week, I set out to do 2 devices : the LED array and the RGB color output
LED Array countdown/Charlieplexing
created a board using Eagle inspired from Neil's charlieplexing board.
The idea is to add a button to control the display and to make the
display make a countdown from 5 to 1. Something which i found very
useful was the wire functionality instead of route. It helps deal with
those situations when you see a clear way to connect two components but
Eagle won't let you because it want to route through another way.
I programmed it with the solder jumper 2 taken out from fabisp and
using the 9 V battery as a power source. It works fine but for some
reason only works once, I need to disconnect and reconnnect power to
make it work.I'll check with a TA/guru on that.
RGB color coupled with temperature
I wanted to play around with the temperature sensor since i didn't have
a chance to test it earlier. I made a board using Eagle which has both
the thermistor and the RGB light. I wanted it to be red when it was hot
and blue when it was cold.
I am not sure how to program the coupling between the temperature and
the light yet. I need to ask one of the TAs. Neil's code worked fine
and it seemed to work at first but when i try to reprogram it's not
working anymore. I might have fried the diode, i 'll check that using