A quick update on preparations for Project 31 (though, in reality, it’s hard to say what’s just part of my life and what counts as “preparation”…) I still haven’t decided on the exact start date, but I’m guessing I’ll be ready by mid-February.
It’s been surprisingly dry for the past few weeks, but it’s quite possible that the weather will get wetter during Project 31. I have about 30 gallons of rain water so far, so even if there’s no precipitation, I can probably live off of that for a month if I don’t shower (I also have 55 gallons of potable water as backup). As for sanitizing collected water, I have a length of PVC pipe, along with some sand, gravel and charcoal to make a filter out of. For actual drinking water, I’ll pass the filtered water again through a Britta filter. It might not remove 100% of contaminants, but that should make the water clean enough to not kill me in 31 days.
Progress on Hut 2.1 has been slow but steady. I finished putting up the last of the exterior rigid insulation boards last night, so practically every square inch of the walls and roof are insulated at this point. The next step is to put in the insulated raised floor, and continue with the interior “furnishings”. But I can work on that during Project 31, so I’m not in a huge rush.
I had a bit of a scare yesterday & this morning, when I realized that the charge light on my charge controller was conspicuously off, even though the batteries had run down to 12.5 Volts. My multimeter showed an unusually low voltage across the solar panel cables, which lead me to believe that the solar panel had stopped working. After trying a few different things today, I realized that the solar panel’s voltage was fine, as long as it wasn’t hooked up to my charge controller. In other words, when it was connected to my charge controller, some kind of anomalously huge resistance was dropping the voltage to almost zero, without actually sending any of the current to my batteries (I’m guessing a short of some sort). In fewer words, my charge controller is broke. Fortunately, I had another charge controller lying around, so once I did a little rewiring, I got some juice flowing to the battery array again. The broken charge controller is still under warranty, so I should be able to send it in for a replacement, which, hopefully will arrive before I start Project 31.
This incident had me thinking that I might want a back up to my 100W solar panel, in case it did decide to break. A week or so ago, I bought a 45W solar kit from Harbor Freight because it was on sale, but I ended up returning it because it didn’t seem like I’d need the additional capacity. But it might be a good idea to have another set of panels as backup, just in case. Without a backup solar panel, my backup-backup would be to use my car battery, but that would require running the engine to keep the battery charged.
Also on the topic of electricity, I ordered a Xantrex ProSine SW600 pure sine-wave inverter, which should be arriving soon. It’s only rated for 600W, but I don’t think I even own any appliances that use anywhere near that much power. The most power hungry device I own is probably my laptop, which should pull no more than 85W.
I’ve been using the stove every night since I finished the chimney, and it’s kept me nice and warm even when it got down to 15F (-9.4C) outside. In fact, keeping the heat low enough has been the bigger challenge, especially when I’m only burning wood. It’s hard to have a small self-sustaining wood fire that doesn’t burn out in 10 minutes, yet stays hot enough to ignite and burn bigger chunks of wood. I’ve been burning a mix of charcoal and wood, and might look into making my own charcoal once I’ve burned through the bags I bought for my previous experiments. I’m also continuing to gather firewood while the weather is relatively dry, with the goal of actually stocking up on a month’s worth, so that I won’t have to worry about fuel even if it gets wet and cold during Project 31.
I’ve also tried to cook using the stove, but that’s proving to be a little harder than I’d anticipated, because the cabin gets uncomfortably warm if I get the stove hot enough to cook with. I also only have the wood stove going in the evenings, so I’d need to use propane to cook meals or heat water during the day. This isn’t a huge problem, but I might need to revise my projected propane usage up, since I might be using my propane stove for cooking more than I’d anticipated.
I was originally thinking of getting a Verizon MiFi for internet, but I’ve since decided to get a Verizon iPhone, since it has the same capability as a MiFi but would allow me to cancel my AT&T iPhone plan, and have one phone instead of the current two (I have an AT&T iPhone which doesn’t work on my property, and a Verizon feature phone on a prepaid plan for when I’m on my property). The Verizon iPhone goes on pre-order tonight, and becomes available on the 10th.