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Open-Source Desktop CT Scanner

rsz_dsc_0803

Open-Source Desktop CT Scanner

A bit of a story, and then a lot of pictures — by far the most interesting class I’ve ever taken was Advanced Brain Imaging in grad school. As a hands on lab class, each week we’d have a bit of a lecture on a new imaging technique, and then head off to the imaging lab where one of the grad students would often end up in the Magnetic Resonance Imager (MRI) and we’d see the technique we’d just learned about demonstrated. Before the class I was only aware of the structural images that most folks think of when they think of an MRI, as well as the functional MRI (or fMRI) scans that measure blood oxygenation levels correlated with brain activity and are often used in cognitive neuroscience experiments. But after learning about Diffusion Tensor Imaging, spin-labeling, and half a dozen other techniques, I decided that the MRI is probably one of the most amazing machines that humans have ever built. And I really wanted to build one.

12vstepper_LRG

A stepper motor to satisfy all your robotics needs! This 4-wire bipolar stepper has 1.8° per step for smooth motion and a nice holding torque. The motor was specified to have a max current of 350mA so that it could be driven easily with an Adafruit motor shield for Arduino (or other motor driver) and a wall adapter or lead-acid battery.

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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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