HEGduino uses red/infrared light sensing to determine the changes in the blood-oxygen levels in your brain in real time. Armed with this feedback, you can control these changes directly and literally exercise your brain! HEGduino brings Hemoencephalography (HEG) biofeedback into the easy, affordable, and hackable realms. This is designed to be able to be built by anyone with a soldering kit and a steady hand as a ground-up introduction to the science and the electronics.

Technical Specifications + Sensor Board: + Flexible circuit board to conform to the shape of your head and headgear + 650 nm 20 mA Red LED + 950 nm 20 mA IR LED + OPT101 monolithic photodiode + Connected to receiver by Molex connectors/wire + Controller Board: + ESP32-based control with either + Adafruit Huzzah32 (16 MB flash but less I/O) + or WeMos Lolin32 V1.0.0 (4 MB flash but more I/O) + ADS1115 16-bit 860 sps ADC + I/O breakouts for a maximum of: + 32 Inputs / Outputs + 26x digital pins (3.3 V) - all PWM capable (two occupied by LEDs) + 18x analog pin + 3x UART + 3x SPI + 2x I2S + 2x DAC + 2x I2C (1 occupied by the ADS1115) + 1x 5 V output + ESP32: + ESP-WROOM-32 from Espressif + Up to 240 MHz dual-core microprocessor + 4-16 MB SPI flash memory + Sleep mode consumption: 5 μA + Connectivity: + Wi-Fi: 802.11 b / g / n + Security: WEP, WPA / WPA2 PSK / Enterprise + Maximum power for data transfer: 19.5 dBm @ 802.11b, 16.5 dBm @ 802.11g, 15.5 dBm @ 802.11n + Sensitivity max. reception: -97 dBm + Bluetooth 4.0 Classic / Low-energy (BLE) + Integrated cryptographic chip supporting AES / SHA2 / Elliptical Curve Cryptography / RSA-4096 algorithms

Spectra is an open source biomedical imaging system that is both safe and easy to use. It allows hackers and scientists to experiment with one of the technologies used in medical imaging — electrical impedance tomography (EIT). For the first time, anyone who wants to explore the fascinating world of medical physics can do so from their own home, without a multimillion dollar CATSCAN.

Features & Specifications + Precise and highly configurable sensor hardware + Can be configured to use up to 32 electrodes. + Measures at 160,000 samples per second. + Each impedance measure is made using differential referencing and 16-bit resolution. + Includes automatic temperature calibration to ensure impedance accuracy. + Includes an accelerometer for motion mitigation. + Built for safety and ease-of-use + DC power removal filters meet IEC60601-1 safety specifications. + Compatible with a 3.5 V, 850 mAh battery (not included) for improved portability. On-board circuitry allows charging via the supplied USB cable. Up to 12 hours of battery life, depending on the specific use case. + Support for Bluetooth Low Energy (BLE) to accommodate wireless data transmission. + Flexible open source software + Easy to install software supports time series impedance measurements, bio-impedance spectroscopy, and electrical impedance tomography, between 80 Hz and 80 kHz, with up to 32 electrodes. + Supports three different types of tomographic reconstruction: Graz Consensus, Gauss-Newton Method, and Back Projection. All three can be run in realtime and can be configured with any number of electrodes (e.g., 8, 16, or 32). You can record for analysis offline, and run in real-time. + Hardware includes Serial Wire Debug (SWD) programmers for easy firmware re-programming. + Portable design + Tiny, portable PCB measures approximately 2” by 2” and comes with a plastic enclosure. + Comes with a small, cylindrical ‘phantom’ tank (140 mm diameter, 60 mm height). + Comes with a flexible electrodes for imaging things that don’t fit in the phantom.

StereoPi is an open source stereoscopic camera based on Raspberry Pi. It can capture, save, livestream, and process real-time stereoscopic video and images. StereoPi opens up countless possibilities in robotics, AR/VR, computer vision, drone instrumentation, panoramic video, and more.

Features & Specifications + Raspberry Pi Compatibility: + Raspberry Pi Compute Module 1 + Raspberry Pi Compute Module 3 + Raspberry Pi Compute Module 3 Lite + Raspberry Pi Compute Module 3+ 8 GB / 16 GB / 32 GB eMMC flash + Raspberry Pi Compute Module 3+ Lite + Dimensions: + width x length: 90 mm x 40 mm + height: 23 mm (standard edition) / 15 mm (slim edition) + Video: + input: two 15-pin CSI-2 camera connectors + output: HDMI + Camera Support: + Raspberry Pi camera V1 (OV5647 sensor) + Raspberry Pi camera V2 (Sony IMX 219 sensor) + HDMI video capture module (single mode, on Toshiba TC358743XBG chip) + Connectivity: + GPIO: 40-pin classic Raspberry Pi header + USB: 2 x USB Type-A, 1 x USB pin header + Ethernet: RJ45 jack + Storage: + microSD card slot (accessed by Raspberry Pi CM3/3+ Lite) + Power: + 5 VDC input via two-pin header + manual power switch + Software: + firmware update via Micro USB connector + runs standard Raspbian + excellent Python support + tons of example code

Features & Specifications Specifications + Payload capacity: 500 g, 17.6 oz + Flight time: Two days (no night flying) + Inflated dimensions: 1830 mm x 990 mm x 1120 mm, 72” x 39” x 44” + Volume: 1040-1080L, 36-38 cu ft Flight conditions: Winds from 0-20 mph Features + Standard 1/4-20 tripod mounts for payloads + Puncture- and abrasion-resistant polyurethane envelope + Designed for easy transport both deflated and inflated + Moored balloon, not an aircraft under FAA rules + No registration required

The Pixblasters MS1 is the ultimate FPGA-based controller for giant video displays built by addressable RGB LED strips. It connects to any computer as an ordinary monitor and drives up to 16,384 LEDs at 60 fps. Multiple MS1 controllers can be easily chained to drive immense video displays built of hundreds of thousands of perfectly synchronized LEDs. The MS1 displays any visual content with absolutely no programming required, and with no burden on the driving computer that is free to run digital signage players, media players, and other software at the full speed. The LED displays controlled by the Pixblasters MS1 can be remotely managed by the Digital Signage software anywhere in the world. The MS1 controller is designed for both, enthusiasts and professionals, and enables anyone with minimal technical skills to build giant video LED displays with no soldering required.

KEY FEATURES + Any computer and any OS: Raspberry Pi, PC, media boxes, phones… – connects to any computer as an ordinary monitor. + No programming: Plug-in the monitor cable and the controller will smoothly drive LEDs (WS2812B, SK6812) at the maximum frame rate of 60 fps. + Display management: Use any Digital Signage Software and add layered screen divisions, text, animations, video, RSS… + Remote control: Control it remotely anywhere in the world through network interfaces of the driving computer. + Display size: A single MS1 can control 4.7/14.7 m2 (~ 17/48 ft2) display built of 60/30 LEDs/m. Chained controllers can control displays measuring tens and hundreds of m2. + Display speed: LEDs work at their maximum speed and perfectly synchronized, no matter the number of LEDs and chained MS1 controllers, or the display size. + Display content: Anything that shows on a computer monitors shows on the LEDs as well. No need for special software for anti-aliasing, fonts, image processing… + Display resolution: A controller drives the selected part of the monitor image built of 16,384 differently arranged LEDs (pixels). Chained controllers support higher resolutions. + Open-source FPGA demo*: Use the hardware platform for experimenting with and learning about RGB LED diodes.

Features & Specifications + FPGA: Xilinx XC7A35T-2FGG484 + On-board RAM: 512 MBytes, 32-bit wide DDR3-800 + Video Ports: 2 x HDMI type A inputs, 1 x HDMI type A output, 1 x HDMI type D output. One input/output pair configured for in-line ‘NeTV mode’ video filtering. + Max Video Bandwidth: 1920 x 1080 @ 60 Hz + Developer I/O: PCI-express 2.0 x4 with “hax” GPIO extensions on optional/unused pins, 100Base-T ethernet, micro-USB, microSD, JTAG + Power: Either 12 VDC via barrel jack, or 12 VDC via PCI-express; 10 W max operating power + SBC: Optional Raspberry Pi 3B+ for seamless JTAG configuration and overlay video generation + HDL: Optimized for migen/LiteX Python-based hardware description language + Dimensions: 160 mm x 120 mm x 51 mm (optional plastic case outer dimensions)

Features and Specifications + Xilinx Zynq 7012S Single-core ARM + FPGA (dual-core 7015 optional) + 667 MHz ARM Cortex-A9 + 55,000 programmable logic cells + 2.5 Mb block memory on FPGA + 120 DSP slices + Open source hardware - Schematics and PCB artwork will be available for free. + Open source software - Linux board support package sources will be available for free. + Compact form factor: 110 mm x 75 mm + Wide input power supply: +5 V to +18 V + 3 x SYZYGY standard ports + 28 I/O each + 2 x clock pairs each (could also be used as I/O) + 1 x SYZYGY transceiver port + 18 I/O + 2 x GTP receive pairs (up to 3.75 Gb/s) + 2 x GTP transmit pairs (up to 3.75 Gb/s) + 1 x transceiver reference clock pair + 1 GB DDR3 memory + 1 x Gigabit Ethernet (via RJ-45) + 1 x USB Type-C OTG + 1 x USB (serial console for ARM) + SYZYGY SmartVIO support with two groups + microSD card slot + JTAG + 8 x LEDs + 2 x User I/O pushbuttons + 1 x Reset pushbutton

Features & Specifications The FPGA processor board and the video mainboard form the core of the RGGBer Dev Kit. The FPGA processor board connects to the video mainboard via two high-speed, board-to-board connectors. It expands the FPGA’s PLL clock outputs, dedicated global clock inputs, I/Os, and power pins to various applications. A detailed pin-out reference is available in the GitHub repo.

Features & Specifications + FPGA: + Xilinx Spartan-6 S6LX45T + Memory: + 256 Megabytes of DDR3-1600 RAM + HDMI: + inputs: 2 + outputs: 2 + resolution: 1080p30, 720p60, 1280×1024@60Hz + DisplayPort: + inputs: 1 + outputs: 1 + resolution: up to 4096 × 2304 × 30 bpp @ 30 Hz + compatible with dual-mode DisplayPort / DisplayPort++ protocol + Storage: + microSD card holder + 128-Mbit SPI flash for configuration data + USB 2.0 Device: + Cypress FX2 chipset supported by fully FOSS toolchain + real-world transfer rates of 30-40 Megabytes/second + serves also as a USB JTAG programmer and a USB UART adapter + USB 2.0 OTG: + supports both host and device operation + compatible with many USB devices (e.g. keyboards and flash drives) + Gigabit Ethernet: + unique MAC address + Expansion: + TOFE + PCI-Express connector (not signal-compatible) + 19 differential, length-matched pairs + 3.3V and 12V power rails + I2C interface for expansion board auto-detection and configuration + dedicated I/O bank on FPGA reduces peripherals conflict + access to global clock signals + Dimensions: + standard mini ITX mounting + Default Firmware: + demo functionality; USB controller set to be a USB JTAG programmer + License: + Creative Commons BY-SA + Reference: + hardware design repository + hardware documentation (source repository)

+ GRIPT is two things in one – it’s the first ever smartphone grip, so that you can create in-focus, handheld photos, and shoot smooth videos without awkwardly holding your phone or dropping it. GRIPT gives you the ergonomics of a dSLR or mirrorless camera at a fraction of the size and cost. Dedicated cameras always have some sort of grip, wrist strap, or neck strap to make sure your camera doesn’t bite the dust, why should our phones be any different? + GRIPT is also the best tripod mount available for smartphones. Why would you want to mount your phone to other equipment? It unlocks new possibilities for what you can make! Shoot in low light without a flash, create flawless panoramas, use a shoulder rig to make fluid video, make hyper-lapses of the clouds rolling in, or even mount it on a mini tripod on your desk to livestream or FaceTime with the family! The possibilities are endless.

The book we are producing is 12” x 12”, perfect bound, soft cover, offset print just outside of Portland, OR, printed on domestic paper. It will feature minimal amounts of text, to give more focus on the photos.