JSummers 29 research notes and 53 wiki edits | Joined over 5 years ago

I am an associate professor of chemistry at Western Carolina University. I am interested in developing open source hardware and software for environmental monitoring and science education.






Potentiostat Notes 2: Software

by JSummers over 5 years ago | 19 | 4,499 views | 1


Conductivity meter

by JSummers over 5 years ago | 2 | 5,641 views | 1


DataLogger

by JSummers over 5 years ago | 1 | 3,617 views | 1


Potentiostat Notes-1, WheeStat history

by JSummers over 5 years ago | 4 | 5,794 views | 2


SyringePump 2.3

by JSummers over 5 years ago | 5 | 4,255 views | 3


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Comments

Comment Last activity Moderation
"OK, I am making slow, slow progress with GitHub. I put the Energia code for the LaunchPad in the wrong place but you should be able to access it. ..." | Read more » over 4 years ago
"Hi Mark, Glad to hear that you think this will be helpful to you. The GUI was written in Processing and the microcontroller software is in Energia...." | Read more » over 4 years ago
"Hi Sean, Sorry about the delay in getting back to you. I was out of town. I sent Daniel an email asking him for more info and I will look into thi..." | Read more » over 4 years ago
"I think that small commercial spectrometers typically use a collimating lens to get light coming through the slit parallel prior to going through t..." | Read more » over 4 years ago
"Hi Mathew, My guess it that this is going to be a processing issue. My next guess is that there is a problem on line 13 of the Dropdown_Lists tab..." | Read more » over 4 years ago
"Ok. Can you see the port from Energia? That will tell us whether it is a mac / energia issue or a mac / processing issue. Jack " | Read more » over 4 years ago
"It sounds like the cuvettes absorb some oils (not quite the same as melting, but bad none the less). Plastic cuvettes are made for use with aqueou..." | Read more » over 4 years ago
"I hate to say it, but it looks like your laser peak at 499 nm looks like it was truncated, meaning that your fluorescence intensity is 25% of what ..." | Read more » over 4 years ago
"Hi Leroy, The Stellaris was replaced by the Tiva boards. The code is compatible with both boards. They can be purchased for $13 direct from Texas..." | Read more » over 4 years ago
"I responded to Kloots' comment (above) by email, but by the time he got it he had already diagnosed and fixed the problem. As I understand it, the..." | Read more » over 4 years ago
"Hi Mathew, The wiki is the user's manual at http://publiclab.org/wiki/wheestat-user-s-manual. I thought there was a link to it on this page but I ..." | Read more » almost 5 years ago
"I am pretty sure that it could be done. My only concern would be converting the microcontroller code from Energia code to Arduino. The two are ve..." | Read more » almost 5 years ago
"Hi Don, I see no reason why graphite would not work for measuring conductivity. In fact, I think it would work better than most metals since it d..." | Read more » almost 5 years ago
"Hi Don, Glad to hear that you liked the explanation. I hope to get around to measuring some metals in water before long and once I do, I will publi..." | Read more » almost 5 years ago
"Hi Doug, I am still not entirely clear on what it is that you ultimately want to do. I understand that you wish to prepare a PbO2 surface on graph..." | Read more » almost 5 years ago
"Hi Doug, I am not sure what kind of multi-potential steps you would want to do. Right now we can do a number of voltage profiles, including voltag..." | Read more » almost 5 years ago
"Hi Danielfp, I would be happy to get a board into your hands. Send me an email (summers at wcu dot edu) and we can figure out how to move forward. ..." | Read more » about 5 years ago
"Hi Don, I agree with Cversek that you need to keep the voltage difference small. you also might want to look at using graphite electrodes. The ki..." | Read more » about 5 years ago
"Hi Mike, Send me your contact info and I will see what I can do. Jack " | Read more » about 5 years ago
"Sure, BNC connectors just connect to two pins. It would be fairly trivial to exchange one or both BTA connectors with BNC connectors. It would me..." | Read more » about 5 years ago
"Very nice. I suspect that the limitation on accessible wavelengths is due to UV due to absorbance by the plastic optics and will not be improved by..." | Read more » about 5 years ago
"OK. I should probably say that I don't know that our reproducibility problem stems from oxidation, but that is my best guess right now. We did so..." | Read more » about 5 years ago
"Hi Don, That looks really good! Did you order a stencil too? I just had my first experience soldering with paste solder and a stencil, and I was..." | Read more » about 5 years ago
"That last comment surprised me. Turns out there are three versions of the board at the github site; The one I was looking at has four holes on 0.2"..." | Read more » about 5 years ago

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