Tag Archives: usb

The best Raspberry Pi Case Ever! | single unit raspberry pi case includes power

I have looked at a number of Raspberry Pi cases, they all have one thing in common. They have a box (the raspberry pi itself), a USB cable, and an adapter at a minimum.

I wanted to create a unit which will improve these shortcomings for three main reasons.

  1. To look cleaner, neater,  and safety.
  2. Can be installed on sites where you are completing a security audit, the unit will not come under suspicion because of it looks.
  3. Cooling, performance and the ability to expand hardware inside the unit itself.

I used FreeCAD to design the 3D printable design and a Dremel 3D20 printer to print it.

I have made around three designs which I improved on each time, landing on the one published here.

The print contains a space for a Samsung USB power plug and a section for the USB connector, it contains a grove to allow it to sit firmly in place.

The Raspberry Pi sits on four poles which hold it firmly in place, and also allows you to connect the cat5 connected and four USB ports at the bottom.

I have build three slits on the bottom of the cover and three at the top, this is a clever wait to passively cool the Raspberry Pi. The air inside will heat up and rise, then exit from this top slits. This will then create a suction from the bottom, taking in the cool air. No need for a fan! Test proved to be promising.

I am really pleased with the design and use it at home.

I have plans to make it alot smaller, as you can see from the photos the biggest problems are the size of the adapter and the plug into the Pi itself. I have ordered smaller and cheaper power plugs and some L shaped USB connectors. This will allow me to design the casing to be alot smaller, ill keep you posted.

To make this project happen you need the following

Enjoy!

Review of a 50000mha solar USB Powerbank | testing a solar panel usb powerbank

I have developed an unnatural obsession with powerbanks, I have a large number of them for different purposes.

I decided to start reviewing them to give people information before making a purchase, often these cheap devices are sold with a number of features which may or may not be useful of even work at all.

So ill start off by listing the locations where you can purchase them, and the costs.

So for this experiment ran two tests, one with the unit on its own and another with an external USB Solar panel attached to assist in the charging.

Here are the links and costs to the products.

  • Powerbank 50000mha dual usb with LED – $24.99
  • Solar Panel 6volt 3.5watt – $7.38

01. The first test was conducted in the following way. I put the powerbank in the sun during an overcast day for six hours facing North (10am-4pm). Then I connected it to my phone can checked to see how much charge was given.

Results: 12%

Conclusion. The charge isn’t that much, but its enough to get you out of a sticky situation.

02. The second test was conducted in the same way as test one, but also installing the Solar panel listed above.

Result: 40%

Conclusion: I’m impressed, 40% is decent charge levels for 6hours in the sun.

Overall Conclusion:

Im pleased with this product. I have tested it in the rain, I can confirm its was resistant. Its a tough product, it needs to be if its going to survive in my world.

Powerbank endurance test for Raspberry Pi 3. | testing how long a raspberry pi can be powered via a powerpank

Iv like to test and know how much uptime can be achieved by different powerbank.

I purchased this powerbank case on ebay and then purchased the 18650 3.7v batteries separately.

I have built two powerbank with identical cases but different batteries. 

  • Powerbank – $5.35
  • Batteries 18650 9600mha – $24.80
  • Batteries 18650 6000mha – $22.49

The results?

  • Batteries 18650 9600mha – 23 Hours
  • Batteries 18650 6000mha – 18 Hours

It should also be noted that the Raspberry Pi is online via wifi during the whole test while getting pinged every minute.

Building a weather station Raspberry Pi 3 IOT | Raspberry Pi 3 weather station weewx IOT

I wanted to build a weather station located at my holiday house, functional reasons were to know when it hasn’t rained in a while so I knew if the garden needs watering.

The nerd in me just wants everything to be network enabled.

The components I used,

  1.  Acurite Pro 5-in-1 Color Weather Station with Wind and Rain
  2. Raspberry Pi 3

The setup was very simple and quick to set up!

Lets get started!

After installing the weather station somewhere around your house and switching on the base station. You should now be able to see the weather at the base station, information such as rain, temp, humidity etc should be flowing.

Now connect the base station to the raspberry pi via the USB cable.

SSH onto the raspberry pi, to check if we have connectivity do the following.

When you see the device we have connectivity.

Bus 001 Device 005: ID 24c0:0003

How to configure the server and install the software, in this setup we’ll be using weewx for our communication with the weather station and data gathering.

Then navigate to the raspberry pi IP address through your web browser.

http://192.168.1.1/weewx

How to create a USB Ubuntu live image on OSX | making a bootable Ubuntu USB drive using OSX

How to create a USB bootable Ubuntu ISO on a OSX machine
 
Download your ISO image from the ubuntu site and save it in your downloads directory.
 
First we convert the image with the command below.

Then we must first determine the device path of the USB disk
 
Take note of the path and ever it in the command below

Then we use DD to image the USB disk, command below. Ensure you change the device path.


 

Mobile Flight Control Tower | how to build a mobile flight traffic control tower using linux raspberry pi and a usb dvb-t tv tuner

Although I love the internet, I still want my tech to operate without it. Going forward with this theme I want a mobile Flight Control Tower, as I’m a plane enthusiast and admire these machines and their operations.

Using a Raspberry PI as my platform, the options are limitless. There are internet / app based options for getting flight data feeds like flight radar 24 but as you know, i want to control my tech!

First things first, how on earth are we going to accomplish this?What hardware will be use? How much will it cost? Lets start with our shopping list .

TOTAL: $80.83

This a very cheap project which is a lot of fun. 

 

Lets get started with the howto….

So after you have built the OS on the raspberry pi (Raspbian), ssh onto the machine and execute the following.

Now you will need to edit the following file and enter the following parameters.

and paste.

Now to install the dump1090 application which actually displays the planes on a map.

All done, lets start the application

This will start the application with networking.

Bring up your web browser and point it to http://ipofraspberry:8080/

So now our project is complete, you can see all the planes flying around! But this project is a mobile control tower which means we’ll need a way to view the planes on the go, so i thought I would use a wifi card acting a wireless Access point.

This way, if your in the car and you want to see whats flying ahead, you can just connect with your phone or laptop and take a look.

 

Access Point Setup

Edit the DHCP server config

Uncomment the following three lines

Scroll down to the bottom of the configuration file and enter the following.

Edit the following file

replace

with 

Then edit the interfaces files, have the wifi section looking like this

 

Lets setup the Access point, enter the following.

 

You will notice I connected the driver out.. As far as I know its not needed. You can locate yours if you like and put it in

 

Then edit and change

 

To this

Then edit this

From this

To this

Edit this

vim /etc/sysctl.conf

Uncomment this

net.ipv4.ip_forward=1

Enter the following iptables rules, into the command line

Then save the rules permanently 

Restart the raspberry so that all the changes take affect.

Once restarted navigate to http://19.168.100.1:8080

This is because the WiFi NIC has been given a different IP.

 

Raspberry Pi – Experiment 1 | raspberry pi b powerbank wifi usb dongle power test how long it will last

raspberry_piIm currently working on a personal project to have a raspberry pi operating remotely without mains power on a 24/7 basis.

This has raised a lot of questions about whats required to achieve this task, mainly around solar panels and batteries.

wp-1473652945655.jpgI have found a couple articles around raspberry pi power consumption vs raspberry model. I found working with the theoretical max’s always leads to disappointment.

So this is the first of a series of experiments which will step by step lead us to the figures we need to achieve our objective.

In this first experiment we are connecting a Raspberry Pi B with a USB Wifi dongle purchased on eBay. We are finally using a USB power bank (30,000mha).wp-1473652836299.jpg

I have connected these devices together and written a script on my desktop which will poll the raspberry pi on the network and log the results. I will attached the command used to achieve this, just in case you want to conduct come tests yourself.

wp-1473745008390

After charging the power bank fully, running the raspberry pi lasted for 11hours and 51minutes. So  short of the required 24 hours. Ill be testing different power banks to get an understanding about quality.