tools, this little board will bring your audio projects to a whole new level!

PiSound – Audio Card For Raspberry Pi – [Link]

How to Setup WiFi on the Raspberry Pi

In this video, Circuit Basics will show us how to configure a WiFi dongle and establish a wireless connection for your Raspberry Pi. This is useful if you don’t wish to connect your Raspberry Pi to your network with an Ethernet cable.

How to Setup WiFi on the Raspberry Pi [Link]

Jump Over The Limits of ARM With ExaGear Desktop

While the most of Linux programs are compiled to run on Intel x86 processors, the virtualization softwares appear to give the ability to run Intel x86 application on ARM-based Mini PC such as Raspberry Pi.

In this way, Eltechs, a high-tech startup company, had produced a new binary translator called “ExaGear Desktop”. It runs applications for the conventional desktop and server x86 processors on energy-efficient ARM CPU without recompilation.

ExaGear Desktop creates a second system known as the ‘guest’ system. Once installed, you can switch between the guest and your regular (‘host’) system using the ExaGear and exit commands. Inside the guest system, apt-get and dpkg are used to install Intel x86 software. The guest system is a transparent operation so there is no difference between running x86 applications on x86-based or ARM-based platform. It also gives you the ability to run Windows applications by installing Wine.

ExaGear is compatible with many of ARM-based Mini PCs such as Raspberry Pi 1, Raspberry Pi 2, ODROID, CubieBoard, CuBox, Utilite, Jetson TK1, Wandboard, Banana Pi etc. It also can run on Chromebook with Linux.

Compared with QEMU, another open-source virtualization software, ExaGear is  5 time faster and has  much better performance with CPU and memory as the benchmark results shown when running on Raspberry Pi 2. You can see the benchmarking details and results here.

ExaGear is available for ordering through the official website with a price range between $16.45 and $56.45 according to the hardware used. You can find more information at the product page. And it may be useful to take a look at this review.

Zero W, New €10 Raspberry Pi with WLAN and Bluetooth

Five years ago (on 29 February 2012, to be exact) the original Raspberry Pi was unveiled – on this celebrated first day the available stock was sold out within a few minutes, more than 100,000 boards were ordered and the Farnell and RS Components web stores where down for while because of the high demand…
To celebrate this fifth anniversary the Raspberry Pi Foundation introduces a new product: the Raspberry Pi Zero W, that is, the Raspberry Pi Zero complete with WLAN and Bluetooth. The bad new is that this version costs twice as much as the original Zero, but the good news is that it is nevertheless available for only $10 (without accessories).


The Zero was launched in November of 2015 and has since then acquired a camera connector; these days you could hardly imagine anything or contains a Zero – from miniature fruit machines tot electric skate boards.
A disadvantage of the original Zero was the limited connectivity: the only USB port was often used for a wireless dongle; for connecting peripherals such as a keyboard, mouse and network adapter a USB hub was required, which often cost more than the Zero itself.
By integrating the Cypress CYW43438 on the board this problem is solved for the Zero W: this is the same chip that on the RPi 3 model B provides the 820.11n WLAN and Bluetooth 4.0 connectivity. Listing all the features of the Zero W:

  • 1 GHz single-core CPU
  • 512 MB RAM
  • mini HDMI port
  • micro-USB On-The-Go port
  • micro USB power
  • HAT-compatibele 40-pin header
  • headers for composite video and reset
  • CSI camera connector
  • 802.11n WLAN
  • Bluetooth 4.0

The Zero W is accompanied by an ‘official’ enclosure.
This has three interchangeable lids: a closed lid, a lid with openings for the GPIOs, and a lid with opening and attachment facility for a camera.

Source: Elektor

Anyone Can Build A Robot Arm With MeArm Pi

Mime Industries launches Kickstarter campaign to fund their Raspberry Pi powered robot arm kit that’s simple enough for kids to build.

Mime Industries launched a crowdfunding campaign to fund the production of the world’s first robot arm kit for the Raspberry Pi. Designed to be easy to assemble and not requiring extensive knowledge of electronics, the MeArm Pi STEM kit helps kids and adults learn robotics and teaches them how to code.

Created by Ben Pirt of Mirobot and Ben Gray of MeArm, this is their fourth overfunded technology campaign and is based on the original MeArm, launched back in 2014. “We believe in helping children to have fun whilst learning about technology and the MeArm Pi is completely designed around that goal” said Ben Pirt. “Our products are simple to build and can be easily understood. Meaning you can use them to learn whilst playing, adding your own imagination to make something great”.

The MeArm Pi integrates smoothly with the Raspberry Pi, the ubiquitous educational computing platform. The kit uses a Pi HAT (a plug-on board that fits on the computer) with on-board joysticks for control. MeArm Pi is made from plastic parts for the structure, screws and 4 metal gear servos in addition to the Pi HAT. It can be programmed in Python, Scratch, Java and many other programming languages.

The MeArm Pi campaign launched on the popular crowdfunding site Kickstarter on February 7 2017 and runs until March 9 2017 with a goal of £10,000 (Approx $12,400 USD). All early birds are sold out, rewards include the standard MeArm Pi Kit of £60 (Approx $75 USD) which includes a robotic arm. All kits deliver free worldwide.

Check out the campaign video:

 

Raspberry Pi I2C LCD Set Up and Programming

In this video Circuit Basics show us how to use I2C to connect an LCD to the Raspberry Pi. After showing you how to connect the LCD to the Pi with a PCF8574 (http://www.circuitbasics.com/pj6v), they show you how to program it. First I’ll cover the basic stuff like printing text to the screen, clearing the screen, blinking text, and positioning text. Then I’ll go into more advanced stuff like scrolling text, printing data from a sensor, turning on and off the cursor, and printing custom characters.

Raspberry Pi I2C LCD Set Up and Programming [Link]

iSwitchPi Adds an Intelligent Power Switch to Your Raspberry Pi

by Peter Boxler :

Native Raspberry Pi does not have an On/Off switch and there is no easy way to shutdown the Pi while keeping the filesystem intact. This Intelligent Power Switch allows just that: Power-On the Pi by pressing a pushbutton and also properly Power-Off the Pi with another press on the same button. The intelligence is provided by a program running in an AVR MCU ATtiny44. This C-program implements a Finite State Machine in the MCU. A small Python script is running in the Pi itself. Just one GPIO-Pin is used for two-way communication. In addition, a variable frequency square wave is available for externally interrupting the Pi.

iSwitchPi Adds an Intelligent Power Switch to Your Raspberry Pi – [Link]

Explanation of the Components on a Raspberry Pi

In this video, Circuit Basics unbox a new Raspberry Pi B+ and show you the main components on the board. It’s a good primer to watch before you connect it to a monitor, keyboard, or router for the first time.

Explanation of the Components on a Raspberry Pi [Link]

How to Write and Run a C Program on the Raspberry Pi

In this tutorial, circuitbasics.com discuss what a C program is, what C programming is used for, and finally, how to write and run a C program on the Raspberry Pi.

The C programming language is one of the most widely used programming languages of all time. It is computationally faster and more powerful than Python. C is a middle level programming language because of its low level of abstraction to assembly language.

How to Write and Run a C Program on the Raspberry Pi – [Link]