Sunbright Alarm Clock - Design

Sunbright Alarm Clock - Design

The idea is simple: a set amount of time before your alarm is due to go off the lights in the room are gradually raised to simulate dawn, thus leading to a more gentle awakening than the typical blaring alarm clock buzzer. In an ideal situation you would wake up just before your scheduled alarm time.

I saw this project on Hackaday which prompted action!

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ADC and PWM basics on the ATtiny13

ADC and PWM basics on the ATtiny13

I want to use an ATtiny13 to control the brightness of an LED light source (as a controller for this) and therefore need to control both the ADC input and the PWM output. This example is very simple, but will hopefully serve as a jumping off point for people new to the ADC and PWM systems in AVR microcontrollers.

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Upgrading a microscope to LED illumination

Upgrading a microscope to LED illumination

I recently managed to save a big, heavy binocular microscope from being rather unceremoniously turned into scrap metal. After spending a fair while looking at anything we could put our hands on underneath its' lenses I turned to changing the dim yellow tungsten light bulb to something with a bit more oomph - a high brightness LED.

The eventual aim is to attach a camera to it, so more light is always better.

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Giving BodyParts3D objects useful names in Blender

Giving BodyParts3D objects useful names in Blender

The BodyParts3D database from the Life Science Database Archive is brilliant - a couple of thousand separate meshes of organs and anatomical parts that add up to a male human body. There is a downside, and that is that the object files are named rather obtusely as FJ1252.obj and FJ1702M.obj. I found out about it from this forum thread at Blender Artists, and the basic Blender actions are based on those proposed by PietPW.

The main reason for writing this post is that PietPW's method of renaming the files relies on an older dataset, as the latest release has changed formats from a straight "this is what this file depicts" to a more obscure separate database of files that describe the relationship of these files to an anatomical 'tree'.

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Shooting a camera through a pneumatic transport system

Shooting a camera through a pneumatic transport system

A few months ago I was offered a pod from an old pneumatic tube system - the kind of thing that transports samples and internal mail around hospitals and large office blocks. I was pleased when I was allowed to shoot a camera through an old unused section.

For those who are unfamiliar with the system, a series of interconnected tubes use pressurized air to suck and blow containers through various parts of the building, using rotary junctions and physical hubs to move between various 'networks'.

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