Monday, February 21, 2011

Problems with software PIC

It is quiet here because we are trying to adapt the code of the software of the PIC.
But it is very hard for us, the code is written in C++, and we can't program that...

Hopefully we can tell you soon that we make progress with the code.

Wednesday, February 16, 2011

Testing with V-USB and AVR

The last days/week we were very busy with testing with V-USB and AVR.
We based us on the Powerswitch example:
http://www.obdev.at/products/vusb/powerswitch.html 

And this is our first prototype pcb:


But like you can see, it was very fast soldered with the result that it doesn't work.
So the next prototype need to build:


This time, the pcb works! So We have tested the powerswitch with the commandline software. And this was succesfull.

But afther this, we want to make a graphical software...
First we had a problem with the .dll. After this was fixed we saw that it is
on this moment impossible for us to let this work...

So probably we go use the PIC18F4550.

Monday, February 7, 2011

Our Own USB Interface

Today we have tested with the USB Data Acquisition Card of Elektor (click).
Our previous students, 2 years ago have made this PCB with the application
Ball and Beam. And the PCB was still at school.




















After installing the drivers, we had a error while opening the demo software.
The problem was solved if we open the software as admin.



















When this problem was solved, the PCB doesn't work anymore,
our previous students made a PCB with copper tracks with the thickness of a hair I think.
Soldering a wire and the problem was solved.
After that, we measured al the digital I/O and analog I/O.

This evening , we finished (hopefully) the list with components.
Tomorrow we hope to search how the Demo software works,
and made ourself Demo software.

Wednesday, February 2, 2011

A lot of progress - Prototype

Here we are after a while...
But we were very active...

First, we have coupled all the small circuits to each other to check if it is working.
This worked, but is was on breadbord.
So the next step we have done was drawing the schematic, where everthing is on it.
Al the foregoing circuits that we have maked, were small schematics.
















The next step we have done, was build this circuit on a perfboard. This is also the prototype of the PWM. And the power supply is the power supply that we are going to use in the future for the project... (Adapters).






























The bad quality is because it is filmed with my gsm.
While we have done those test etc, we have make a list with components.
This is almost ready, than can we give it to the school to order.