Category Archives: Classes

Solar Energy Class

Presentation on installing & using solar power to reduce your electric bill.

Saturday we had the 2nd of two adult classes this month, the first a week earlier was an updated Photogrammetry class like what we taught in the fall. Great class, Rebecca Kerns did an excellent job where we showed folks about using Agisoft’s Metashape (formerly Photoscan) & 3DFlow’s Zephyr. A few folks hung around afterwards, we did a cellphone video of a model car that was converted into a computer 3D model.

A solar survey tool can determine percentage of direct light during the day & year.

The second class, on installing and using Solar Power, was taught by Ed Kirkpatrick – who had more experience than all of us realized! He offered to talk about his experiences with installing the solar panel system on his house, but it turns out he’s been working with different solar systems for years! Starting with R-values and how they save energy, he then covered some of the passive systems he’s built, including heating rocks/walls and solar water heaters.

Ed discusses recent solar panel cost trends.

But most of the talk was on photovoltaic panels. Ed has a 3000 watt system at home he’s upgrading to 6000 watts this summer. And is involved in ETA‘s solar installer certification program. He not only covered the correct way to survey for and install panels, but also different kinds and cost trends. We even got into batteries and storage systems. The group had lots of questions which were answered, then finished up by going outside and using a Solar Pathfinder to do a solar site survey in front of Castlemakers. Thanks for the great class Ed!!

Photogrammetry and 3D Printing

roman lamp made using photogrammetry
Image of a Roman lamp unearthed this summer in Italy created from photos & then 3D printed.

Castlemakers offered our first class on photogrammetry, or using photographs to create 3D objects, in October. But the more interesting story to me was how we got there. It began just before our Intro to 3D Printing class last spring, when a couple of folks wanted to learn about 3D printing so they could hopefully print things from an archeological dig in Italy in the summer. While I had experimented some with earlier software, this was mostly new territory.

Italian dig site near Umbria being printed. Pillars are the flooring in a Roman bath house.
Italian dig site near Umbria being printed. Pillars are the flooring in a Roman bath house.

But Rebecca, one of the students in the class, took it to another level. She was able to get a copy of a professional program, Agisoft, then take pictures at a Roman dig site in Italy this last summer. Using the program, she generated 3D images of artifacts they found and even took photos of the excavation at the site (a Roman bath house) which she was able to turn into a 3D image. When she got back in August, in a little over a week she was able to 3D print not only artifacts but also make a model of the dig site using the 3D printers at Castlemakers.

As we prepared for the Castlemakers class to show others how to do it, we discovered what may be an even better solution – a program called 3D Zephyr. We decided to cover both, especially since 3D Zephyr has a way of extracting photos from video to make the 3D image – a pretty amazing feature! The experiments will continue with local landmarks and we’ll be doing the class again this spring.

Girl Scouts / Makevention

Central Indiana girl scouts learning about electronics & Arduinos.
Central Indiana girl scouts learning about electronics & coding.

This last Saturday we had 2 events going on in 2 different cities, a bit of a landmark for Castlemakers. In Greencastle we had our first STEAM class for the Girl Scouts of Central Indiana. 15 girl scouts and parents from Indianapolis learned about sensors and coding using Circuit Playground Arduino based boards.

2nd Floor Main lobby of Makevention, but a lot more in other rooms and first floor.
2nd Floor Main lobby of Makevention, but a lot more in other rooms and first floor.

At the same time, in Bloomington, we had a booth at Makevention, our 2nd year there.  Makevention is a little harder to describe. If you’ve ever been to a Maker Faire that’s close, especially this year since they added workshops and presentations. Makevention is a celebration of the Maker Movement, you can learn about all kinds of DIY/making – from robotics to soap to swords/knifes to lock picking to…

Makevention Makerspace panel which included Castlemakers.
Makevention Makerspace panel including Castlemakers.

At our booth we had some of the PuttCode robots which we used on the CoderDojo mini-golf hole, although several other holes from previous Putt Putnam County events were there also. The other booths were also interesting, it’s a great event for seeing what other groups in the area are doing and making. It’s usually the last Saturday in August and definitely worth attending.

 

Community Classes

Laser Engraving/ Cutting Class
Attendees watch as Rodney cues up their design in the Laser Engraving/ Cutting Class.

Since last summer Castlemakers has been teaching more STEM/STEAM/Making classes for anyone interested in our community. If attendance and topics can be a judge, then our effort has been a success! Our March Introduction to Laser Cutting class, which we wanted to limit to 8 people, had 10 people (squeezed a few more in at the last minute) including folks that drove from Kokomo & Whiteland, IN to attend.

IoT ESP8266
People uploading test code to the  ESP8266 based IoT device they built so it will broadcast temperature & humidity.

In April, we took on a very challenging current topic – Internet of Things (IoT). The IoT class allowed people to not only learn about IoT & but also build an IoT device that they could take home. We’ve already had additional requests to learn about it and will repeat the class again in the future.

IoT Class
Group discussion of how the IoT device gets data to a webpage that students were accessing.

In May (5/24) we’re starting a new class series called Design to Product. We’ll begin by teaching folks how to use 3D software (like Fusion 360) to design a product, then in subsequent months you’ll learn how to make them using a 3D printer, laser cutter, or even a desktop CNC machine.

Visit our classes webpage to find out more or subscribe to our events email list to keep up-to-date on learning at Castlemakers.

Learning with Hams…

Students learn about Amateur Radio Technician license privileges.
Students learn about Amateur Radio Technician license radio privileges and operating procedures.

Last night PCAUXCOM, the local Amateur Radio emergency communications group, began a FCC Amateur Radio operator’s license class at Castlemakers. It’s a great way to study for the test – although you can self-learn the material to get a license.

What they’re doing however embodies what often happens with vocations and hobbies – people practicing and learning with other people. Not only to learn quicker, but for enjoyment too. It can help make challenging things easier; in some cases even provide focus and accountability. In today’s noisy world with more opportunities than time that’s often difficult.

Makerspaces, and one of Castlemakers’ goals in particular, can bring communities of people together to share knowledge and skills by providing a space, events, equipment, and even just a reason for people to share something. Whether it be a CoderDojo (bringing kids and programmers together to explore programing languages), folks interested in 3D Printing (which also met last night to see printers in use at a high school classroom), or Amateur Radio operators and emergency volunteers assisting others to get a communications equipment operating license.

The PCAUXCOM group is meeting every Monday evenings from 6:30 to 8 pm at Castlemakers, it’s free and open to all, and still not too late to join in. They will also be offering a licensing test locally here in Greencastle just after the course is finished, contact George Edenfield for more information.

Electronic Cutter Class

In the December class we learned how to design and create a greeting card with an electronic cutter.
In the December class we learned how to design and create a greeting card with an electronic cutter.

Our December class was something new for many of us, learning about electronic/vinyl cutters. There are several different brands available; we were given a desktop Cricut and there’s some local expertise so that’s what we used! But the basics apply to all of them. The Cricut Explore we have in the Makerspace will cuts and draw using different color pens on a variety of different thickness material including paper, foil, vinyl, cardboard, fabric iron-on, magnets, and even emboss leather.

Examples of items made with an electronic cutter.
Examples of items made with an electronic cutter.

Laurie Hardwick, who has several Cricut machines, taught the class & did a fabulous job. After showing some great examples, she then covered the design software. With a 2 hour time limit folks chose to modify existing designs, but it is possible to import images into the software (and perhaps a later class). It was amazing how such a professional looking product could be made in such a short time!

Several folks wanted to come back and try more. Our machine is available for anyone to use during open shop times or even by special arrangements. Castlemakers also offered to host a meetup for Cricut or Silhouette users, just get in touch with one of us. Last year we had one girl come in and create letters for her 4H project, it certainly makes it easier that using stencils or cutting out your own!

Castlemakers July Class

Chris and his brother add the battery leads to their LED Chaser (think Cylon moving eyes).
Chris and Cameron add the battery leads to their LED Chaser (think Cylon moving eyes).

One of our main goals as a non-profit is providing educational opportunities to the community. Like our Learning to Solder class in May and our upcoming Introduction to 3D Printing Design July 8th (2-4 pm at the makerspace).

In May participants built an LED Chaser (or Larson Scanner), to get first hand experience soldering electronic components, LEDs, and an integrated circuit on a circuit board. Thanks to George Edenfield of Putnam County Auxiliary Communications (local Amateur Radio group) for leading the class.

For the Intro to 3D Printing Design class, we did a prototype class last December when we had kids design & print holiday ornaments. Everyone had fun and we learned that too many people trying to print 3D parts at once can take a long time! We’ve added 2 more 3D printers in the makerspace, more laptops, and changed to a quickly printing basic design that offers more learning.

Demo ring for our upcoming class, other orientations will be used also!
Demo ring for our class,  but decoration can be reoriented…

In the upcoming class (for both old and young) you’ll be designing a custom ring to fit your finger and adding an adornment on top. It’s a great way to learn the basics in Tinkercad and prints in 4-5 minutes per ring depending how elaborate you get. Special thanks to the Maker Lab at Chicago Public Library for the idea – like almost all makerspaces they willingly exchange information and share ideas to help the maker movement!