Updating BlueZ on Raspberry Pi (5.43 to 5.48)

This post shows how to update BlueZ from 5.43 (the default version comes with Raspbian Stretch November 2017 version) to 5.48 (the latest as of 2/14/2018) on Raspberry Pi. According to the release notes [1], many issues (especially GATT related issues) have been fixed and also, Advertising Manager API, which was previously marked as experimental, is now stable… Continue reading “Updating BlueZ on Raspberry Pi (5.43 to 5.48)”

Deploying existing Django App to Heroku

Heroku’s free plan is great for experimenting/prototyping cloud applications. This post shows the steps to deploy existing Django project to Heroku cloud platform using Windows host. As an example, I’ll use this django app from GitHub and deploy it to Heroku. Here is the list of contents of this post. Contents – Steps 1. Setup Python… Continue reading “Deploying existing Django App to Heroku”

Changing Screen Resolution of Mac OS VirtualBox Guest

The default screen resolution for Mac OS X VirtualBox Guest is 1024×768. Below shows how to change the screen resolution of Mac OS VirtualBox guest running on Windows 10.     Steps 1. Open “Command Prompt”. (press Win + x and select “Command Prompt”) 2. Navigate to VirtualBox folder in which “VBoxManage.exe” resides. e.g.)

3.… Continue reading “Changing Screen Resolution of Mac OS VirtualBox Guest”

Setting Path Environment Variable on Windows 10

The steps below shows how to set a file/folder path to the ‘Path’ System Environment variable on Windows 10.     Steps 1. Right-click on Windows start menu icon at the bottom-left corner of the desktop, then select “System”   2. Click on “Advanced system settings” on left side of the “System” window. 3. Click… Continue reading “Setting Path Environment Variable on Windows 10”

Enabling Webcam in VirtualBox Guest OS on Windows Host

This post shows steps to enable webcams in a VirtualBox guest OS on Windows host. OS/software and the version I used are below. I tested it with Microsoft Surface Pro 4 and Dell Precision 3510. Host: Windows 10 running VirtualBox 5.2.6. Guest: Ubuntu Linux 16.04.03 / Mac OS X High Sierra   Here is the steps. Steps 1. Install ‘Oracle… Continue reading “Enabling Webcam in VirtualBox Guest OS on Windows Host”