Weekend Project: Tablet Stand

I added a new tablet to the family, and thought that it was about time I came up with a stand so I could use them while typing. So with a bit of scrap wood and a few quick cuts I was able to whip one up in no time. It works great for both the Galaxy Note 10.1 and for the Nook Color. The stand is only about 4.5 in long and very lightweight. Here's the story;

Here's the basic design. A few slivers of plywood held

together with glue and dowels.

The side-view. You can see the design sketches below.

Making sure that it will fit the tablet.

A layer of spray-paint goes a long way

You can see it holds the Note 10.1 nicely.

It also works great for the nook!

Here's the side view, and you can see that it holds

the nook comfortably in landscape and in portrait mode.

The Galaxy Note 10.1 barely fits is portrait mode too.

Weekend project: Bluetooth Radio

Perhaps you may have seen these bluetooth powered speakers popping up around. Well, I had an old bluetooth headset that was sitting in my 'junk electronics' drawer, and I thought it would be fun to turn it into the receiving end of a bluetooth speaker system for the house. You may need an app such as btmono to play music to a mono (as opposed to stereo) headset.

The parts we'll need. Headset, audio jack, and splitter.

After trying to remove the case for an hour,

it was simpler to dremel off the speaker section

and get at the wires that way.

Testing it out with the audio jack.

Finally, I've hot-glued everything in. I would recommend

hot-gluing over the exposed leads so you don't get

speaker pop when plugging in the speakers.

Weekend Project - Photopopper

One of the current geek things to do is see what you can fit in an altoids tin. One of my friends had a similar tin that I was playing with awhile ago. He saw me playing around with it and challenged me to come up with something.

Well I've failed. It doesn't fit in the tin.

But it was still great fun to work on! And it's the perfect weekend project.

So what am I talking about? It's Solarbotics BEAM photopopper photovore. That's a mouthful, so let's break it down; it's a robot that follows the light. I got the design from the Solarbotics page, where you can buy a kit from them, although I just purchased the components on my own, as I wanted to fit them in the tin. 

Here's the picto-breakdown - scroll all the way to the bottom for a video!

It's best to build the circuit on a prototyping board to
make sure everything works. If not, it's easy to fix here.

Once it's working, you can solider it together.

Finally, we use some double-sided tape to attach the shell.

The tabasco robot! It's hard shell protects
it from many natural predators.

Cool Flower

Sometimes nature does the unexpected.

After a week in a vase, we had some flower stems decide to curl back in four directions:

Mobile

Everyone picks up seashells from the seashore, right? Well we did to thinking we would make a mobile out of them. Fast forward two years and we finally got around to making it ;)

The easiest way of finding the balanced midpoint is to put each of your index fingers at opposite edges of the stick, then move them inward. Volia! They arrive together at the center of mass.

Just a nicely balanced collection of seashells.

And the close-up.

'Origami' Bookshelf

If you haven't seen Frank Lloyd Wright's Origami chair, you should. Legend says each chair comes from a single sheet of 8x10' plywood cut and remade into a chair. Needless to say I wanted one as soon as I saw one. Unfortunately they're not for sale :(

So I did what I could. Inspired from the chair I decided to start a bit smaller with my own 'origami bookshelf' from some leftover wood.

We'll start by slicing the old piece of leftover wood in half. One half goes to the shelves and the other to the legs. Then we'll cut slots halfway through so they can slot into each other. There are some small adjustments I had to make as I went on, but I'll let the pictures speak for me.

The leftover wood piece.

Marking up the slots.

After the cuts.

Checking that everything fits.

The pieces individually.

Assembled lying down.

Assembled standing up. There is a bit of a tilt to the setup, 

resulting in a leg being trimmed towards the end.

Also I thought that the second shelf angled with respect to

the first and to the ground.

Prepping for the stain.

Turns out stain can polymerize if
left exposed to air and alone.

Done with staining, you may have noticed an extra piece.

The extra piece helps maintain the shelf separation.

T60 Screen Power Inverter Replacement

Sometimes you fix things, and they don't turn out fixed. This is one of those stories.

I have this old Thinkpad T60 (circa 2004 - they built these things well), where windows finally gave up the ghost on this fellow, so I put on Ubuntu, but it consistently had issues with the screen - after a few minutes of operation the backlight would go out. I thought that the screen power inverter might be the problem.

It wasn't, but it was still a fun replacement, so I thought I would share:

Equipment :

• laptop (unplugged and with battery removed)
• Screwdrivers
• new power inverter

Screw locations - four on the front and a few on the sides.
They're hidden behind small black covers, you can use a flat
screwdriver to pry them off.

Here we are with the screws removed, you can pull up on the
screen-front to reveal the power inverter - the green and
white strip at the bottom.

It pulls right out and you can swap it with the new one.
One side connects with the screen, and the other with the chassis
Reverse steps to get back to working laptop.