Comments

Author Comment Last activity Moderation
cfastie "I decided not to drop into the rabbit hole of applying time series analysis to these data. There does appear to be some periodicity present, but I ..." | Read more » over 6 years ago
cfastie "I have a hypothesis about the different results obtained with two BME280 sensors on the flying rig. A difference of 3° to 4°C is more than should b..." | Read more » over 6 years ago
cfastie "The Mini Pearl Logger in the compost pile stopped logging today when the battery voltage dropped too low. Four AAA eneloops ran the logger for 13.5..." | Read more » over 6 years ago
cfastie "A data logger based on an Arduino microcontroller is well suited to the task of recording temperature every few seconds. The simplest Arduino combi..." | Read more » over 6 years ago
cfastie "I checked on the Mini Pearl logger in the compost pile today and swapped SD cards. It was still logging after 7.5 days, so that's a new record. I n..." | Read more » over 6 years ago
cfastie "Thanks Ed, I disabled the LEDs and deployed the Mini Pearl Logger in the compost pile again. The batteries lasted 6.5 days instead of 2.3 days. So..." | Read more » over 6 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 » over 6 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 » over 6 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 » over 6 years ago
cfastie "That's a really cool-looking wind sensor. The new one requires at least 8 volts, so a big battery pack is needed. It would be pretty fun to put tha..." | Read more » over 6 years ago
cfastie "Without making modifications to the components, a Nano Data Logger will last two or three days on small batteries (4 or 6 AA or AAA). I'm not sure ..." | Read more » over 6 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 » over 6 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 » almost 7 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 » almost 7 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 » almost 7 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 » almost 7 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 » almost 7 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 » almost 7 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 » almost 7 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 » almost 7 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 » almost 7 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 » almost 7 years ago
cfastie "Update: The u-blox NEO-7M board can be powered with either 3.3 or 5 volts. The GPS module itself is not tolerant of more than 3.6 v, but the board ..." | Read more » almost 7 years ago
cfastie "I guess I demonstrated that the u-blox is protected someway or another from voltage over the stated 3.6v max. I was using four eneloop AAA (4 x 1.2..." | Read more » almost 7 years ago