wheetrometer
wheetrometer

This tool development project should lead to a visible spectrometer suitable for use in education. The detector could be used in other configurations to measure from the UV to the near IR. The ADC has 12 bit resolution so intensity data can be read to 4095 steps. The design is based on a 3D printed spectrometer described by @BHickman. The effort to update the original design is being led by @JSummers, and you are welcome to join in! Early Public Lab Research Notes by BHickman:[3D Printed Spectrometer](https://publiclab.org/notes/bhickman/08-27-2014/3d-printed-ccd-spectrometer-wheetrometer-3-0). [Wheetrometer 2](https://publiclab.org/notes/bhickman/04-21-2014/wheetrometer-2-0). [Original Note](https://publiclab.org/notes/bhickman/10-12-2013/ccd-diodearray-spectrometer). [notes:wheetrometer]...


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 » 9 months ago
esbenrossel "That looks great! Can you reveal some details about the optics? Groove-density, focal lengths etc? " | Read more » almost 3 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 » over 3 years ago
Ag8n " With your vbat pin, did you connect it directly to the +3.3v or go thru a pull up resister? What value resister did you use? Very interesting pr..." | Read more » over 3 years ago
farah "how to make a kite for child? http://www.ju.edu.jo/ UJ " | Read more » almost 4 years ago
esbenrossel "In case you guys haven't already seen, Reim over at pjrc has written a driver for teensy using the arduino IDE: https://forum.pjrc.com/threads/5256..." | Read more » about 4 years ago
iresal "Hi @JSummers, you are correct, I am pulsing the pins to these intervals,for the phi M I used other timer to generate the 1.4 Mhz signal (the 350 wa..." | Read more » about 4 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 » about 4 years ago
iresal "Dear @JSummers, thank for the reply. I assume you mean 3964 (instead of 4964) elements, and the 15 ms came from 4us (four times the clock ticks) x ..." | Read more » about 4 years ago
esbenrossel "Thank you for the mention :) I should point out that I'm not FlatCat/Fl@C@ nor do I have anything to do with the RamanPi-project. " | Read more » about 4 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 » about 4 years ago
iresal "@JSummers I find very interesting the way you drive the ccd, I do not understand the clock roll value, was it arbitrary or is it related to the int..." | Read more » about 4 years ago
xose "Amazing!!! " | Read more » about 4 years ago
david_uwi "I've found that the clock timing with the Toshiba arrays is not quite as rigorous as suggested in the datasheet (I've only tried it with the TCD110..." | Read more » about 4 years ago