Tag Archives: pi

Streaming Video with the Raspberry Pi Zero W & Pi Camera

IR-CUT Camera Module
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I needed a really tiny yet cheap camera so I thought of the Raspberry Pi Camera module. The Version 2 Camera Module does 8MP with good quality, although a 5MP  IR-Cut Camera better suited my needs.

About the IR-CUT Camera

The IR-CUT Camera works on Normal Mode by default. There are two ways to toggle between Normal Mode and Night-vision Mode.

1. By editing the config.txt<code> file:

and append:

exit with save and restart your Pi then the camera will work on Night-vision Mode.

Run a Program On Your Raspberry Pi At Startup

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The method that I usually use to run a program on your Raspberry Pi at startup is to use the file rc.local. In order to have a command or program run when the Pi boots, you can add commands to the rc.local file. This is especially useful if you want to power up your Pi in headless mode (that is without a connected monitor), and have it run a program without configuration or a manual start.

Editing rc.local

On your Pi, edit the file /etc/rc.local using the editor of your choice. You must edit it with root permissions:

Add commands to execute the python program, preferably using absolute referencing of the file location (complete file path are preferred). Be sure to leave the line exit 0 at the end, then save the file and exit. In nano, to exit, type Ctrl-x, and then Y.

Make a “Safe Shutdown” Button for Raspberry Pi

Shutdown Button
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Pulling the power to your Raspberry Pi can cause image corruptions & other issues that can damage your Pi! In this article, we will create a small push button that will work as a ‘Safe-Shutdown’ option. We’ll connect it to our Raspberry Pi using the GPIO pins and some jumper wires, and with a few lines of code, we will have our own power switch!

First, we are going to look at a simple way to wire a button to the Pi GPIO connector. We will then write a python script that will shut down the Pi safely. The final step will be to setup the Pi so that the button will work all the time. Let’s Get started!

What you will need:

  • Raspberry Pi B+ (Any Pi will work, Just make sure you check the GPIO pins)
  • Tactile Switches
  • Female/Male Extension Jumper Wire Packs
  • Solderless Breadboards

THE CIRCUIT

To do this we will wire the button to GPIO Pin 26(Yellow wire) and to ground (Green wire). This configuration is called an Active Low button, this means that when the button is pushed it will have no voltage or be logic low. The Pi has pull-up resistors on its GPIO pins so wiring active low mean we do not need to add an external resistor.

Make a Raspberry Pi into a Anonymizing ‘TOR’ Proxy!

Tor + Onion + Raspberry Pi
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TOR: The Onion Router is software that enables you to use the internet anonymously. By setting up TOR on a Raspberry Pi you can create a network router that scrambles all of your internet connection.

Turning a Raspberry Pi into a TOR Router has suddenly become much more appealing with Governments changing laws enabling ISPs to track customer internet usage, and selling on the data to advertising companies.

Use a Raspberry Pi to set up a TOR Network Router. I choose a Raspberry Pi 3 specifically because it has built-in wireless networking (the Pi Zero W would work well in this regard too).

The Raspberry Pi connects to the TOR network. All you have to do is then connect the Raspberry Pi to your broadband network, and connect your device to the Raspberry Pi.

Raspberry Pi as a Hotspot/Access Point using ‘DHCP’

Raspberry Pi as Wireless Access Point
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The Raspberry Pi can be used as a wireless access point, running a standalone network. This can be done using the inbuilt wireless features of the Raspberry Pi and even the Raspberry Pi ‘Zero W’, or by using a suitable USB wireless dongle that supports access points.

Note that this documentation was tested on a Raspberry Pi 3, and it is possible that some USB dongles may need slight changes to their settings. If you are having trouble with a USB wireless dongle, please check the forums.

In order to work as an access point, the Raspberry Pi will need to have access point software installed, along with DHCP server software to provide connecting devices with a network address. Ensure that your Raspberry Pi is using an up-to-date version of Raspbian is “Stretch“, or better (e.g. 2018-06-27-raspbian-stretch-lite.img).

Using PlayStation3 Controllers with the Raspberry Pi

Controller-Joystick-PS3
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If you have ever tried to utilize a PlayStation controller with the Raspberry Pi, you may have found it’s not very simple to do. The Raspberry Pi PlayStation controller guide will walk you through the process of setting up and connecting both PlayStation3 controllers and PlayStation4 controllers.
For PlayStation3 (PS3) controllers,I show you how to install the Six-pair Software and utilize it to set up your PS3 controller so it can connect to whatever Bluetooth device you are using on your Raspberry Pi.

In this PS4 controller tutorial we walk you through the process of pairing it with the Raspberry Pi’s Bluetooth and also offer alternative solutions if your controller doesn’t work with the standard Bluetooth stack. You can also set up Xbox controllers on the Raspberry Pi, as well as several other types of game controllers.

Setting up controllers is the perfect way to have your Pi ready to play some games. You might also be interested in using the controllers in other Raspberry Pi projects that make use of a gamepad.

Connecting Wiimote Controllers to the Raspberry Pi

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In this Raspberry Pi Wiimote controllers guide, we will walk you through the process of setting up a Wiimote on your Raspberry Pi and show you how to setup both cwiid and wminput.
Utilizing Wiimote controllers on the Raspberry Pi can be painful to deal with due to its handling of the Bluetooth stack. While they run over standard Bluetooth, their actual functionality is not picked up as a conventional joystick device like Xbox controllers and PlayStation controllers.

Instead to support the full functionality of Wiimote controllers in a way that most applications can support we must utilize two pieces of software.

These being cwiid and wminput. One acts as a library that interprets the Wiimotes actions into joystick actions, the other being somewhat of a driver that creates an input device that applications can utilize easily.

Raspberry Pi: Compile VLC Player with Hardware Acceleration

VLC media player
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Thanks to a post on the Raspberry Pi Foundation’s Message Board, where people have detailed the instructions on how to easily compile VLC Media Player with Hardware Acceleration. For this project, you’ll just need a Raspberry Pi and the basic peripherals: a power source, screen, keyboard and mouse, and microSD card (you need all of this to get Raspbian Installed in the first place, anyway).

Before we begin, a quick note for those of you who already have Raspbian, and may have installed VLC Media Player from Raspbian’s repositories: I recommend that you remove that version. You can do so by running the command:

Raspberry Pi “Zero”: HDMI Monitors Has NO SIGNAL

Raspberry Pi Zero
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When connecting a Raspberry Pi ‘Zero’ for the first time to a TV monitor with HDMI, and receive the message: “No Signal”. I tried it on several inputs and cables with no luck. Other devices work fine with the TV, and the cables so there can not be the problem. Then I tried a computer monitor with HDMI, also with no luck. What is happening?

I’ve investigated the problem for a couple of hours, before finding the solution.

The Raspberry Pi ‘Zero’ outputs a relatively weak HDMI Signal. Some devices may not immediately notice the Raspberry Pi ‘Zero’s HDMI Signal, or may not go through the negotiation process.

Connecting ‘Xbox Controllers’ to the Raspberry Pi

Xbox Controller
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If you have ever tried to use an Xbox controller with the Raspberry Pi, you will find very quickly that they do not work correctly right out of the box. In fact to get them working you will be required to install a special driver.

With the newer Xbox One controllers that feature the Bluetooth functionality, you will also find that they will need extra work on top of the driver installation to get them to run. Namely, they are not properly supported by some of the Bluetooth functionality that is switched on by default.

This guide will show you how to get your Xbox Controllers up and running on the Raspberry Pi, while also walking you through how to get the newer Bluetooth enabled controllers to pair successfully on the Pi.

Banish Advertising From Your Whole Network with Pi-Hole

Pi-Hole_admin_interface
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What is Pi-Hole?

Pi-Hole is a Linux network-level advertisement and internet tracker blocking application which acts as a DNS sinkhole (And optionally a DHCP server), intended for use on a private network. It is designed for use on embedded devices with network capability, such as the Raspberry Pi, but can be used on other machines running Linux and cloud implementations.
Pi-Hole has the ability to block traditional website adverts as well as adverts in unconventional places, such as smart TVs and mobile operating system adverts.

The Pi-hole project was created by Jacob Salmela as an “Open Source” alternative to the AdTrap.

Raspberry Pi ‘3 B+’ Review

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A new PI is out, but is it a worth upgrade?

Before moving any further, it’s however important to note that this is not a brand-new product or a radical evolution of our beloved PI, but rather an incremental upgrade. So, if you’re still struggling to decide whether this upgrade is worth it, I’m here to help with some considerations.

Please note that we’re still testing the new Raspberry PI 3 B+, and those considerations are based on official statements of the Foundation, we’ll update this article as soon as our tests are done.

Raspberry PI 3B+

WHAT IS CHANGED

The hardware makeover of the Raspberry PI model 3 B+ covers basically 3 areas:

  • Slightly faster processor
  • Better thermal management
  • Networking

As we will see later, what really matters for us is indirectly related to point number 3: networking. But let’s see in detail all the 3 main upgrade areas.

24-bit, 192KHz Audio for the Raspberry Pi Zero with the pHAT

pHAT DAC for Raspberry Pi Zero
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The pHAT provides a super affordable high-quality DAC for your Raspberry Pi. It pumps out 24-bits at 192KHz from the Raspberry Pi’s I2S interface on its 2×20 pin GPIO header.

Use pHAT DAC to build a tiny, lush-sounding streaming music device, or use it with Scroll pHAT to make a beautiful spectrum analyser!

Features

  • 24-bit audio at 192KHz
  • Line out stereo jack
  • Optional landing for dual RCA phono connector
  • PCM5102A DAC over the Raspberry Pi’s I2S interface
  • pHAT DAC pinout
  • Compatible with Raspberry Pi 3B+, 3, 2, B+, A+, Zero, and Zero W
  • Female header requires soldering



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