We're a little crazy, about science!

Posts tagged “Technology

A lot of changes!

While EEG caps look super high tech, it’s actually a low-tech solution to an environment full of electrical noise. Each channel is pre-amplified at the source to reduce contamination as the signal travels down the cable. The first active electrodes? Made sometime in the mid 90’s, so a surprisingly new advancement in the history of EEG!

Well if there was any doubt that I write these daily I’m sure yesterday’s brief post explaining my panic helped answer that question. It really was a busy day and that’s not a bad thing. Things are… changing and I can’t tell how they will turn out now, but I’m anxious to see the outcome. How very mysterious! Let’s talk about it.

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The Nyquist frequency

Parts to a wave (top left) a example wave (bottom left) and different examples of how waves change based on frequency (top right) and amplitude (bottom right)

A few days ago I realized I had never bothered to explain the nyquist frequency. Considering it’s been over a year now since I explained some of the frequency domain things that I do in my lab, I’m actually surprised I missed something so important. Well, better late than never today we’re going to explain the nyquist frequency and why it matters… to my work at least.

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Day 350: In construction…

extruder

I redesigned my extruder to make it beefier, this has nothing to do with the post, but I’m really proud of it and wanted to share. Haha

Well today despite feeling like refried dog poop I have to go do experiments. It’s part of the job and to be honest I want to do it even though I feel like dried monkey vomit. I could go on, but you get the picture. I do have some more good news not related to yesterday’s news. So that is the conversation for the day.

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Day 337: The end of summer mentoring

virtualconference

Still trying to get used to the idea of virtual conferences.

Well we still have a month of summer break left, but we do have the end of summer courses coming. In just a week we’re having our undergrad researcher conference (virtually of course). Everyone will get a 5 minute block to showcase their poster, talk about their experience, and get a chance to answer questions about the projects they worked on (another 5 minutes max). The whole thing will take three days to get though.

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Day 336: A close call

Teddy Bear wearing a face mask to protect against COVID-19 spread

Teddy Bear wearing a face mask to protect against COVID-19 spread

Wear the mask!!

I was up bright and early today, 4:30am to be exact. We had two experiments planned for the day, one first thing in the morning, the other in the afternoon. Being the dependable person I am, I was up and out on time, arrived here early and setup to get started. That’s when it all fell apart.

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Day 335: Solid Modeling – Week 6

Light bulb render

Finishing our bulb today!! Wooo!!!

Welcome to week six! As always, this is a free class using FREE SOFTWARE. If you want to learn how to solid model, but couldn’t afford fancy or expensive software, then this course is for you. We’ll be taking things step by step so you (hopefully) will be able to follow along easily. If this is your first visit to my lovely series, then I would suggest you start at week one, which you can find in our incredibly helpful category Solid Modeling for Beginners. Today we’re going to finish our project from last week and make a super neat light bulb!

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Day 334: 3D printing, my final summer class

Robot parts

One of the slides I used in my 3D printing course, this was the robot I designed and 3D printed (prior to assembly) for my Masters degree.

Well I got a chance to give my last lecture yesterday (virtually of course) on 3D printing. I worked literally weeks to get everything ready and it went off (mostly) without a hitch. The world of 3D printing is full of vast, multifaceted, and divergent technologies with more applications than I could possibly list in a single lecture. In fact, they offer entire 12 week courses on 3D printing, so I had to cram everything together into a nice 1-2 hour presentation, where to start?!

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Day 333: Solid modeling course day 3

3D printer

My 3D printer still working hard, but I’m still having troubles!

Yesterday was the last day for my solid modeling class and surprisingly I got more questions than the previous days so that made me very happy. Today is my 3D printing course, so we’ll talk about how that went tomorrow (and push back our online 3D printing course by a day sadly).

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Day 332: Solid modeling course day 2

Printer

Yep, still dealing with printing issues so I have the dual extruder on. Ugh!!!!!! 5 HOURS still left on this print. Why does 3D printing have to be so sloooooooow?!

Well yesterday was day 2 of my solid modeling course, today is my last day of the class. Unfortunately tomorrow is my 3D printing course and I still haven’t got my printer well behaved yet. I guess we get to see all the 3D printing troubles! In any case, let’s talk about how the class went yesterday and what I have planned for today.

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Day 331: Solid modeling course day 1

20200715_134927

The dual extruder attachment, the current bane of my existence!

Well can’t complain too much about the first course. I’m used to people talking to me so it was an odd feeling talking into a screen with no one talking back. I had a few questions, but mostly the course was on how to think about solid modeling, so maybe not a lot of room for questions?

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Day 330: I’m teaching this week!

Harbinger

I love mass effect, so I really thought this was a perfect header image for the post since I am… assuming control!

Well I mentioned it a few days ago, but it’s day one of four today. I’m teaching three courses on solid modeling and one on 3D printing * Shakes fist at 3D printer who keeps giving me problems * and I figure I can talk about how my classes go after the fact, but let’s talk about my prep for these classes so my students get the most out of what I have to teach them.

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Day 327: Solid Modeling – Week 5

Light bulb render

Okay everyone, I had a bright idea for our sphere… get it, get it!?!

Wow, week five already! As per my usual intro, this is a free class using FREE software¬†so if you ever wanted to create a 3D model, this is for you and all you need is internet access to use the program we will be using. Now if you are just joining you’re going to want to start at week one, which you can find all the posts in the super lovely Solid Modeling for Beginners category. We finally did it, last week we made something cool looking! Today we’re going to expand on that and use what we learned to create another awesome thing!

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Day 320: Solid Modeling – Week 4

Finished Rocket

We’re making something a little more exciting than a cube today. Yay!

Welcome to week four! For those of us just tuning in, this is a class for solid modeling using FREE software, so if you have internet access, you can do this too! You can find the whole course in the handy Solid Modeling for Beginners category. Last week we introduced a whole lot of navigation tools and helped you get situated into the world that you’ll be able to model in. So let’s get started by doing a quick recap of the past weeks and hopefully you’ve done your homework because we’re using that part today to make something more impressive than a cube.

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Day 319: The (dis)information age

misinformation

Look around, we’re drowning in information. It’s an overload, we literally were not made to absorb this much information all at once. News stories bombard us with new bits of it. Social media is full of it. Ads promise you forbidden knowledge with this one weird trick. It’s no surprise it’s hard to tell what’s real.

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Day 313: Solid Modeling – Week 3

 

Sketchup planes

This course will all be taught using free software so have no fear, you can do it too! For those just joining us you can find all the posts in this series in the handy Solid modeling for beginners category. For the past two weeks I’ve been going over best practices. The reason is the tools are straightforward to learn, but how we use them is what separates someone who is learning from someone who is a pro. I have had some thoughts about what I wanted to cover this week for that reason, but this week we’re making something and by me we, I mean you! First, let’s do a quick recap of what we’ve learned and we can get started.

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Day 306: Solid Modeling – Week 2

part 18

We’re back again with week 2 of solid modeling for beginners! For those of you just joining in, you can read the introduction (pre-week 1) in this post. You can also find all the posts in this series (including week 1) in the Solid modeling for beginners category. Solid modeling isn’t too difficult, but it does take time and it does mean you need to learn to think about objects in different ways. Week 1 did a great job of introducing this type of thought process and today we’re going to continue from where that left off. Let’s just dive right in!

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Day 230: Coronavirus modeling – Part 3

Models

Comic by: XKCD

Well today will need to be short. I broke my model… on purpose, but it still broke. That means I need to go back and check my equations, make sure my assumptions are correct, then figure out why the heck I’m getting the results I’m getting. I have a good idea about what the problem is, I’m just not sure how I want to try to fix it.

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Day 132: Rat model validation!

stock photography Pet rat closeup

Yesterday I mentioned that I had some rat data to go through. It was an old(er) dataset, about five years-old to be exact, but it was one that was going to help me validate some of my findings. Unfortunately there existed no invasive human datasets to compare my human data to, so I needed to find an animal model, in this case a rat model. Let’s discuss the importance.

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Day 131: My laptop is ALIVE!

poor laptop

The poor thing has been through a lot, notice my c key is completely worn down. I didn’t know I hit c so hard!

Well after a few days of curing time, my laptop is alive again! In fact I’m writing this on it now. YAY!! I honestly don’t have the money to replace the thing and I already have much needed car repairs to attend to, so this cannot break on me yet.

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Day 129: Everything is breaking!!!

Day 129 - repairs

Well it’s post Christmas day and I have to say my stealth wrapping was a hit. Of course, after the first gift (or even the second gift) people catch on, but overall it was a lot of fun and I even got a few apologies for some of the ill will based on my apparent lack of wrapping abilities. I HIGHLY recommend giving it a shot. So let’s talk about the image above for a minute.

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