Comments

Author Comment Last activity Moderation
cfastie "The specs for the TPL-5110 timer IC say it can time intervals up to 7200 seconds (2 hours). It seems unlikely that it could be extended beyond that..." | 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 » almost 2 years 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 » almost 2 years ago
cfastie "Thanks Nick. It's good to know about the duplicate sensors. That's an intriguing engineering decision. Chris " | Read more » almost 2 years ago
cfastie "Fig. 6 was created using Fritzing (http://fritzing.org/home/). The annotations and some editing were then done in PhotoShop. " | Read more » over 2 years ago
cfastie "Yes, I agree that this is a different approach to an issue that has had a lot of effort directed at software solutions. This is a purely hardware s..." | Read more » over 2 years ago
cfastie "It appears that storing data in flash memory on an Arduino is not so easy. The PROGMEM keyword only works for writing constants before the main lo..." | Read more » over 3 years ago
cfastie "It seems that it might be straightforward to store arrays of data in the 32k of flash memory in a 328p chip. Flash memory is non-volatile and your ..." | Read more » over 3 years ago
cfastie "This is very clever. I wonder whether the memory in a Atmega 328p can be used to store data. I wonder if it is possible to access those data later...." | Read more » over 3 years ago
cfastie "This is probably not the best data set to do calculus on. The air temperature data is from a sensor in a jug suspended above the pile, and the batt..." | Read more » over 4 years ago
cfastie "Thanks David, I wish I had some of your manures to spice up my pile. I'm surprised at how hot this pile is without the addition of any N-rich mater..." | Read more » over 4 years ago
cfastie "George that's a good point. Although the real time clock is running all the time, it is not smart enough to do something as complicated as setting ..." | Read more » over 4 years ago
cfastie "Don thinks that eight seconds might be the minimum interval during which the system can be put into deep sleep. So all the sleep stuff happens in m..." | Read more » over 4 years ago
cfastie "Thanks Bob, that's encouraging. My bricked card just gets hot to the touch when I put it into a card reader. I don't have much hope for it. " | Read more » over 4 years ago