| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| stevie | "Hi Jeff, thanks! This is great. I'll copy the question link into that email chain as well. Think some of the readers there would be interested, it'..." | Read more » | almost 7 years ago | |||
| stevie | "Wow. These are awesome resources!! Thanks for clarifying the seeing/sizing distinction. " | Read more » | almost 7 years ago | |||
| warren | "@pdhixenbaugh - any thoughts on this? " | Read more » | almost 7 years ago | |||
| guolivar | "Yes, environmental conditions do affect the ability of an optical sensor, not too much to "see" a particle but rather to "size" it. All of these o..." | Read more » | almost 7 years ago | |||
| jeffalk | " Yes is the simple answer: high humidity and/or moisture can effect particulate counts by raising them. Once you accept this the next step is how..." | Read more » | about 7 years ago | |||
| mikekaliven87 | "Wow, why do you need that? " | Read more » | about 7 years ago | |||
| cfastie | "The prices at Aliexpress seemed to be the about the same as at Amazon. Some of the product descriptions at Aliexpress named the sensor. For exampl..." | Read more » | about 7 years ago | |||
| hank | "I suggest you try aliexpress.com instead of Amazon -- why pay double or more money for stuff when you can buy it direct from China? They are an um..." | Read more » | about 7 years ago | |||
| cfastie | "A good starting point for evaluating these sub $60 action cameras is the sensor. Many if not all of these cameras use sensors that do not have as m..." | Read more » | about 7 years ago | |||
| cfastie | "Here is a better answer. The first time the sketch tries to read the BMP280 sensor is immediately after the sensor has been initialized. So the sen..." | Read more » | about 7 years ago | |||
| cfastie | "Way to go getting the Nano Logger logging! The first elevation data point is always wacky because the first barometric pressure data point is alway..." | Read more » | about 7 years ago | |||
| MadTinker | "Thanks for the info Chris. I also ran across the KnowFlow that has a lot of pretty good info. They also rely heavily on the DFRobot sensors. Until..." | Read more » | about 7 years ago | |||
| cfastie | "That sounds like a wonderful "opportunity." It is also a revealing test case for the suitability of DIY environmental loggers to serve their maste..." | Read more » | about 7 years ago | |||
| stevie | "Responses from the mailing lists: Hi Carol! So excited to work on this at Barnraising! Someone correct me if I'm wrong, but the data loggers will ..." | Read more » | about 7 years ago | |||
| warren | "Carol chipped in on the mailing lists: My first question is, similar to Chris's, what can the data loggers do? Conductivity? Turbidity? pH, dissol..." | Read more » | about 7 years ago | |||
| cfastie | "Okay, now I understand the question. It's really helpful to know what data logger hardware you will have. You will have a Nano Logger Kit. You will..." | Read more » | about 7 years ago | |||
| stevie | "Hi Chris, thanks a bunch! I'm hoping we can work on developing out an activity of two for people to do in first experimenting with data loggers as ..." | Read more » | about 7 years ago | |||
| warren | "These are some really good questions, many of which get at the question of "constraints" -- i.e. what constraints are you designing towards? A spec..." | Read more » | about 7 years ago | |||
| warren | "I've just bought a $40 GoPro look-alike that has WiFi, and will be testing it out at the Appalachia Barnraising. We'll check in once we've done thi..." | Read more » | about 7 years ago | |||
| cfastie | "Stevie, it sounds like you are looking for demonstrations of things data loggers can do. That really depends on what logger(s) you have and what se..." | Read more » | about 7 years ago | |||
| warren | "Possibly some of the Coqui activities (which were designed for real-time monitoring, not data logging) could be adapted for a data logger? https:/..." | Read more » | about 7 years ago | |||
| nshapiro | "Here is the EPA's take on that: https://www.epa.gov/air-research/village-green-project Its rather expensive but losing the PM 2.5 monitor would sa..." | Read more » | about 7 years ago | |||
| warren | "These or similar cameras are as low as $40 now! https://www.amazon.com/gp/aw/d/B01DG9UMS6/ Via @azaelb at https://publiclab.org/notes/azaelb/12-04..." | Read more » | about 7 years ago | |||
| nanocastro | "this is open source option from CTA Brasil. Documentation in portuguese " | Read more » | about 7 years ago |