zondag 7 september 2014

Milling waves in wood




Milling PCbs

A couple of students from my school asked me to help them make phone chargers that worked from the dynamo of a bicycle. 





(There's still a regulator missing in the last picture, this hadn't been soldered on yet)

dinsdag 24 juni 2014

Motorized bicycle

I put the motor from my longboard on my bike to see if that'd work too. It did! The motor does slip a lot, but it still got me going almost 40km/h.

donderdag 1 mei 2014

Undocumented projects

Some random projects. The last three are crafted by a friend of mine, where I did the programming.








Led rings

For a school project we needed to make up something original to add to an amp we were designing. The thing we choose to design was an led ring to be put around each potentiometer.

The ring will consist of sixteen 3mm leds, controlled by two 74hc595 shift registers. In the final version we will use double gang potentiometers, so we can measure it's position without disturbing the audio signal going through it. Because it has to be really small we will use smd shift registers, and smd resistors. This will probably be a pain to solder, but we'll see how it comes along.


woensdag 1 januari 2014

Controlling lights with a gamecube controller.

I've been searching for a way to connect all my projects / lights together, and control them all from one single microcontroller. I've looked at some different radio frequency transceivers, and I have some on the way from china. 
The main microcontroller however will need some kind of interface, but I couldn't really figure out what I would like to have for this. One option will be a box with some sliders, buttons, and a nice display, but in the meantime I wanted to try to use an old gamecube controller to control the lights!

Luckily someone wrote a very detailed article about the communication protocol of the controllers, which someone else used to write an arduino program that converts gamecube controller signals to N64 signals. With the arduino program as starting point I could easily read the 12 buttons and 6 potentiometers (2 joysticks and the L and R buttons) from the controller, and control an rgb led with it. 




When I receive the rf transceivers I'll see whether it works nicely to control multiple lights with the controller, or that a box with some buttons and a display would be better. If the previous is the case, I'll buy myself a wireless gamecube controller as a remote control for all my projects!