| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| JSummers | "Hi Esben, Thanks for the comment, and thank you for your early work on the TCD1304. That was instrumental in us getting this project as far as we ..." | Read more » | about 3 years ago | |||
| JSummers | "Hi Doug, I would be happy to help you. Here is the status of the potentiostat project: Our original design was limited to outputting +/- 1.65 volts..." | Read more » | about 3 years ago | |||
| JSummers | "I have been thinking about developing a spectrometer to record such spectra. What is your time frame to get this done? What resolution are you in..." | Read more » | almost 4 years ago | |||
| JSummers | "sure, you can do it. Of course the diffraction angle will be different. It looks like the dvd has 1300 lines per mm and the grating has 1000 so t..." | Read more » | over 4 years ago | |||
| 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 4 years ago | |||
| JSummers | "Hi jfalquet, I dont have experience with this but it looks like getting out to 13 microns is neither easy nor cheap. Here are some options for a d..." | Read more » | almost 5 years ago | |||
| JSummers | "Hi @super_smartaga, Your question will get better answers if you can answer some initial questions. What do you consider cheap? What wavelength ra..." | Read more » | about 5 years ago | |||
| JSummers | "Hi Wln213, Interesting project. First thing, when you do technical writing like this, please describe the figures in greater detail. The main figu..." | Read more » | about 5 years ago | |||
| JSummers | "I believe the yellow color you see when burning wood or paper is the atomic emission from sodium ions in the material. It is the same color you se..." | Read more » | over 5 years ago | |||
| JSummers | " You could get a local lab to test for metals using atomic absorption or atomic emission. You would have to look up the best technique for the met..." | Read more » | over 5 years ago | |||
| JSummers | " Getting the solar spectrum was a good idea. Clearly, the lines in this are not due to the light source and must be attributed to the detector. O..." | Read more » | over 5 years ago | |||
| JSummers | "You may be able to do this using the GPS on your phone with an app like Strava. I think the Z direction accuracy of GPS is not as good as the XY a..." | Read more » | over 5 years ago | |||
| JSummers | " I think what you want will be called a barometer. It is what drones use to measure altitude. They are not super expensive, here is one for $6.70..." | Read more » | over 5 years ago | |||
| JSummers | "How would this differ from wiki pages? Seems to me that the difficulty with wiki pages is keeping them up to date. That appears to be the problem ..." | Read more » | over 5 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 5 years ago | |||
| JSummers | "Lehninger, Principles of Biochemistry, Fourth Edition, David L. Nelson and Michael, M. Cox. WHFreeman & Co, NY. Chapter 6, Sections 6.3 (Enzyme..." | Read more » | almost 6 years ago | |||
| JSummers | " Hi Ag8n, Thanks for your interest. No, we are not headed toward chromatography although the flow cell & spectrometer are pretty well set up fo..." | Read more » | almost 6 years ago | |||
| JSummers | " Hi Ag8n, Thanks for the comment. I am glad you are interested. We just connected the VBAT pin to the +3.3 volt bus. You did not miss any descrip..." | Read more » | almost 6 years ago | |||
| JSummers | "Hi @iresal, The correct integration time is the 15 ms time. I think that is the minimum time to read the data from the output pin. The 4 ms value ..." | Read more » | over 6 years ago | |||
| JSummers | "Hi @iresal, you are correct about the clock roll value being related to the integration time. As the code is written, the integration time equals ..." | Read more » | over 6 years ago | |||
| JSummers | "You can get gratings from places like Thor Labs or Edmond Optics. For a uv lamp, I would look at Thor labs or spectrometer vendors like Ocean Opti..." | Read more » | over 6 years ago | |||
| JSummers | "Hi @ONECore and @hmx, I just posted a research note on this topic. it is here: https://publiclab.org/notes/JSummers/06-03-2018/updating-the-wheet..." | Read more » | over 6 years ago | |||
| JSummers | "Anyone interested in this project? I am working on code to use the Toshiba TCD1304 ccd in this project. I hope to have this to a point where I c..." | Read more » | over 6 years ago | |||
| JSummers | "Nice project. This spectrometer could fit into an open-source chemical kinetics project I am working on. If you would be interested in collaborati..." | Read more » | almost 7 years ago |