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Cemetech will once again be showing off coding and hardware hacking with graphing calculators at World Maker Faire in New York City this September 22nd and 23rd. Our volunteer team has reduced Cemetech's presence at the Faire to such a science, this article is sure to be a blatant copy-and-paste of past news articles about our appearance at World Maker Faire. Our first appearance at Maker Faire was now six years ago, with rather rudimentary displays; in the years since, we have gone through many iterations of our demos and displays, ending up with what I humbly believe is a fairly polished booth. Over the years, I've been joined by dedicated Cemetechians Alec "qazz42" Szigeti, Tim "geekboy1011" Keller, Thomas "elfprince13" Dickerson, Nathaniel "Eeems" van Diepen, Fred "mr womp womp" Desautels, Danial "Pieman7373" Leath, and Botboy3000, who have volunteered their time, effort, and money to help make our Maker Faire booth a success. We have garnered some modest press coverage, we have collected a few new Cemetech members and reconnected with old ones, but most importantly, we have introduced probably tens of thousands of Faire visitors to the fact that they can learn programming, electronics, and other STEM subjects with their graphing calculators. We're excited to continue that mission this September.

This year, we're bringing back all of our proven displays. Here's what we're displaying:
  • TI-DCC (Calculator-Controlled Model Trains): This evolution of a few-years-old project to control model trains with graphing calculators no longer requires an Arduino. Thanks to hard work by geekboy1011 and Iambian, TI-84 Plus C Silver Edition calculators can directly bitbang the DCC (Direct Cab Control) protocol, allowing the calculator to control a train through a simple H-bridge motor driver.
  • Whack-a-Mole: Built with a TI-84 Plus C Silver Edition, a TI MSP432 Launchpad, and lots of RGB LEDs and light sensors, the Whack-a-Mole project was a hit at World Maker Faire 2015 and T^3 2016.
  • CALCnet Networking Demo: Four TI-83 Plus calculators connected via CALCnet, running the Flourish demo, showing how you can build and test a complex communication protocol with just the hardware your calculators provide, plus a few wires.
  • GPS Demo: A version of the GPS for graphing calculators project, allowing a calculator to communicate with a GPS module to get its latitude, longitude, altitude, the current time, and more.
  • SimpleI/O Demo: First displayed this year at T^3 2016, the SimpleI/O demo illustrates how easy it is to connect an Arduino to a graphing calculator. It shows how a calculator can read the state of pins on an Arduino to see if you're pressing a button or toggling a switch, and how the calculator can in turn control LEDs, motors, and more.
  • Sound Demo: A TI-84 Plus Silver Edition with mobileTunes and songs by Alec "qazz42" Szigeti and Thomas "elfprince13" Dickerson, plus my floppy drive music with a TI-83 Plus project.
  • Interactive calculators for games: a TI-84 Plus CE, TI-84 Plus C Silver Edition, TI-84 Plus Silver Edition, and if any of them are still working, a Casio Prizm, with games and other programs loaded.
  • "Using the TI-84 Plus" and "Programming the TI-83 Plus/TI-84 Plus": As has become traditional, we brought copies of my books as examples of written reference material that new learners could explore outside of Cemetech. "Programming the TI-83 Plus/TI-84 Plus" teaches programming concepts to beginners via TI graphing calculators, giving them a toolbox of programming knowledge they can bring to any programming language. "Using the TI-84 Plus" is the missing manual: a gentle guide to the vast array of math and science features available on TI graphing calculators, grounded in plenty of examples just like the ones students might see in class or on the SATs.
  • Learn to Program demo: A giant calculator emulator, with key entry from a real TI-84 Plus C Silver Edition calculator. Aims to teach visitors to write a simple guessing game in 60 seconds.

Do you have something new you want to see to refresh these admittedly time-worn examples of what we do? Please post in the attached topic with your ideas, or better, make something and bring it! What can you contribute? In addition, if you're in New York City, we encourage you to hop on the 7 train to 111th Street in Queens and come visit World Maker at the New York Hall of Science. We'll be there 10am to 6pm, Saturday and Sunday, September 22nd and 23rd. See you there!

Cemetech's contingent last year: mr womp womp, Pieman7373, Kerm Martian, qazz42, Botboy3000, and geekboy
I think itís time I come and visit this for once! Honestly it looks awesome and Iíd love to come take a look or help if you wanted me to, if I am able to take a trip that weekend (or as long as I donít get nervous about going to a big scary city). Iíll have to see if I can convince anyone to go with me.

and maybe I could show off my stupid BasicNote program? Razz
I would really love to come and meet you guys and hang out. I could see if I could get a ride to NYC, but I am really not sure if my parents would go for that Sad.

Its worth a shot anyways!
I intend on coming back again this year, although no concrete plans have been made on my end as of now. I'm sure the memes will be spicy.
I will admit that the displays could definitely use a makeover, with some of the projects having been completed nearly a decade ago. I understand that we can't really showcase projects made by people who aren't there, since we mostly spend our time there explaining and discussing how the demos work, but there are some very nice projects that have been released in the past couple of years that I think would be interesting to include, particularly a couple CE projects.

Can't wait to see all the cemetech people again! Hopefully I can understand how bit banging works this time Laughing
mr womp womp wrote:
I[...]but there are some very nice projects that have been released in the past couple of years that I think would be interesting to include, particularly a couple CE projects.
I'm perfectly fine with showcasing projects from people that aren't there. The only caveat is that hardware projects tend to be much more impressive than software projects at the Faire. If anyone has recently completed hardware projects they'd be willing to temporarily ship to me for the Faire, I'd be happy to take good care of them, have us show them off, and return them after the Faire.

Can't wait to see all the cemetech people again! Hopefully I can understand how bit banging works this time 0x5
Likewise, and happy to keep explaining it.

Michael: I hope you can make it!
Want me to send you my calculator compatible fan? Laughing
See y'all there!
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