miércoles, 15 de septiembre de 2010

Sterilizer

A lot of work have been done and I didn't share it, sorry for that. We changed the ADC from Linear Technology to one from Analog Devices. The one from Linear was adding lots of noise, probably due to the PCB (possibly wasn't desinged correctly) and the one from Analog is working so much better. Of course the PCB also changed.
The GLCD is a little bit different, we are using now one from Newhaven Display and the VHDL code also changed. It's working great and is more efficient now, we managed to reduce the amount of  FPGA's resources used by an almost  20%.
We also add the Pressure sensor, the MPX2200 from freescale, modelled the equations and built the blocks within the FPGA.
The image shows some test we made with a resistive oven using two sensors: the one we built and a reference one.

We also made tests using the pressure sensor, but unfortunately I have no pictures.
Hopefuly, we will install it next wek. Till next time!!