Comments

Author Comment Last activity Moderation
JSummers "Hi @MarcioPamplona, Step one is to figure out where the absorbance shows up. By that I mean the wavelength that you need to detect. Googling "woo..." | Read more » about 6 years ago
JSummers "Hi @Greg_H, If the altSPI files are not on your usb memory you can download them here: https://github.com/SmokyMountainScientific/altSPI There sho..." | Read more » about 6 years ago
JSummers "Hi @Greg_H, I am sorry that you are still having trouble with your WheeStat. While it is possible that it is a software problem, it seems more like..." | Read more » about 6 years ago
JSummers "Building a spectrometer is a fine university project, but this will not work for detecting fentanyl. Fentanyl does not absorb in the range where t..." | Read more » about 6 years ago
JSummers "Hi @nyck31, The short answer to your question is no. The spectrometer will measure light in the visible and perhaps short IR wavelengths. Fentay..." | Read more » about 6 years ago
JSummers "Hi, I do not think a peristaltic pump would work very well since it is not designed to have very precise volume control. I have a new syringe pump ..." | Read more » about 6 years ago
JSummers "Hi @Greg_H, sorry you are having trouble. The microcontroller should be powered up, and it must be if you are getting any kind of readout at all. ..." | Read more » over 6 years ago
JSummers "Hi Jeff, I was not aware of these technologies. Thanks for bringing them to my attention. Jack " | Read more » over 6 years ago
JSummers "Hi, I just checked the software with Windows 10 and it seems to work fine. When I click the "save_run" button it opens a dialog box that allows yo..." | Read more » over 6 years ago
JSummers "Hi, For the hardware you made, use the firmware here:https://github.com/SmokyMountainScientific/D_SeriesWheeStatFirmware/tree/master/WheeStat6_d. ..." | Read more » over 6 years ago
JSummers "Hi @momosavar, The WheeStat will run with about any rail-to-rail quad op amp that works with a 3.3 volt supply and comes in the 14-SOIC package. ..." | Read more » over 6 years ago
JSummers "Hi @momosavar, it uses the ek-tm4c123gxl. The voltage range of the model 5 potentiostat is limited to +/- 1.65 volts. The newer model 7 will go t..." | Read more » over 6 years ago
JSummers "Hi Aneesahmad, In the US, you can order one from my website, smokymtsci.com. Outside the US, you can contact me at my email summers at wcu dot edu..." | Read more » about 7 years ago
JSummers "Hi @TUtam, I am not entirely up on this project but am somewhat familiar with Processing and am wiling to help. I downloaded the WheeTrometer GUI ..." | Read more » over 7 years ago
JSummers "Thanks Chris, I don't expect that anyone will be making much money off of open-source science stuff. I see this as more of a service to my discipl..." | Read more » almost 8 years ago
JSummers "Hi Ivan, I will be happy to help you with this. Did you want to make a WheeStat or were you decided on using Arduino. The WheeStat was designed u..." | Read more » about 8 years ago
JSummers "Neat idea, but ... Perhaps I dont understand what you are trying to do, but getting a spectrum is measuring multiple wavelengths of light and laser..." | Read more » about 8 years ago
JSummers "That seems reasonable. I don't know whether the gel-ceramic junction will be an issue or not. My guess is that it will not be a problem. If it i..." | Read more » over 8 years ago
JSummers "I never have tried this but I know that it is widely used. Do you have experience with this? Is the gelled electrolyte something that you make or..." | Read more » over 8 years ago
JSummers "Hi @warren, I had never did put the board files online before (Sorry). I just made them available at https://github.com/SmokyMountainScientific/Wh..." | Read more » over 8 years ago
JSummers "@bjl1629 Hi, I made a mistake in the above comment, referring to the Energia code as being a pde file. It is actually an ino file. The GUI progr..." | Read more » over 8 years ago
JSummers "@bjl1629 Hi, This comment addresses the question of sampling frequency and I will discuss the cycling issue in the next comment. The WheeStat is s..." | Read more » over 8 years ago
JSummers "@bjl1629 Hi, The 5.1 board files are the most recent hardware designs released to the wild. This summer I have been working on new hardware (and s..." | Read more » almost 9 years ago
JSummers "@bjl1629 Hi, I have never done any EIS and have not gotten into its theoretical or practical aspects. That said, where would we all be if we let ..." | Read more » almost 9 years ago