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For 2016 Maker’s Faire at New York, Will Ware made Megachordotron, a Teensy powered MIDI controller with a touch sensitive keysboard. In his own words: “It’s intended for people (like myself) who are too clumsy to play a guitar“. This design is open-source and he has posted all the files on Github. In the following Youtube video, he shows the demo of his instrument.
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Spectrophotometers are used in scientific studies to quantitatively measure the absorption spectra of a sample object by passing a beam of light through it. [doctek] is a contestant for Hackaday Prize 2016 and his entry for the contest is a DIY Spectrophotometer using Teensy. Building on some good work by others (https://publiclab.org/wiki/spectrometer andhttp://myspectral.com/ among others), this spectrophotometer has it’s own bright light (White LED), and uses a lock-in amp and photodiode as a sensitive detector. A Teensy 3.1 is used as the controller and the interface to transfer data to a pc for further analysis. The LED is a high power white
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Mihir Garimella is participating in the 2015 Hackaday Prize with his Firefly, an ARM Cortex processor powered low-cost flying robot with autonomous navigation. Firefly changes this. Firefly is a low-cost (~$200), open-source flying robot platform for first responders. It includes a base layer of generic algorithms for completely autonomous flight—algorithms for avoiding obstacles and efficiently searching for targets—that are based on how organisms in nature solve the problems of perception and navigation. Users can plug in application-specific modules containing sensors (e.g., thermal cameras for finding people or gas sensors for finding fires or hazardous chemicals) that work with this algorithmic layer
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Al Williams from Hackaday has posted a brief tutorials for beginners on how to get started with ARM programming using the MBED platform. He has used the KL25Z Freedom board from Freescale for illustration in his tutorial. Even though the Arduino was hardly the first 8 bit microcontroller board to support a bootloader and the C/C++ language, it quickly became the de facto standard for hobby-level microcontrollers as well as a common choice for one-off or prototype projects. I’m sure there are a lot of reasons why this occurred, but in my mind there were three major reasons: price, availability of lots of library
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Apodiant’s entry for the 2015 Hackaday Prize is a full features open source industrial camera with Ethernet, USB, and serial outputs, along with an ARM processor for image processing. The major parts are as follows. CPU: i.mx6SL (With GPU, no e-paper interface). I have decided on this due to the ease of use. The Linux distribution is mature and has many active developers. The GPU can also be programmed with openGL. OpenCV will handle CPU image processing. Image Sensor: I have chosen the MT9M021 from aptina because I have the most experience with this imager and the price is suitable for this
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