Tuesday, August 24, 2021

Energy and Equity in Vermont

Adding solar power to my home and gradually switching all my heat and appliances to electrified models is something I’m pretty proud of. I will spend entirely too much time discussing it with anyone who is willing to listen. I’m not off the grid, but I would disconnect if I could. Eventually, I’ll have electrified my transportation, added as many solar panels as the roof can support, and done everything else I can think of to wrap my life in a self-righteous green haze of sustainable energy. The problem is that besides the personal satisfaction that comes from “doing everything I can for the planet and future generations,” it is only possible because of some underlying privileges and circumstances that don’t necessarily apply to my neighbors. I am a white male employed in a middle management position. I own a home, on native lands, and have two kids, two cars, and a spouse who is also employed in a career position. This provides me with the money to do things like buy-out the lease on my solar panels, pay for a heat pump, or even just consider replacing the broken bathroom window that leaks cold air in the winter. There are plenty of people in the State of Vermont who are not so lucky.

Aside from my own tendency to treat alternative energy like a hobby, there is an urgency to my shift away from fossil fuels. The IPCC report issued on August 7, 2021 (https://www.ipcc.ch/report/ar6/wg1/) should give anyone pause. Not everyone can take action on their own. Upfront costs for adopting clean energy are a barrier for many, many families in Vermont. Further, individual efforts, like my own, are unlikely to have a measurable impact in and of themselves. We need a cooperative effort as Dr. Michael Mann, of hockey stick graph fame, articulates so well in The New Climate War: The Fight to Take Back Our Planet:

Individual efforts to reduce one’s carbon footprint are laudable. But without systemic change, we will not achieve the massive decarbonization of our economy that is necessary to avert catastrophic climate change. (Mann, The New Climate War, Ch4)

Every little bit helps, but systemic change that affects the large-scale methods of how we generate, transport, and use our energy are necessary. Systemic changes can come in a lot of flavors, and certainly, individual, local, and state level initiatives are all part of the solution. Upfront costs for solar and electrification are high for a large number of people, and even with incentives and rebates, the costs can put alternative energy out of mind for many families in Vermont. Also, thanks to the rampant politicization of every single thing, there are also likely a fair number of Vermonters who may not wish to adopt solar or other alternative energy efforts because of a perceived political association, regardless of the real benefits. Convincing those who could, but won’t is a difficult task that requires its own study, but how do we provide for those who would but can’t? How do we overcome the financial barriers to make sure folks who could really benefit from the reduced energy costs grid-tie solar and efficient heating and cooling can bring?

One method would be to simply give it away. A simple statement with a complicated mechanism no doubt, but it’s a strategy we’ve seen work in the very recent past. The state of Vermont has done fairly well, up to this point, with vaccinating people against COVID 19. There are a number of reasons for that, but I think a pretty big one is that nobody has had to pay to get vaccinated. If people had to pay up front, even if just a small amount, even if there was a refund available, I bet we’d see a much lower rate of vaccination not just in Vermont but across the Nation. In the same way, I think it’s time to move away from the rebate model for at least the lower economic third of the State. Instead of rebates, we pay the providers to install a photovoltaic array on every low income home, including a battery array and a heat pump. This combination would provide power and heat for folks that need it and would keep the lights and heat on when the grid goes down. It would also benefit the utilities by providing a distributed source of power during times of high demand.

Of course, nothing is free and funding for a significant number of solar/battery/heat pump arrays would need to come from somewhere. The refunds and rebates that are already commonplace in this space would certainly help, and could be directly applied, changing them from a rebate to a pre-bate model paid directly to the utilities and installers. Surcharges could be applied to installations for higher income homes like mine and commercial installations to make up the difference. We all need to pull together. Some installations across the economic spectrum could be considered utility-owned equipment. The reality of grid-tied equipment is that the end-user is largely the utility companies. Switching to a utility-owned model, where the solar panels and batteries in a residence are the property of the provider, would be a small step and may be attractive to users who do not have the resources to purchase or interest in maintaining their own power generation and storage. The increased production and efficiency over traditional fossil fuel solutions would provide utilities with flexibility that a traditional centralized grid would not, especially in remote areas where repairs can be difficult. The utility could, as they already do in the case of grid-tied battery arrays, control the ratio of energy storage and supply to the larger grid based on demand and the potential for inclement weather. This could be particularly useful in isolated communities during ice storms, wind storms, or summer heat that often puts vulnerable people in dangerous situations.

Further funding may be on the way from the Federal government. The famed bi-partisan infrastructure bill currently winding its way through Congress contains scant funding for energy efficiency and climate action, but there are some bright spots that indicate that further action may not be that far off. For instance, it does contain a small item providing funding for non-profits and houses of worship to install renewable energy solutions and increase their efficiency (Infrastructure bill includes energy efficiency grants for houses of worship. Shimron, Washington Post, 2021). The budget resolution being considered by the Senate, however, is where the real meat and ambition are being placed (As Senate passes infrastructure bill, Democrats eye opportunity for more energy spending. Plautz. Utility Dive, 2021). Multiple tax benefits, incentives, and rebates are being discussed, all of which could ppotentially make the initial cost of distributed installations more palatable to investors and utilities.

The climate is making itself heard over the noise of politics and disinformation, and we have already arrived at the time to act. We need, as a society, to find ways to overcome the inequities and roadblocks that have built up over time that keep people from taking action and benefiting from technologies that can really make a difference. Getting the economic lower third to a better place with how their homes are heated and lit is a good first step. With promised legislation, current technology, and creative application, we can make this a win for local utilities, local populations, the State, and the world.

Saturday, September 16, 2017

Maker Fail

Well, I'll be at the Champlain Valley Mini-Maker Faire! They've accepted my idea and I'm trying to put together a table. I have two days to sort it all out due to circumstances beyond my control. Figures. Worst case scenario, it'll be an excellent example of a failure!

Anyone have any good famous quote ideas?

73 de KB1VNA - Eric

Sunday, September 10, 2017

Inertia

If you search on Google for the word "inertia" you get what I think is one of the best descriptions of my efforts on this blog that I could have hoped for.




I was going to use the second definition as a nice science-y segue, but that first one is just too perfect. It's clearly been some months since I wrote anything here and I'd be surprised if anyone is looking closely enough to notice a new entry, but oh well, you don't know until you try and I think this is a good opportunity to practice what you preach. As I tell my kids, you've got to keep trying.

A few days ago I signed up for a table at The Champlain Mini-Maker Faire in Shelburne, Vermont. I'm going out on a limb a bit on this one, because I've never really done this sort of thing on my own. I've followed along with RANV, one of the local amateur radio groups, and we've never missed one since they started having them, but I've never really tried to contribute. I've always had ideas about what the event needs, but never really gave them a try. This year, I decided to give it a go. If accepted (I haven't heard back yet), I intend to have a Maker Fails table. When you go to these events, you end up seeing some amazing things. There's lots of beautiful art, and finished projects. Some items for sale, some just for display, but generally polished and presentable work. What you don't see is the time, hard work, frustration, late nights, and sometimes foul language that goes into making that piece. I thought it'd be good to change that a bit. I've got plenty of unfinished and non-functional stuff laying around. Some of it could be resurrected or completed, but generally it's a mess in my shop. I've started asking around to local groups too and intend to do more of that. I hope that I can get across the message that persistence is as important a skill as soldering, welding, woodworking, or any other of the many things we practice to pursue the crafts we love.

This morning my wife wanted to go back to the South End Art Hop. We'd gone on Friday night but the weather was terrible. We got soaked. Today was a lovely day so the we took the two harmonics (ham-speak for kids) back down to Pine St. to wander around. We found the local cardboard pinball purveyors and decided to pop in for some light corrugated fun.We ended up talking to Pete Talbot, one of the creators of the PinBox 3000 and I pitched him the idea of the Maker Fail table. He thought it was a great idea and even showed me one of the original PinBox designs! I took some pictures but I'm saving that for Maker Faire! He's a great guy, and it was a great chat. They'll be down in NYC for the World Maker Faire this year, so if you're down there, stop by and say hi.

So that's what I'm working on for Maker Faire. The semi-autonomous steam octopod will have to wait for next year.

Oh yeah, I finally got a Bitx40 on the air. I'm
listening to the Hurricane Watch Net talk about Hurricane Irma down in Florida. Keep safe if you're down in the path of the storm!

73 de KB1VNA
Eric

Monday, January 30, 2017

Read the README file!

Hello all.

I hope everyone is staying sane in these interesting times!
I find retreating to my shop is often a good way of keeping sane, so make stuff! It helps!

We had another STEM club meeting last week and this time we had media presence! There's a brief shot of my sweater helping kid1 with the project but most of the footage is, rightfully, of Ralph and the kids (Kid2, seen below in his yogurt bedecked shirt was disappointed that he didn't make the news.). This weeks project was hoop gliders. They're simple little things, made up of a straw and some some strips of paper, but they fly surprisingly well. The concept Ralph was trying to get across was actually iteration and documentation. He tried to communicate the idea of controlled experimentation by having them change one piece at a time and seeing how the resulting glider performed. Of course it devolved into a mass of straws and paper wings, but that's to be expected. I only had to retrieve one glider from the stacks this time around.





I've made some progress on the BITX40! With the expert help of Yves D., Engineer Extraordinaire, I was able to locate the issue in the Arduino code that was causing so many compiling errors in my hack-up of the Si5351-Arduino VFO circuit.
Days of internet research returned no results for the error I was seeing (at least, no results that my novice experience could parse). The key was Yves' comment that the only issue with open source software like Arduino code is that the same iteration and documentation process Ralph was trying to communicate to the kids is mostly non-existent. The code gets changed for whatever reason, sometimes good ones, but that the changes don't tend to propagate across the larger community very well. That spurred me on to dig a bit deeper into the files included with the newest sketch. Finally, I found and dug into the wall of text that is the README file for the VFO sketch and sure enough, listed in there is a description of changes that were made to the libraries which require some minor tweaking of the code to compile properly. Now, of course, that README file was available to me the whole time, but it took me embarrassingly long to find it. So there are two morals to this story: first read the README files! All of them! Second, document your modifications. Do it one at a time, and write them out clearly so that you or some other poor soul who comes after you, can see the changes you made and make the appropriate modifications. If the original author hadn't documented properly I would have had very little hope of coming up with working code. Of course I had to look in the right place to find the answers I was looking for, but knowing where to look is often the hardest part of problem solving.

Lastly, at the recommendation of Micheal, N1FBZ, who I think was horrified to learn that I did not have a frequency counter, I picked up this $12 cymometer on eBay. I've got it "boxed" up in a piece of PVC and I'm actually pretty happy with the way it came out. My wife thinks it looks like an explosive device from some movie. I tested it out on the VFO circuit for the DC Receiver project and was happy with both the performance of the meter and the fact that it showed the VFO right where I want it to be. It tunes from about 6.8 to 7.4 MHz. It's a bit wide, but that's no big deal.

OK, I'm done, quit reading and go build something!

73 de KB1VNA
Eric

Monday, January 9, 2017

And Now, Back To Our Show!

OK, don't look now, but I think we all made it through the holidays.

Sorry for the radio silence. I had at least three posts planned since just before the holiday started, but let the crazy of the season get the better of me. Fortunately, I've got some new toys to play with and some projects to report on, so all is not lost!

First and foremost, the last STEM club meeting at the school was back just before the school holiday break. Ralph had them making hovercraft this time around, and as could be expected, the balloons were barely contained. (We did lose at least one to the stacks in the library.) Here's a short video of the project.

The concept is simple enough. The air escaping the balloon provides lift through some small holes in the cap on the PVC tube you can see between the balloon and the circular base. A little bit of rotation is applied when the balloon, twisted to keep the air in, is released, and a bit of a push sends it down the table. It was interesting to see how quickly the elasticity of the balloons degraded and how much that affected the performance of the design. I'm not sure what's next on the agenda, but I'm pretty sure Ralph will have them flying something around the library. As always, our thanks to the long-suffering staff of the Fairfax Community Library, and none of this would be possible without Ralph's remarkable efforts to part out all these kits.


The second thing I'd like to talk about is actually a couple things rolled into one under a larger theme. The two main projects I've got on the bench are the same ones that have been there for an increasingly embarrassing length of time. The 40m direct conversion receiver and the tuning mechanism for the BITX40. I took the 40m receiver and my BitSope Oscilloscope over to Nerd Night at a local IBMer's house where Nerd royalty gathers once a week to break bread(board) together. The good news was that my BitScope was not reading properly and I actually was pretty close to 7MHz with the oscillator circuit. The bad news was that my BitScope was not reading properly. So I've got some research to do and hopefully it's not a lost cause. The BITX40 case is nearly done, and I've assembled the SI5351/Arduino system to act as the Direct Digital Synthesis (DDS) unit for the transceiver. The bad news is that I'm rubbish at arduino coding and applying the scripts I've found online is an exercise in frustration. That brings me to my overarching theme. Failure. The reason why the DC receiver project has been on my desk for so long is that it's not working right. Something's wrong in the circuit somewhere and I'm having trouble nailing it down. The BITX40 would be done by now if I could get that stinking arduino code to work. I keep getting errors in the Integrated Development Environment (IDE) when compiling. That doesn't mean I'm giving up, by any means. It's frustrating, sure, and I've got plenty of projects stuffed away in various corners due to frustration at failed attempts, and there's always another project to try. 

It's easy to get discouraged when we see projects on web or see them at a Maker Faire, or magazine somewhere. We generally only see the good stuff. The ones that worked. The plane that flew, or the circuit that didn't explode dramatically (like that electrolytic capacitor that went BANG on me the other day! Fun!). We tend to show off our successes, and we should! They deserve to be to celebrated, but lets celebrate our failures too. That's where things actually make progress anyway, where we really learn. There's a quote attributed to Isaac Asimov that goes something like this: 

"The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but, 'That's funny...'"

Who knows if he actually said it, but I love the sentiment. It's the unexpected result that teaches.

I think next year for Maker Faire I'm going to see if I can get some local nerds to contribute and get together a "Maker Fails" table. Stuff that Did Not Work. I think I'll divide it in two parts, stuff people want suggestions for, and stuff people do not want suggestions for. Maybe I'll have a "Free Failed Experiments!" area too.

73 de KB1VNA

Friday, December 2, 2016

Maker Books!

Greetings all.

The Humble Book Bundle is currently a whole bunch of Make Magazine books. It's a nice little library of how-to for which you can name your price. If you give more than $15USD you get the whole shebang.

If you're not familiar with Humble Bundle, it's a charity that gives you the opportunity to name your price for a given assortment of stuff (originally video games - this is the reason why my Steam library looks like I'm more of a gamer than I actually am.). You can then choose how much of what you pay goes to the charity for that particular bundle. In this case it benefits MakerEd, which I admittedly know next to nothing about. It seems to also have an option to choose your own charity at the bottom, which is a new option to me.

So go check it out. Maybe get some cool books (in electronic format), and support a good cause!

Wednesday, November 30, 2016

On The Bench

Bonus Post!

I've been mulling this one over for a bit and meant to post before Thanksgiving but that clearly did not happen. 

Part of the idea of this blog was an exchange of ideas and what we're actually working on at the moment. In what appears to be true for a great number of makers, designers, tech geeks, and soldersmoke inhalers (always use proper ventilation folks!), I've got a never ending list of projects on the go at any given time. Unfortunately, this is what my desk looks like, which is actually much better than it has been. At least there's only one project there, believe it or not. The three copper clad boards in the middle of that mess of wires and assorted reclaimed components are an attempt at a direct conversion 40M (~7mHz) receiver as presented by Rick Kambel KK7B in the August 1992 QST Magazine. (That link goes to a .pdf file by the way.) The left-most board is a stab at Doug Demaw W1FB's Universal Variable Frequency Oscillator (VFO) as found in his now out of print QRP Notebook (if you look at the picture in the first blog post - that's the actual signal coming out of the VFO!). The circuit is complete but not functional. I think there's a problem in the amp section before the mixer. The middle board is the filter section, and the right-most is the audio section.

That project has taken second place, however, to Ashar Farhan VU2ESE's latest offering, the BITX40. Seen here on the right, it's a fully assembled and operational 40M transceiver that can be had from India for $45. The board is assembled by a women's collective in an effort to help people get on their feet financially. I love this.





The BITX40 is made with (radio) homebrewers and modification in mind, so all you get is the board and the bits and pieces to tune it up and get it on the air. You're on your own for an enclosure and any other modifications you may wish to make, such as a direct digital synthesis (DDS) tuner, digital frequency readout, automatic gain control (AGC) or any other refinements. This is how I'm getting around the cheating feeling I get for putting aside the scratch-built effort in favor of a purchased board. 

Right now I'm working on the enclosure which I intend to make out of wood (still mulling over the RF shielding issues there) and recycled PCB from scrapped electronics. Here are a couple of the pieces I'm going to be using for the top and one of the sides of the enclosure. I'll be cutting holes for the digital display (powered by an arduino and SI5351 clock circuit), a rotary encoder scavenged from an old home theater receiver, the volume and power pot, and the various ins and outs. I've got a drawing that I'll be using to mark out where everything goes and then will make some attempts at cutting the board without destroying it. 

To salvage the PCBs I removed all the old components with a heat gun and a flat head screwdriver. It was a bit tedious but it gave me a couple of nice pieces of PCB to use for other projects as well as an assortment of salvaged components. The trouble is getting PCB that more or less matches. One major lesson learned in the component removal process was that it seems to work best with PCBs that have a large ground plane to distribute the heat from the gun as opposed to those with only a few copper traces across the board. Boards with only a few scattered traces tended to warp and burn. I had to stop the process on a couple pieces as smoke began to pour off of them. Nothing ignited, thankfully, but I can't image the smoke from burning PCB is terribly good for you. 

OK, I've gone on more than long enough. Your turn! What are you working on?

73 de KB1VNA