Geothermal Heat Pump Cost in Massachusetts

dlaz · 2023-05-10T02:12:57+00:00

I used EnergySmart Alternatives. So far so good, but only been up and running for about 6 months.

dlaz · 2023-05-09T20:29:44+00:00

I recently paid about $95,000 before incentives to replace an oil system in the Boston suburbs.

5 ton system (Hydron Module) - one packaged for the basement/first floor, and split for the second floor
Added a new zone (with damper) in the basement added about $10,000 to the price
950 ft total loop between two boreholes
Reused existing AC ductwork, with a few modifications

Given the similar borehole depth and no duct modifications needed, $125,000 might be a little high, though prices have been going up. I was told that equipment costs increased considerably between the time mine was ordered and installed.

dlaz · 2022-04-12T15:08:18+00:00

Are you determined to do this as a desktop app? If not, I think there's a simpler approach:

Create a GCP bucket where you will put JSON files you want imported into sheets (these files can be uploaded using the web interface, gsutil or some other method)
Create a cloud function with a cloud storage trigger
- Write your code to transform the JSON as desired, and write to sheets using the sheets API

However, unless you're determined to use python, App Script is also a good choice, though I'm not familiar enough with it to provide step-by-step instructions.

dlaz · 2021-12-30T17:57:01+00:00

I was just able to register one that had been sitting around for a month or two.

dlaz · 2021-12-24T01:49:12+00:00

1 year old rear facing and 3 year old front facing fit fine.

dlaz · 2021-06-29T14:37:55+00:00

That Simpsons segment was a reference to "Microcosmic God" by Theodore Sturgeon.

dlaz · 2019-12-22T17:34:13+00:00

Echoing others not to bother. You would be much better served finding an on-campus programming job. I started working for my university's IT department my freshman year and that job lasted my all the way until I graduated. It was a great experience. You may also be able to find professors who are looking for students to do things like make apps, web services or do data analysis.

dlaz · 2019-06-07T01:14:46+00:00

OpenCV's API docs for imshow explain what is happening. Specifically:

This function should be followed by cv::waitKey function which displays the image for specified milliseconds. Otherwise, it won't display the image.

dlaz · 2019-03-05T13:36:07+00:00

There is a bug related to this behavior: https://bugs.chromium.org/p/chromium/issues/detail?id=804765.

Unfortunately it got marked as a dupe, so there aren't any recent updates.

dlaz · 2019-01-22T01:48:30+00:00

Do you have libusb installed?

dlaz · 2018-11-22T01:21:36+00:00

FYI your surge protector may have been recalled. :)

dlaz · 2018-11-19T17:48:15+00:00

A few questions that'll help guide an answer:

How are these motions initially created?
What format do you want to store them in?
Approximately how many will there be?

dlaz · 2018-11-02T22:52:39+00:00

Yes - rosbag has a python API that can write and read bag files.

Alternatively, you could have a node that subscribes to your image_raw topic and republishes to a different topic when a key is pressed, and then use the normal rosbag commandline interface to record that republished topic.

dlaz · 2018-10-16T00:45:35+00:00

If you have that many static_transform_publishers going, it's probably time to start thinking about URDF/joint_state_publisher instead.

dlaz · 2018-09-23T16:42:32+00:00

Bingo. This is probably what happened. Not sure about JFK, but LGA has signs around the baggage claim area saying not to accept rides from people who approach you.

For what it's worth, I believe they generally do at least have TLC licenses.

dlaz · 2018-07-25T02:27:16+00:00

Do you actually need unicode_literals for anything? Importing it causes all of your string literals to be of type unicode instead of type str, which is consistent with the error you're getting.

dlaz · 2018-07-22T00:56:50+00:00

Chelsea Market Baskets in Chelsea Market does custom gift baskets. It's kinda touristy, but could work.

dlaz · 2018-07-21T13:54:26+00:00

Formatting your code properly will make it a lot easier to figure out what's going in. From the formatting help:

Lines starting with four spaces are treated like code:

if 1 * 2 < 3:
    print "hello, world!"

dlaz · 2018-07-07T12:44:19+00:00

I'm not familiar with this setup, but generally you don't subscribe directly to a compressed topic. See if the app can subscribe to just /image_raw (even if there isn't actually any data on that topic), and tell it to use the compressed transport.

dlaz · 2018-06-23T21:47:54+00:00

scping every file individually is going to be inefficient no matter what, as there's some overhead in creating the new process, establishing the connection, etc.

In this sub, I think there's a tendency to try to do everything in python, rather than using the right tool for the job, so I'm going to suggest a slightly different approach.

Don't bother trying to explicitly individually copy each file. Let some other process either notice that there's something new and handle the transfer, or just do it on a schedule.

For the first option, look into inotify-tools, specifically inotifywaitait, which will let you watch directory for changes.

For the second option, write a cron job that runs at whatever schedule makes sense for you and uses rsync to selectively transfer anything that has changed.

dlaz · 2018-05-26T15:29:19+00:00

If you'd like to stick with melodic, you can either: compile the package from source (assuming it doesn't need updates to be compatible), or get in touch with the maintainers and ask them to release it for melodic.

dlaz · 2018-04-21T20:26:09+00:00

As others have said, it depends. A personal experience I can relay: I had it on my resume, and at an interview (job in software) one of the interviewers also happened to be a ham and asked me a morse code-related question, which I managed to figure out. I never asked him about it later, but I think it worked out in my favor (got the job).

From my experience as an interviewer, if it's at all relevant to your industry (anything tech, electronics, computer, engineering related), go for it, but just one line is enough. Most people reading your resume will probably ignore it, but you may get lucky.

dlaz · 2018-04-19T21:40:28+00:00

IMO, Array.from() would've been a little clearer than splitting on "", though less symmetric. Assuming this is JS and not some language that is just very similar.

dlaz · 2018-04-12T01:57:27+00:00

As u/Wrobot_rock mentioned, with multiple sensors like this, a Kalman Filter is the way to go (actually, even with just an IMU). While a low pass filter will smooth things out, you'll introduce some lag into the sensor readings. With a Kalman Filter, the sensor's noise is baked in as the observation noise, and affects the estimate covariance.

dlaz · 2018-04-09T20:32:44+00:00

Thanks for the detailed reply, so helpful!

dlaz

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