question:sensitivity
question:sensitivity


Author Comment Last activity Moderation
cfastie "Kina, thanks for the videos. Very helpful. I might try CoolTerm again, since I was using a sketch that did not format the serial output in an appro..." | Read more » about 6 years ago
kinasmith "Hello again. I just did two quick screen captures explaining how to do this with CoolTerm, using code from this GIST. The First one is here: https:..." | Read more » about 6 years ago
liz "Wow thanks @cfastie!!!!!! This is very useful info. Did you notice about that I mentioned @nshapiro and @zengirl2 don't have the actual HCHO sensor..." | Read more » about 6 years ago
cfastie "I tried CoolTerm and never got it to work. I tried for only a half hour, so my failure is not so surprising. If you have a working data logger (e.g..." | Read more » about 6 years ago
liz "Email me liz@publiclab.org, if u can " | Read more » about 6 years ago
liz "Hi @kinasmith this is extremely helpful! I have some additional information to report: the HCHO meter has already been sent to the research site in..." | Read more » about 6 years ago
kinasmith "sorry, I wasn't very clear in that previous message. I'll try to clarify. You'll need an Arduino in the middle between the sensor and the computer...." | Read more » about 6 years ago
liz "Can someone (@kinasmith ?) do a quick screen recording with CoolTerm open while talking about what menus and settings are needed to actually make ..." | Read more » about 6 years ago
liz "Here's what the interface looks like: " | Read more » about 6 years ago
liz "^^ interesting! A whole new angle on this problem. I think I would actually do this first to see the results coming out of the sensor, whether or n..." | Read more » about 6 years ago
liz "ok thanks @cfastie and @kinasmith, i think i get it now! " | Read more » about 6 years ago
yamanoorsai "In fact, if the analog output is linear, I would not need the meter " | Read more » about 6 years ago
yamanoorsai "Hello, I would be glad to help as long as I get to share my work under an open license with everyone. How does one gain access to the HCHO meter li..." | Read more » about 6 years ago
kinasmith "so, how long will the sensor need to collect data for? If there is reliable power, and it's inside of a house, and it isn't running for weeks on en..." | Read more » about 6 years ago
kinasmith "I've read through the datasheet/manual for this sensor. Their use of audio connectors for signal and power connections is pretty questionable, but ..." | Read more » about 6 years ago
cfastie "Liz, I don't know the specs of the 1/4" phone plug, but it needs only two contacts, the tip and one ring along the shaft. I'm not sure which types ..." | Read more » about 6 years ago
warren "Thanks to all the software contributors who helped fix that -- @siaw23 @sagarpreet " | Read more » about 6 years ago
warren "OK - links and uploads now working again on the site! " | Read more » about 6 years ago
liz "wow awesome! @cfastie sorry to ask more but can you draw a picture on paper of what you expect these cables to look like? "A 1/4" stereo/phone plug..." | Read more » about 6 years ago
zengirl2 "@cfastie @warren ah, ok that makes sense now. " | Read more » about 6 years ago
warren "https://gist.github.com/jywarren/599b76ef9cdecdce764a7348f728ae31 " | Read more » about 6 years ago
warren "We're still struggling with a comment formatting bug -- apologies -- over in https://github.com/publiclab/plots2/pull/2605 -- here it is for the ti..." | Read more » about 6 years ago
cfastie "New answer below where I could attach a file. " | Read more » about 6 years ago
cfastie "A 1/4" stereo/phone plug connects to the HCHO sensor and two wires from that cable connect to the Arduino (tip of plug to A3, ring to GND). Below (..." | Read more » about 6 years ago