Author Comment Last activity Moderation
donblair "Hi @gretchengehrke! Sorry for the much-delayed reply :) and thanks for the comment. I, too, liked this approach -- basically, using the differenc..." | Read more » almost 6 years ago
donblair "I need a little help understanding this background. When you modulate the LED at 1 kHz, that means it's flashing on and off 1000 times a second? E..." | Read more » over 7 years ago
donblair "@pdhixenbaugh -- These are great ideas / questions / suggestions! I just posted a quick follow-up here:" | Read more » over 7 years ago
donblair "Yes, nice! In the picture, it looks like one could place a little cuvette right there in the middle and assess the turbidity :) " | Read more » almost 8 years ago
donblair "OH. MY. GOSH. Amazing design (and video!!!). Can't wait to chat with you about this. Relevant electronics parts are being ordered presently. " | Read more » about 8 years ago