Thinking in Progress:
Measuring 150 Amps With A DIY Shunt
Speccing a 150A@5V power supply, the NJE MK750
Tags:
electronics
, highcurrent
Date Published:
September 06, 2021
Supercharging Capacitors
Who has time for 5RC?
Tags:
electronics
Date Published:
August 09, 2021
Sugar-Metering My First Watermelon
Tastes like Capri-sun! Bonus: Lychee and Longan
Tags:
refractometer
, sugarinfruit
Date Published:
July 27, 2021
How to get access to your Fitbit data
Navigating a slightly complicated process for API noobs
Tags:
tutorial
, API
, fitbit
Date Published:
July 26, 2021
Comparing The Sugar Percentage Of A Peach vs. Sugary Drinks
Testing out a sweet scientific instrument
Tags:
refractometer
, experiment
, sugarinfruit
Date Published:
July 23, 2021
Paper Delivery: Sinusoidal Skin Displacements
Retro papers you probably missed, but shouldn't have!
Tags:
mechanoreceptors
, litsearch
Date Published:
June 22, 2021
Finding My Pacinian Corpuscles in vivo
If only Galen had had a vibrating motor
Tags:
mechanoreceptors
, haptics
, LRA
Date Published:
June 16, 2021
Recreating Traxion
Only 8 years late!
Tags:
electronics
, haptics
Date Published:
June 02, 2021
MacGyvering Electronics From Merch
TFW no batteries :(
Tags:
electronics
, macgyver
Date Published:
May 31, 2021
Stimulating the Merkel Discs: Nerve stimulation using TENS
The Firm Handshake-inator 3000
Tags:
EMS
, TENS
Date Published:
May 23, 2021
Implementing Body Channel Communication Pt. 3
Reinventing the radio and using touch as the antenna
Tags:
hci
, bcc
, microcontroller
, biosig
Date Published:
May 15, 2021
Outro to Intro to Woodworking
Crate, shelf, stool
Tags:
woodworking
, cmu
Date Published:
April 29, 2021
Implementing Body Channel Communication Pt. 2
Look Ma, no shared ground!
Tags:
hci
, bcc
, microcontroller
, biosig
Date Published:
April 27, 2021
Implementing Body Channel Communication Pt. 1
Harnessing the body's conductivity as a signal path
Tags:
hci
, microcontroller
, bcc
Date Published:
April 17, 2021
Intro to Intro to Woodworking
There's always money in the banana stand
Tags:
woodworking
, cmu
Date Published:
March 24, 2021
MPR121 Touch Sensing Across Barriers
Testing capacitive coupling across various barriers
Tags:
mpr121
, touchsensitive
, sensor
, hardware
Date Published:
March 13, 2021
5050 LED Strip Teardown
Repurposing an LED light strip controller and power supply
Tags:
LEDs
, teardown
, electronics
Date Published:
February 20, 2021
Blink Detection Using Infrared Reflective Sensors
Preliminary experiments in focus tracking.
Tags:
infrared
, Arduino
, sensing
, blinkdetection
Date Published:
February 12, 2021
Calculating the expected value of the PA scratch offs
It's ok, all proceeds pay for the benefits of older residents of Pennsylvania
Tags:
lottery
, wasteofmoney
, probability
Date Published:
February 04, 2021
Physical Word Length Calculator
Determine how much string you'll need to spell out a phrase
Tags:
calculator
, p5js
, cursive
Date Published:
February 01, 2021
Detecting instantaneous frequency is hard
Major blockades to fast, effective BCI
Tags:
thoughts
, bci
, dsp
, fft
Date Published:
January 31, 2021
Touch Reactive LEDs
Electronic piano, anyone?
Tags:
hci
, touchdetection
, LED
Date Published:
January 29, 2021
Oversampling vs. Averaging for Noise Reduction
Spoiler: always oversample.
Tags:
dsp
, eeg
Date Published:
January 24, 2021
Quantifying Interface Speeds
Comparing the information transfer rate of the keyboard, mouse, and other input devices.
Tags:
bci
, hci
, interfaces
Date Published:
January 21, 2021
Trying out various peak detection techniques for the SSVEP
Garbage in, garbage out.
Tags:
ssvep
, eeg
, bci
, dsp
Date Published:
January 18, 2021
EEG fails in the prescence of household EMI
I am beginning to have doubts on the feasibility of everday BCIs...
Tags:
eeg
, bci
, emi
, thoughts
Date Published:
January 17, 2021
The first generation of handheld barcode scanners — with laser tubes
History of the LS1000 and MH290, and a demo of the 2nd!
Tags:
history
, electronics
Date Published:
January 14, 2021
New EEG Technique: Phase-rectified signal averaging
Basic method of aligning waves helps when averaging out noise from long time-series
Tags:
ssvep
, bci
, eeg
, paperhighlight
Date Published:
January 13, 2021
Preliminary 5W LED Tests
Projecting 5W of light onto a wall — DIY Projector
Tags:
projector
, projectlog
, LED
Date Published:
January 06, 2021
Fresnel Lens
Making flat lenses using special surface ridging
Tags:
optics
, lenses
, projectlog
Date Published:
January 05, 2021
Hello World for Brain-Computer Interfaces
Detecting alpha wave activity with EEG to predict whether my eyes are open or closed
Tags:
BCI
, EEG
Date Published:
December 31, 2020
Working with BrainFlow pt. 1
A new way to stream OpenBCI data to Python
Tags:
projectlog
, EEG
, Python
Date Published:
December 30, 2020
Testing out some high power LEDs
Casting light on far away surfaces using 3W LEDs
Tags:
electronics
, LED
, projectlog
, wallscreen
Date Published:
December 28, 2020
Easy Button Hack Pt. 1
Learning about SD cards, transistor audio amps, Arduino sleep and interrupts
Tags:
projectlog
, easybutton
, arduino
, microcontroller
, audio
Date Published:
December 24, 2020
Arduino Function Generator: Square Wave with Variable Duty Cycle
How to make a free, customizable square wave generator from a microcontroller you already have
Tags:
arduino
, microcontrollers
, testequipment
, tutorial
Date Published:
December 23, 2020
Improving noisy EEG data through single channel averaging
How to get rid of Gaussian noise using a single electrode's measurements
Tags:
bci
, signalprocessing
Date Published:
December 18, 2020
Coin vibration motors arrived!
Now I can do "haptic feedback"
Tags:
hardware
, motor
, haptic
Date Published:
December 14, 2020
Playing sounds with an Arduino, speaker, and no amplifier
LM386 audio amplifier? I 'ardly know her!
Tags:
arduino
, microcontroller
, audio
, hack
Date Published:
December 13, 2020
Analog Electronics Basics: Scaling Voltage Rails
What to do when your circuit outputs ±5V but your ADC only takes 0-5V
Tags:
analog
, electronics
, opamps
Date Published:
December 08, 2020
Photoplethysmography (PPG) Tutorial
A guide on how to pronounce the word, and how to implement it in Python
Tags:
tutorial
, CV
, heartrate
Date Published:
December 07, 2020
Exploring USB-A breakout cables
The normal USB cable
Tags:
electronics
Date Published:
December 04, 2020
Sledding on a table
We had no sled, but we did have an extra folding table
Tags:
life
Date Published:
December 01, 2020
Myo3 Noise Specs
1.24µV of noise at 500,000x gain
Tags:
myo3
, projectlog
Date Published:
November 29, 2020
Javascript Libraries
What do you mean everything is a global???
Tags:
webdev
, javascript
Date Published:
November 28, 2020
Teensy DAQ: ADC Oversampling on the Teensy 4.0 microcontroller
300 kSPS to 1 kSPS faster than you can say "free bits"
Tags:
hardware
, microcontrollers
, Teensy
, ADC
Date Published:
November 27, 2020
Myo3 initial tests
It's like they always say, the hard part's the software
Tags:
myo3
, projectlog
, PCB
Date Published:
November 26, 2020
Speed Check — Generating a list out of a range out of a len
Why does matplotlib set_data not take an iterable :(
Tags:
speedcheck
, matplotlib
Date Published:
November 25, 2020
Myo3 Assembly
Putting together the 3rd iteration of my EMG sensor
Tags:
projectlog
, myo
, PCB
Date Published:
November 22, 2020
Histogram Equalization
Using all your dynamic range to make black and white images look sssickkk
Tags:
CV
Date Published:
November 20, 2020
Creating panorama images manually, pt 2!
Better stitching by doing something really easy I just forgot to consider
Tags:
CV
, OpenCV
Date Published:
November 18, 2020
Creating panorama images manually
Experiments in holography
Tags:
CV
, OpenCV
Date Published:
November 17, 2020
Playstation Eye does not work for MacOS!
Mac doesn't play nice with weird USB webcams :(
Tags:
problems
, hardware
Date Published:
November 15, 2020
Spudging PCB Stencils for Beginners
How to lay out 50 components on a board really fast
Tags:
electronics
, PCB
, tutorial
Date Published:
September 14, 2020
Privacy screen
Only cool kids can see this laptop!
Tags:
facerecognition
, miniprojectlog
Date Published:
September 09, 2020
Digital Holograms
Displaying 3D images on a 2D computer screen
Tags:
projectlog
Date Published:
June 18, 2020
Speed Check (calling Python Built-in functions)
Calling str, type, etc. is free... right?
Tags:
speedcheck
Date Published:
May 25, 2020
Variable resistance tests of Velostat/Linqstat
Testing the effects of bending, twisting, and touch on the conductive plastic Velostat.
Tags:
wearables
, conductivefabric
, velostat
Date Published:
May 17, 2020
Speed Check
What's the fastest way to record a stream of strings in Python?
Tags:
projectlog
, speedcheck
Date Published:
May 10, 2020
Parts arrived for Altered Perceptions
How would you like to see the world from a new pair of eyes?
Tags:
projectlog
, alteredperceptions
Date Published:
November 13, 2019
Spin Tank Proof-of-Concept Test
A new configuration for some old kinds of armor
Tags:
projectlog
, spintank
Date Published:
August 20, 2019
Advanced addition and speedup of neural network evaluation
Linear functions and what it means for Neural Network acceleration
Tags:
projectlog
, advancedaddition
Date Published:
August 01, 2019
The miracle of brain-computer interfaces
How BCIs can give us more arms
Tags:
thoughts0
Date Published:
July 28, 2019
Simple arithmetic addition with neural networks
I have stumbled across a new way to add numbers.
Tags:
projectlog
, advancedaddition
, new
Date Published:
July 17, 2019
The exploration of unexplorable search spaces
Any hard problem can be solved by randomly guessing — if you're good enough at guessing.
Tags:
thoughts0
Date Published:
June 30, 2019
First Post!
WHAT'S GOING ON I'M MAKING A WEBSITE
Tags:
stateoftheblog
Date Published:
June 24, 2019