Comments

Author Comment Last activity Moderation
JSummers "Hi @giannispimenidis, Sorry to hear that you are having difficulties. The voltammagram does look odd. To start off, try putting a resistor (10K t..." | Read more » over 2 years ago
JSummers " @oskarbob, the drivers must be downloaded from texas instruments. You can get them from http://www.ti.com/tool/STELLARIS_ICDI_DRIVERS. Instructi..." | Read more » over 3 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 » almost 5 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 » almost 5 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 » almost 5 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 » about 5 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 » about 5 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 » about 5 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 » about 5 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 » over 5 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 » about 7 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 » about 7 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 » about 7 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 7 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 7 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 » over 7 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 » over 7 years ago
JSummers "Hi IgorS, Sorry about the slow response. Things get really busy for me this time of year. The maximum and minimum currents that you will be able ..." | Read more » over 7 years ago
JSummers "Hi Igor, the kit can be purchased from the public lab store, here: http://store.publiclab.org/collections/new-kits/products/wheestat-potentiostat. ..." | Read more » over 7 years ago
JSummers "Hi Gretchen, We are making no attempt to degas the sulfuric acid solution. First, we used relatively dilute acid which we assume will behave more ..." | Read more » over 7 years ago
JSummers "Hi Kloots, I think you are working with a really old the sketch. At one point the code assumed that the trans2ByteA and trans2ByteB were added to ..." | Read more » over 7 years ago
JSummers "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 » about 8 years ago
JSummers "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 » about 8 years ago
JSummers "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 » about 8 years ago