Don't have an account? Register now to chat, post, use our tools, and much more.
» STEM Behind Hollywood: Earth Impact! for TI-84 Plus C SE
» New HP Prime Revision C and Wireless Module
» WiFi globalCALCnet with the Spark Core
» Projects of the Month: September 2014
There are 101 users online: 2 members, 87 guests and 12 bots.
Bots: MSN/Bing (1), Magpie Crawler (3), Googlebot (8).
RSS & Social Media
You must log in to view the SAX chat widget
STEM Behind Hollywood: Earth Impact! for TI-84 Plus C SE
Published by KermMartian on October 10, 2014 at 1:58:01 PM CST | Discuss this article (1)
Cemetech has posted a number of articles on TI's STEM Behind Hollywood initiative, starting with the first announcement of the project, and continuing with the overwhelmingly positive reception at T^3 and the first two-part activity, Zombie Apocalypse. For Cemetech Programming Contest #12, Lorenzo "Ordelore" Orders planned to port the Earth Impact! activity, as detailed in his contest topic. Unfortunately, after learning about the gravitational force equation that governs cosmological movement, he was forced to drop out of the contest. I was inspired by his code, and ended up starting from scratch to create a TI-84 Plus C Silver Edition version of Earth Impact!
In Earth Impact!, students learn about gravitational force while they work to keep an asteroid from striking the Earth. This port of the Earth Impact! activity brings the excitement and education of TI's STEM Behind Hollywood program to the TI-84 Plus C Silver Edition. Made for Doors CSE 8.1 or higher, it provides the same engrossing lessons about Newton's law of universal gravitation, density, force, and other STEM topic that the TI-Nspire activity provides. Besides the on-calculator activity itself, it includes thorough teacher notes and a student handout, both heavily adapted from TI's original material. We would love to hear your feedback in the attached topic if you use this activity in your own classroom, and we plan to soon port Zombie Apocalypse, Body of Evidence, and Science Friction! to the TI-84 Plus C Silver Edition. We tip our hats deeply to Texas Instruments and their hard work in creating the original material for this activity.
Earth Impact! STEM activity for the TI-84 Plus C Silver Edition
New HP Prime Revision C and Wireless Module
Published by tifreak8x on October 7, 2014 at 1:31:11 PM CST | Discuss this article (1)
Back in May, bhtooefr posted on Cemetech about a boondoggle with the HP Prime: Revision A devices could not use the promised wireless module. User balrog popped into IRC this morning and dropped a bit of news on us; Europe now has a new revision of the Prime in Europe. This promised Revision C fixes problems that they were having with the wireless kits that they have, and it seems the wireless kit itself is now available for purchase.
Announced in June 2014 in a Google Groups post, this new revision remains difficult-to-find in the US. The wireless device itself is described on educalc.net. Available information stresses that the wireless device, which strongly resembles the bright yellow wireless module for the TI-Nspire, can only be used for base station-to-calculator communication. Calculator-to-calculator communicate remains possible only with a wired cable.
WiFi globalCALCnet with the Spark Core
Published by KermMartian on October 5, 2014 at 12:00:08 PM CST | Discuss this article (26)
Two weeks ago, the folks from Spark gave us two Spark Core WiFi development boards. These unique boards are based around TI's CC3000 chip, and also include an STM32F103 microcontroller for running user code. One of the key selling points of the Spark Core is that it includes a library providing compatibility with the Arduino Wiring "language". It was the work of two weeks to port my Arduino globalCALCnet bridge (first announced here in 2011) to the Spark Core, then integrate the functionality of the gCn Bridge code.
Previously, connecting a local-area CALCnet2.2 network to the wide-area globalCALCnet network required an internet-connected computer. A piece of software running on the computer, called the gCn Bridge, was responsible for encapsulating incoming packets ("frames") from calculators in TCP/IP packets and sending them across the internet, and unpacking incoming packets to deliver back to calculators. A previous Cemetech project attempted to use the ENC28J60 Ethernet module to directly connect CALCnet2.2 to globalCALCnet, but that project was put indefinitely on hold in 2013. This current project achieves all the goals of that project, and more: it provides a computer-free way to connect calculators to the internet, and lets the calculators independently configure the bridge device as well. The two components that were necessary to make this work are the Spark Core firmware itself, modified and expanded from the original Arduino gCn bridge firmware, and a Bridge Configurator program written in TI-BASIC that is used to set the WiFi credentials and local and remote gCn hub names on the Spark Core.
You can view a video of the device in action below, as well as download the Spark Core firmware and the gCn Bridge Configurator program at the links provided. I look forward to seeing more exciting developments based on this project.
Downloads and Information
WiFi Bridge firmware for Spark Core
Bridge Configurator program
Video of WiFi gCn in action
Projects of the Month: September 2014
Published by tifreak8x on September 30, 2014 at 8:52:46 PM CST | Discuss this article (7)
Hello again, Cemetechians! This past month we've had quite the list of projects being worked on, started, and finished! (Maybe not in that exact order...). As always, we encourage you to take a look at these projects that their authors put time and effort into, and let them know what you think about their progress.
Until next month, keep them keys tapping and get that code written, and make sure you post plenty of updates so we can see the amazing things you are working on!
© Copyright 2000-2014 Cemetech & Kerm Martian :: Page Execution Time: 0.022971 seconds.