Interesting stuff

Just random interesting stuff found along the way...

• Huge list of sensors with links

• Hydrophobic sprays and filters

  • Rain-X
  • Ultra-Ever-Dry - note: see xylene/acetone warning here
  • Nasiol
  • NeverWet

• PCB & Fabrication

  • OSH PCB printing - upload design, anyone can get them printed
  • PCB printing & assembly:
    • PCBway
    • CircuitHub

• Speakers & Microphones

  • Mic that uses 3 µA in sleep mode - could be really useful for audio trigger
  • Various speakers
  • MEMS microspeakers - potential use for siren feature
  • IA-610 DSP MEMS microphone
  • Ultrasonic MEMS microphone
  • Sound compass
  • Audio triangulation (see also, and also)
  • MEMS microphones - select MEMS & Sensors on left

• Energy harvesting and storage

  • Great info about solar panels, MPP, and batteries
  • Decent 3V3 regulator
  • Backup power capacitors
  • PV harvester on a chip - note: apartheid regime
  • Murata super-cap type things
  • Power a motor from an LED!

• Communications

  • 3G antenna to WiFi
  • SDR on Mac
  • Physical web address
  • Wirepas - decentralised radio connectivity for devices (mesh network)
  • Puck.js
  • RuvviTag
  • Board-mounted tiny antenna for LoRa (via this forum post)
  • Loads of SMD antennas
  • Near Field Comms

• Distance & Mapping

  • Tiny radar sensors ~4m range
  • Leaflet velocity overlay
  • Drone LIDAR 20m
  • Time of Flight Sensor and processor
  • God-mode proximity sensors

• Cameras, Imaging, Spectrometer

  • Basics of Thermal Imaging
  • IMEC hyperspectral imaging
  • FIR sensor array
  • Hi-res thermal imaging sensors
  • Mobile phone based spectrometer - Hue values FTW
  • mini spectrometers, etc
  • hyperspectral CCD; 165 to 1100 nm
  • Hyperspectral MEMS camera - note: apartheid regime
  • C12666MA - 340 to 780 nm (~$300)
  • C12880MA - 340 to 850 nm (~$300)
  • SPM64 - 387 – 903 nm, 776 – 1064 nm
  • AS7262 - 430 to 670 nm (<£7)
  • AS7263 - 600 to 870 nm (<£7)
  • Pyroelectric spectrometer
  • Multi-purpose photodiode
  • Twilight photometer (instructible)
  • MEMS-FPI (Fabry-Perot Interferometer) tunable filter
  • Grid-EYE - IR grid camera
  • CMUcam - open source programmable cameras
  • Infragrams - track plant photosyntesis
  • Airborne VSWIR forest spectrometry

• Ionising Radiation Sensors

  • 400µA SMD radiation sensor, and older version
  • RadBit
  • D411S-20-D0010 - Neutron Detector
  • UVA UVB light sensor MEMS
  • X-ray sensor
  • Kearny Fallout Meter
  • Berkeley RadWatch
  • Radiation dosimeter IC
  • Loads of optical sensors
    • including ionising radiation sensors (gamma detector -> gamma spectroscopy)
    • instructible (alternate diode)
  • Ambient light & UV sensor, with interrupts
  • god mode UVA/UVB sensor - very accurate, low power, UVA/UVB separately measured

• Atmosphere & Particulate

  • How to build test chamber for particle sensors
  • Cheap open source PM sensor
  • Raindrop measurement techniques
  • Python Disdrometer lib
  • Rain and Light sensor - can determine amount of rain optically
  • Sonic disdrometer
  • Measure thickness of cloud via GPS
  • Atmospheric moisture content via GPS, another
  • Calculate cloud base from dew point
  • Calculate dew point
  • Cloud photogrammetry, another, forecasting

• Water quality

  • List of sensors - via

• Stepper motors, rotary slip rings, etc.

  • Sanyo mini stepper motor
  • Small stepper motor – similar
  • Tiny stepper motor – another
  • NMB stepper motor
  • Two stepper motors, 1.5-3V, wired with connector
  • 5cm slider stepper motor
  • 1cm slider stepper motor
  • aperture motor - another

• Biodegradable polymorph mouldable thermoplastic

• MEMS waterproof pressure sensor

• Chirp sonar gesture sensor (more infos) - like Google Soli, but using ultrasonic

• Seismic sensor

• Signal conditioning circuit

• Calibrating magnetometers

• Water usage sensor - includes mesh networking

• Determine type of liquid using pressure sensor

• Environmental water monitoring

• Detect illegal logging with cellphones

• Wallabot - radar that can see through walls

• Open plane tracking db

• Plane spotter (more - useful stuff about wifi-based geoloc)

• Bubble and ball spirit level vials (also circular)

• eInk FPGA controller

• Using Google Soli for Object Classification - could it be used as a disdrometer?

• Plot.ly - a nice-looking wrapper for D3 charts

• Riffle - open source water sensors

• Particle sensing notes

• DustDuino - air particulate

• Air column monitor - wind speed, particulate, VOCs etc

• Heated-wire anemometer (update)

• Non-contact water detector works through walls (XKC-Y25-T12V)

• Calibrating sensors

• Opensource Tricorder

• Weather instruments

• Open Sensor Hub

• I2C over long wires using differential

• Laser scanning microscope

• I2C address changer

• Backscatter radio soil sensor network

• Water-saving irrigation system

• Nice wall-mounted weather display

• Wake on PIR

• Save ESP8266 RAM with PROGMEM

• Modern C stuff for Arduino

• Diode temperature sensor

• TaoBao

• Alternate to voltage boosters

• Aliasing sensor signals

• Negative resistance Tunnel diodes

• Photo tachometer

• Solar MPPT

• Pulse Oximeter

• Parallel port / USB converter

• Omron Mains Switches - manual on/off, but also can be turned off via 5V pulse

• Probe pins

• Using an Arduino as a gateway to program an ATTiny - vid, blog

• MEMS mirror

• optics modules

• proximity, colour, pixel

• IR1011, AK9710 CO2

• In-development gas sensor differentiates between VOCs

• Connectors

• SMT RF Filters

• ESD protection

• Tiny solenoids (fluid pumps), more, miniature pumps

• Optical O2 sensor, calibrated

• Tiny MP3 player from SD card

• Decent HCI switches, buttons, joysticks, more, including some insane sliders, vast array of switches