Increase USB power for Raspberry Pi 2 Model B

I recently bought the Raspberry Pi 2 model B with a Western Digital Elements 1TB harddisk. When I booted the Pi, the USB harddisk makes tiny “clicks” and it seems the harddisk is not getting enough power so I needed to increase the power provided from the USB port.

The network is reached by a USB wifi dongle which also consumed some power. In order to provide enough power to the USB peripherals I bought a 2A power supply. The Pi is going to serve as a media center so I installed the OpenElec image.

Raspberry Pi 2 Model B

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Free key estimation software for DJs

KeyFinder is free open source key estimation software for DJs interested in harmonic and tonal mixing. This is defined by Wikipedia as:

a DJ‘s continuous mix between two pre-recorded tracks that are most often either in the same key, or their keys are relative or in a subdominant or dominant relationship with one another.

The primary goal of harmonic mixing is to create a smooth transition between songs. Songs in the same key do not generate a dissonant tone when mixed. This technique enables DJs to create a harmonious and consonant mashup with any music genre.

Primarily designed for electronic and dance music, it is highly configurable and applicable to many music genres.

KeyFinder screenshot

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Custom phone protector for UAir R10 quadcopter w/ camera mount

After a couple of flights with the UAir R10 quadcopter you want to record your own flights / crashes. I own a compact camera but it has a lens sticking out when turned on. A crash could easily damage the front lens so I decided to work with a more compact device: my smartphone.

I could simply mount the phone to the R10 camera mount, but this leaves the screen unprotected. Therefore I decided to make my own phone protector out of an old air mail envelope.

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Front view

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