Biosignal Amplifier Ready for Plug-and-Play

Mirage335 Biosignal Amp Host Schematic (detail)HacDC’s biohacking group has developed a new, ultra-low-noise biosignal amplifier and released it under the GPLv3.

The Mirage335 Biosignal Amp makes brainwave (EEG), heart (ECG), and muscle (EMG) detection all possible without reconfiguration.

Mirage335 Biosignal Amplifier Setup

Lead designer, mirage335, writes:

This system is geared for maximum performance close to theoretical limits. Ideally, the lower noise floor allows us to confirm the presence or absence of weak biosignals, especially electroencephalography signals, when they become difficult to detect with other systems.

Analog (direct-to-scope) and USB (direct-to-computer) outputs are provided. USB functionality is provided by an Arduino compatible ATMega32U4 and LTC2440 24-bit Analog-to-Digital converter.

EEG and ECG (Wikimedia Commons)

    Other features:

  • USA companies provide all parts, including circuit boards
  • Safety oriented architecture. Multiple isolation barrier and surge suppressor layers.
  • Active electrodes, wet and dry designs.
  • Extreme common-mode rejection measures.
  • Lowest noise amplifiers, based on new thermal noise research.
  • Future proof. Modular SATA data cable architecture provides smooth upgrade paths.
  • Isolation amplifier. Safe, high-resolution analog output for lab equipment (eg. oscilloscopes), sound cards, microcontrollers, and ADCs.
  • USB support, based on ArduinoDAQ (ATMega32U4 + LTC2440).
  • Efficient, high-order IIR biquad filters notch out 60Hz, 30Hz and high-frequency noise, right at the embedded microcontroller.
  • Wide supply voltage support. +/-6V to +/-15V
  • Resistor programmable gain. 13000x default.

Mirage335′s effort was supported by these members of our biohacker group, contributing to the design, testing, and funding of this versatile device:

  • Shawn Nock
  • Sharad Satsangi
  • Stuart Washington
  • The Real Plato
  • Logan Scheel

Usage instructions are available on the wiki.

Complete schematics, PCBs, BOMs, 3D printable enclosures, firmware, USB driver software, and documentation hosted on Github:

Additional documentation is available on the project’s webpage.

Join the HacDC biohacking community’s mailing list: https://groups.google.com/a/hacdc.org/forum/#!forum/meat

Mutant fish survive Hudson River Toxins!

Mutant Fish

It appears that our friends at NYC Resistor and Alpha One Labs may have some interesting neighbors – apparently some fish in the Hudson River have been mutating in order to evade the high levels of dioxin and other toxins in the water. http://www.sciencenews.org/view/generic/id/69976/title/Packing_away_the_poison

The problem, of course, is that as soon as something eats _those_ fish, they get an even heftier dose of the toxin – and so it goes. The article over at Science News is actually pretty interesting, and demonstrates how living systems can quickly evolve to adapt to new circumstances. As always, I am a sucker for mutant monsters and toxic waste…