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• Signal To Noise
  Signal to Noise is a regular (monthly?) newsletter assembled by our own Danny O'Br
  312 bytes (36 words) - 13:50, 4 February 2011
• Signal to Noisebridge
  1 KB (193 words) - 10:12, 21 April 2023

Page text matches

• Meeting Notes 2015 01 13
  * '''Signal is now a Member of Noisebridge.''' * Signal - privacy & anonymity, Deidentification and machine learning classes. Now w
  12 KB (2,110 words) - 17:03, 15 January 2015
• Analog EEG Amp
  ...ls will have artifacts or noise issues. Probably it will still amplify EEG signal sufficiently well to serve as an actuator for other projects. ...ime so it can be used as an actuator. The test task will be using some EEG signal (probably [http://en.wikipedia.org/wiki/Beta_wave beta power]) to buzz open
  7 KB (1,049 words) - 20:05, 11 May 2012
• Meeting Notes 2014 10 28
  * Signal - Here in support of Aaron and against the institution that killed him Signal - Naomi and I have pinged the EFF about the Aaron Swartz hackathon. His bir
  19 KB (3,547 words) - 14:00, 6 November 2014
• Meeting Notes 2015 02 24
  ..._Notes The 334th Meeting of Noisebridge]. Note-taker: Nthmost; Moderators: Signal. * Signal: helping maintain the library.
  15 KB (2,574 words) - 19:33, 25 February 2015
• Meeting Notes 2014 10 07
  * Signal - I found a reference to an alternative energy company in the meeting notes Signal - Yesterday on the mailing list it came up that we need new projectors. For
  18 KB (3,239 words) - 14:38, 14 October 2014
• Meeting Notes 2014 10 21
  ...g_Notes The 332nd Meeting of Noisebridge]. Note-taker: Nthmost; Moderator: Signal. * Signal, I like the hacktivists over there. Machine learning, hacking the planet.
  10 KB (1,671 words) - 19:45, 28 October 2014
• DreamTeam/Reading/Dump
  -- "A 90nm CMOS Bio-Potential Signal Readout Front-End with Improved Powerline Interference Rejection" -- "A Negative Feedback Signal That Is Triggered by Peril Curbs Honey Bee Recruitment"
  94 KB (13,217 words) - 19:49, 21 October 2015
• Meeting Notes 2014 12 23
  * Signal - picking up some IGG stuff to deliver stuff to Europe via trip to 31C3 ...bs, and a modified version of Five Minutes of Fame. Contact nthmost and/or signal for more info.
  7 KB (1,252 words) - 14:12, 26 December 2014
• Meeting Notes 2014 09 30
  Note-taker: Nthmost; Moderator: Signal. * Signal - machine learning, NLP, biology, long walks on the beach flying kites.
  14 KB (2,479 words) - 21:21, 14 October 2014
• Meeting Notes 2014 12 09
  ...o anarchist. here b/c i was told there'd be beer [because you brought it --Signal] * Signal - i like ML, nat lang processing, community development, hacktivism, let's
  12 KB (2,083 words) - 13:53, 10 December 2014
• Meeting Notes 2015 04 07
  * Signal - Likes to work on de-identification and would like to talk about other way Signal: Doesn't foresee a problem, expecting high attrition rate. Greet people, su
  7 KB (1,155 words) - 20:32, 7 April 2015
• Meeting Notes 2018 10 23
  Moderator: Signal * Signal: goes by Lemons artist formerlly known as signal joined by victoria and nthmost today.
  13 KB (2,285 words) - 22:49, 26 October 2018
• Big LED Screen
  ...us apart, within each sequence, 5 peaks @+5V, 4us each high, otherwise the signal is low. * SCK (PB5) - this sends lcock signal to the daughterboard
  13 KB (2,278 words) - 07:41, 5 January 2022
• Pulse Necklace 17Nov2009
  ...(the Tektronix 2235 works, the 1241 didn't) to our open-ecg-project output signal and tried it with various electrodes. ...sticky stuff is secure, signal does not vary with movement. If it's not, signal will show noise when you move.
  2 KB (347 words) - 22:40, 17 November 2009
• BioBoard/Equipment
  ...; as with the thermocouple, you need an amplifier because of the millivolt signal. This led me to his source for sensors (http://www.americanmarineusa.com/ ...loaded with enough dye that they are almost opaque) would have a stronger signal (phosphorescence up to 0.5-1% of the brightness of the illuminating LED).
  18 KB (2,974 words) - 08:34, 26 September 2020
• DreamTeam/Reading
  "Neural Network Parallelization on FPGA Platform for EEG Signal Classification" == Signal Processing ==
  44 KB (5,999 words) - 00:02, 9 January 2020
• OpenEEG
  ==Custom EEG software: signal processing and pattern analysis== *I think it might be possible to write a gnuradio (software) signal processing block for EEG purposes - [http://www.gnu.org/software/gnuradio/d
  9 KB (1,506 words) - 21:11, 7 July 2020
• IAM
  * Analog signal output (0-5VDC, 0-2Hz) ...tart growing in amplitude. As soon as they stop walking, no matter where, signal outputs return to baseline.
  7 KB (1,013 words) - 07:31, 21 July 2013
• DreamTeam/Brainduinov2
  Seperate modules provide signal amplification and filtering via op amps (Analog Devices OP4177, Burr-Brown ...rs of differential amplifiers boosting the approximately 100 microvolt EEG signal by a factor of 1000. Maximum input up to +/- 2.5 millivolts is amplified t
  3 KB (460 words) - 21:53, 31 October 2018
• Meeting Notes 2015 08 11
  * Signal - I am Saturday! this saturday! * Signal talks about this Saturday's Punk Rock rewnewal party. We're now the only pu
  8 KB (1,462 words) - 16:08, 18 August 2015
• Almond
  upnpd[1554]: Shutting down on signal 15... Jan 1 00:06:25 upnpd[1554]: Shutting down on signal 15...
  37 KB (5,304 words) - 15:55, 19 March 2017
• Pulse Necklace 29July2009
  ...er side of the sensor with low to moderate pressure. When it does give a signal, the LED seems to blink at *half* the speed of your heart, i.e. each beat c ...schematics and BOM, along with nice graphs showing how great the heartbeat signal is.
  3 KB (603 words) - 13:23, 30 July 2009
• Pulse Necklace 12Aug2009
  ...ead board, put on some Red Dots, and it works! We were able to observe 1V signal spikes in time with hearts. ...to the other side of the chest or up to pendant location still worked, but signal was about 1/4 the size. Neck and arm electrodes showed nothing. We did get
  2 KB (399 words) - 21:37, 12 August 2009
• Pulse Necklace 15Oct2009
  ...kOhm. We also moved the signal electrode below the breast too and got good signal. Now we know why chest strips are great: the readings were good and the pla
  2 KB (323 words) - 17:00, 15 November 2009
• Meeting Notes 2014 11 11
  ...at it's really about communication. In this instance I didn't get a strong signal, they need to be amplified. I didn't get as strong an indication that it wa ...ket of blindness amongst the folks that I brought it up would have trumped signal amplification.
  22 KB (4,157 words) - 23:23, 18 November 2014
• Meeting Notes 2015 06 02
  * Signal aka General Populous- you may or may not have seen me dressed as a vulture ...led to give folks an idea if the space is open. First pass at some sort of signal that is externally observable. No storage, no public stream. 4 people with
  14 KB (2,380 words) - 20:49, 2 June 2015
• Meeting Notes 2015 06 09
  * ([[User:Signal|Signal]]) * [[User:Signal|Signal]] - You don't need to be a member to sink money into Noisebridge. You can s
  10 KB (1,569 words) - 15:01, 10 June 2015
• Security Camera
  Now with new and improved signal! ...erter and maybe increase the supply voltage. The amplifier also provides a signal to Oh Happy Days.
  1 KB (191 words) - 21:19, 5 January 2022
• Hologram/Dash
  +EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal. +EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
  4 KB (439 words) - 15:22, 21 May 2017
• OtherElectronicProjects
  ...a fun hack to mix the outputs of function generators and other audio range signal generators. ...rminals in each corner of the cube and a stick with an end that presents a signal source to the liquid. There's always the CPU method of spitting bit slices
  6 KB (953 words) - 11:54, 20 November 2008
• Sensebridge
  **#*What modulations of the signal are possible; intensity, spacing, direction, timing...? Based on that, what ...nal can the brain interpret meaningfully (too much noise vs. too weak of a signal)? Based on that, what is the <em>practical</em> bandwidth that we might exp
  5 KB (699 words) - 14:57, 3 March 2022
• UltraEcho 2009Aug24
  ...oot limit). BUT, bouncing the signal off our rough-textured wall made the signal much more robust - cone nearly 180 deg, and audible as far away as we can g Taking it outside, we discovered that distance is no problem - the signal can be clearly heard at 25 feet (and probably much further). BUT, the angl
  3 KB (439 words) - 21:36, 24 August 2009
• Pulse Necklace 15Nov2009
  ...with bypassing the Open ECG chip at filtering/amplifying the bio-electric signal. We worked off of the lab document [http://www-univie-ac-at_cga_courses_BE5 ...t only lowered the amplitude. We were using red dot electrodes, so the ECG signal was entering the chip reliably. More work to be done on this front.
  4 KB (679 words) - 09:50, 20 April 2012
• DreamTeam
  [https://sites.google.com/site/wmvanvliet/tutorials/eeg-signal-analysis EEG Data Analysis tutorial with Marijn van Vliet] and [https://git <br> [http://www.dspguide.com/ Free book on digital signal processing]
  14 KB (2,037 words) - 09:09, 5 January 2022
• DopplerCan
  ...owd starting jumping up and down, within 1-2 meters of tower, then Doppler signal would maximize. This maximal state could then set off some fantastic effec All Dopplers will have a RJ45 cable linking power and analog signal from a host junction box placed on one of the supports. Primary 5VDC and GN
  3 KB (537 words) - 21:46, 17 July 2013
• Maker Faire Build Night 2015-02-26
  ...alling in a ringer 2015-02-26 .jpg|none|640px|thumb|Finally we picked up a Signal]] ...sually find hackers who tend to be down to help others with projects. With Signal's help we made more progress and got a few tips on how to solder the LED st
  4 KB (730 words) - 01:41, 3 March 2015
• Meeting Notes 2015 08 04
  * Signal - I am brief. I hack on things related to biomedical interpretation. * torrie - generally a large "block" is a good signal that the community isn't being communicative enough about the thing. nobody
  10 KB (1,770 words) - 20:55, 4 August 2015
• Lightintg Analog Details
  0.8 volts near the end of the cycle. Six comparators compare the integrated signal, V_out and turn on their The voltage divider on opamp #1 divids the 12Vrms input signal by 10. (With R14 providing fudge factor) So we end up with:
  1 KB (265 words) - 21:45, 12 November 2008
• RFID Hacking/parallax
  *** this is an input signal (tying this to GND works fine if you just want the reader to ''stream'' dat *** the leading / means that this signal is ''active low''
  1 KB (245 words) - 19:01, 18 April 2009
• Compass Vibro Anklet Directions
  ...and the wire to connect them up. The pager motor array receives power and signal from the shift register, which activates one of eight pager motors. The pa ...nect to a pin on the Arduino which is capable of PWM. (PWM lets a digital signal simulate analog, and the enable pin needs analog input if you want to be ab
  18 KB (3,190 words) - 19:29, 23 November 2010
• Hello World in Synthetic Biology
  |Rods and cones turn light into electrical signals which go through massive signal processing before sent to optical nerve ...act differently in other species as well. Obviously there must be complex signal processing libraries with nerves as the retina is using these.
  7 KB (1,073 words) - 14:43, 12 May 2009
• UltraSonicHearing
  ...two of these chips, they are clearly the heart of the thing, dividing the signal into the audible range.</li> ...- "High-Speed CMOS Logic Phase-Locked Loop with VCO", this is probably the signal conditioner between the mic and the binary counter.</li>
  10 KB (1,639 words) - 19:29, 23 November 2010
• Pulse Necklace 21July2009
  ...works, in fact they do a lot of magic in the software, and say that if the signal is noisy the BPM will be wrong. ...is way they deal with ambient light fluctuations. But I don't know if the signal we want (reflectance difference due to pulse) would survive this treatment.
  2 KB (270 words) - 15:37, 21 July 2009
• Pulse Necklace 29Sept2009
  We added the new pins and some signal-averaging for the ECG signal. We also added a 100-point rolling average with stdev calculation. The LE
  4 KB (577 words) - 15:45, 10 June 2012
• Projectors
  ...urrently has no remote. It faces the west wall and accepts power and video signal from the southwestern corner of the room. ...t the power button twice with the stick, or let idle for 5 minutes with no signal for automatic shutdown.
  2 KB (287 words) - 20:17, 10 August 2014
• Spacebridge/pre-flight checklist
  # Confirm green light on Opentracker to indicate APRS signal # Confirm red LED flashes on radio to indicate VOX mode signal transmission
  2 KB (237 words) - 11:25, 7 January 2022
• Spacebridge/Onboard Equipment List
  Signal input cable PTT radio signal cable
  2 KB (226 words) - 11:24, 7 January 2022
• HInternet/TR2
  signal: -50 dBm signal: -50 dBm
  5 KB (795 words) - 20:53, 24 September 2013
• Gate
  This is some ethernet cable split and used as low-voltage signal wires. Added to this, the red LED and front buzzer share a signal wire pair. Green and yellow are used for these. The [[wp:LED]] has bias, a
  2 KB (296 words) - 18:09, 27 June 2023
• Audio Hacking
  ...lyester-film capacitors (they look like chicklets or little boxes) for the signal path, but except in rare cases where a tantalum capacitor is called for (e. .... These are pricey (up to $15), but let your pedal isolate itself from the signal path when not in use ([http://www.generalguitargadgets.com/index.php?option
  2 KB (371 words) - 11:48, 1 February 2011