This is a testing site only. See the live Public Lab site here »


Comments

Author Comment Last activity Moderation
cfastie " The simplest modification to make the sketch save to SD card once per minute is to change the line: if (logData == 1) // wr..." | Read more » over 1 year ago
cfastie "Liz, it's great to know that you (or I guess your Mom) were well coiffed in the 80s, although I regret that you did not include photographic eviden..." | Read more » over 1 year ago
cfastie "Leslie, I will lend you anything you need. Tell me about your HEPA setup. You must already have a 5V Arduino, so all you need is three DuPont wires..." | Read more » over 1 year ago
cfastie "Thanks Nick. It's good to know about the duplicate sensors. That's an intriguing engineering decision. Chris " | Read more » over 1 year ago
cfastie "Hi Adam, Those thermoelectric fans are very smart. This guy on YouTube shows how to make one with a $3.00 thermoelectric module and parts recycled..." | Read more » over 2 years ago
cfastie "I like the idea of linking to other notes that set the stage for the current one. I was using the response:##### powertag for a while, but that doe..." | Read more » over 2 years ago
cfastie "Thanks Jeff. That's a really interesting question. I did not include step by step instructions, so a complete novice would have to do some research..." | Read more » over 2 years ago
cfastie "Ah, I see. Those keywords, DATE and TIME, refer to the time the sketch was compiled and are saved on the Arduino until a new sketch is loaded. Tha..." | Read more » about 3 years ago
cfastie "I guess the method would be deriving NDVI from inexpensive sensors (not cameras) operated by a microcontroller. There might be a better sensor (or ..." | Read more » about 3 years ago
cfastie "I've made a couple of those I2C hubs and they are very handy. They're fun to make too. I now put a little super glue between the header plastic bef..." | Read more » about 3 years ago
cfastie "That would be terrific if a ferrite bead eliminated the noise I was seeing. My impression was that the bead was protection against radio frequency ..." | Read more » about 3 years ago
cfastie "Thanks Ed, It's good to know there is hope for the Nano. That's an excellent thread you linked to. I might try removing the LED resistor and the r..." | Read more » about 3 years ago
cfastie "Xose, Thanks for pointing to those Grove I2C hubs. I had been pondering how to fork the I2C line. Here is my attempt to make an I2C hub from male h..." | Read more » about 3 years ago
cfastie "I figured out what I was doing wrong with the real time clock. This line in a sketch: RTC.adjust(DateTime((__DATE__), (__TIME__))); will set t..." | Read more » about 3 years ago
cfastie "A nice thing about DuPont jumper wires is that each wire has a separate connector. So pin pitch does not matter (if it is at least 0.1 inch, the Ar..." | Read more » about 3 years ago
cfastie "That's a nice little I2C hub. Maybe it would be easy to make something like that for DuPont wires from strips of male header: But somebody would..." | Read more » about 3 years ago
cfastie "There is a growing list of logger options and specs in a Google sheet. Please add information there if you know other stuff. " | Read more » about 3 years ago
cfastie "That Openlog is tiny! It combines an Arduino 328p with a microSD card, but still needs an RTC. There are clones of it available for $7.00. I have ..." | Read more » about 3 years ago