1/12 scale Transform Robot

This isn’t strictly Raspberry Pi-related, though perhaps someone should start building one…

This is a contender for the coolest thing ever – the timeline of development for a real transforming robot-car.

Fast forward to 3:45 for the drop-dead amazing latest version robotics.

BRAVEROBOTICS 1/12 scale Transform Robot Version1~7.2 History – YouTube.

Some more footage here (actually, better footage!)


 

Leeds Hack hosts the first Raspberry Pi-based hack day

The first free Hackday based on the Raspberry Pi has taken place in Leeds, hosted by CPC electronics.

Taking Place in the heart of Leeds on December 1st and running through the night for 24 hours was the first free Raspberry Pi Hackday. A Hackday/Hackathon is an event, where team of coders, hobbiests, engineers and enthusiasts get together and are given 24 hours to create something cool in software, hardware, design or implementation. This particular Hackday was special, as it was the first around projects involving the Raspberry Pi.

More information at Tech Fruits: CPCPiHack @ Leeds Hack.

Frustration with the MCP3008 ADC

I don’t often vent my spleen on my blog. This time, however, my frustration has boiled over. I’ve been trying to get an analog to digital converter working with my Pi. Now, I should say going into this I’m not feeling my best at the moment, and my patience is more than a little thin.

Over the past few weeks, I’ve had problems with my 7″ LCD screen, with my 16×2 LCD module, my ultrasonic distance sensor… and now it’s the turn of the ADC.

I was trying to do this tutorial:

Overview | Analog Inputs for Raspberry Pi Using the MCP3008 | Adafruit Learning System.

and failed miserably. Analog levels are just not being reported. I get the occasional fluctuation, but it doesn’t seem to be reading the analog-ness of the potentiometer. It’ll go to 100%, then to zero again. No idea what I’m doing wrong.

Still, I persevered and decided to try Jeremy Blythe’s tutorial that is the same as the Adafruit one by instead using the SPI protocol. I figured I’m using the Occidentalis distro, SPI is enabled, and I’m having no luck with the original. Here’s a link to the tutorial:

http://jeremyblythe.blogspot.co.uk/2012/09/raspberry-pi-hardware-spi-analog-inputs.html

Guess what? I failed again. I’m getting 100% volume all the time. I don’t doubt that both tutorials are accurate and correct, just that my lack of knowledge is probably causing my failure.

Perhaps it’s because I’m using a mini potentiometer rather than one of the blue ones, but surely if I press down on the thing it should do the same? It’s so frustrating.

I’m not a stupid person – but I do feel that I’ve reached the end of my expertise with this simple tutorial. I’m all at sea with electronics, it seems, and I haven’t a clue how to get enough knowledge to make myself proficient enough to do what I want to do.

Rant over!