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Dylan Landry said...
Dear Andrew, Dr. Allen and Sylvie,
If we mount the CO2 sensor so it does not connect with the stamp and only the MAWD, I believe that the only way we could collect data is in the raw form (in Millivolts).. If it is not connected to the stamp which contains the micro-controller, how will we be able to upload a formula to convert the data?
Mr. Kibler said...
So do you think the BS2e stamp will have enough memory for the CO2 sensor program and all the other programs...? I just checked UPS and it arrives tomorrow!
Do you think we can replace the BS2 with the BS2e without having to write a completely new program? At the very least you will have to change "BS2" to "BS2e" at the top of the program so the program recognizes the new stamp. Yes.
Finally, we need to find a sample/ prototype CO2 sensor program right away.
Keep up the good dialogue,
Sean from ARLISS-NH said...
I do not think that we should use the CO sample code on the CO2 sensor beacuse it was made for the CO sensor. We should use the CO2 sample code[noparse][[/noparse]if there is one] beacuse it is made for the CO2 sensor. Also when you used it last time with the COsensor it smoked and I don't really think we want that to happen again.
Also, where do I find the CO2 schematics. For some reason I didn't put them in my binder
Dylan Landry said...
Justin and Mr. Kibler,
In terms of memory of the BS2 we do not have enough space, but in physical terms, yes. Andrew consulted someone on this matter a little bit ago in the forums. And so far Justin, you know how our searches have been going for sample code so far. Not well. We may have to resort to the CO code for a test. We could tomorrow in class consult the two documentations to see if they are similar. Andrew spoke with Parallax support and the problem with the CO sensor sample code has to be either a piece that we edited by accident or a problem with the wiring for they and others have gotten it to work with the code supplied. I will try to make a game plan for tomorrow so we don't have to spend time on," What we are going to work on".
P.S. I was not able to get around to the questions you posted Mr. Kibler. I am sorry for this inconvenience.. I have been devoting my time to these recently posted questions. And to add to that, I got home late today. Maybe we could do a Questions and Answers session in advisory to test our current knowledge on the questions.
Dave Andreae said...
There isn't a sample code due to the fact that it requires calibration depending on the gas levels. The sensor is basically a switch that is activated depending on the level of gas that the sensor is calibrated for. If you have any more questions please feel free to contact us.
QUESTION: This sensor is based on a NASICON substrate. Google that and tell what the acronym, "NASICON" stands for.
ANSWER) It is an acronym for "Sodium Super-ionic Conductor."that are used as coatings that are deposited on rotating molecules that enzyms act apon by co-sputtering with certian chemicals to ultimately create a chemical reaction.
Mark in NH said...
Tracy and Paul, where you suggest we go from here? What direction; what's next? I'm assuming that the CO2 sensor is up and running correctly...
Mike NH said...
QUESTION·2 from Paul:
How will you use the CO2 sensor to measure the CO2 level?
ANSWER 2: When it reacts with the NASICON material, the CO2 sensor and converts CO2 into a small electric current through a chemical reaction (we believe. Is this correct?) The electric current (mV) is amplified (buffered) and then converted into numbers (CO2 in ppm.) Is this correct?
HIGH 4 ' turn on the heater.
DEBUG BIN1 IN3 ' display the alarm status