This standalone sensor allows to measure the optical density (OD) aka turbidity through a standardized cuvette. 1-Channel for different wavelengths use multiple sensors with different 5mm LEDs. The design fits nicely a TIL-99 phototransistor.
see more on: http://hackteria.org/?p=2194
mini_od_new.pdf | 15.0KB | |
mini_od_new.svg | 63.2KB |