IFD:Interaktive Elektronik 2012/1. Meeting

Examples for Sensors and usage

Reusing Hardware - Keypad: http://hackaday.com/2012/04/11/adding-an-electronic-lock-to-a-diy-book-safe/

Magnetism

Reed Switch: (a Magnet Sensing Switch) http://www.youtube.com/watch?v=sl8ItZxGM6E

Hall Effect Sensors (Magnetic Sensors - non mechanical, opposed to the reed switch) http://www.youtube.com/watch?v=9BFdGtvo9JE (too long to watch for class, but good explanation)

• switching
• analog field strength.

Electronic compass. / Magnetometer

Position and Movement

Theremin Sensor: http://interface.khm.de/index.php/lab/experiments/theremin-as-a-capacitive-sensing-device/

Distance Sensor (Ultrasonic): http://hackaday.com/2012/04/04/make-your-rc-car-drive-itself-with-this-simple-brain-swap/ http://www.arduino.cc/en/Tutorial/UltrasoundSensor

Sharp IR Distance Sensor: http://luckylarry.co.uk/arduino-projects/arduino-using-a-sharp-ir-sensor-for-distance-calculation/

Audio

Audio Input as Control - Hack Cellphone + Attach Arduino instead Keypad http://hackaday.com/2012/04/03/recorder-controlled-snake-game-played-on-a-nokia-6110/

Wave Shield: http://www.ladyada.net/make/waveshield/

Wave Shield Demo: (SD-Card + Shield) http://www.youtube.com/watch?feature=player_detailpage&v=0mdmasP_Z-Q#t=28s

comes as a Kit (good entry level soldering exercise): http://www.ladyada.net/make/waveshield/parts.html

Mechanical Input:

• Buttons / Switches
• Rotary Encoders
• Hotpot ( Pressure sensitive Potentiometer)
• Force Sensing Resistor: http://www.ladyada.net/learn/sensors/fsr.html
• Bend Sensor:

http://www.youtube.com/watch?feature=player_detailpage&v=CkPekPiA-sc#t=233s

Motors:

Servos: http://hackaday.com/2012/04/03/drummerbot-joins-the-jam-session-when-your-bandmates-are-busy/ http://www.youtube.com/watch?feature=player_embedded&v=c0ZGNsVRgd8#t=70s

Wireless Drills http://hackaday.com/2012/03/30/loudest-telepresence-robot-ever/ more professional - Big Bang Theory: http://www.youtube.com/watch?v=sbypsMauqOY&feature=player_embedded

Solenoids

Stepper Motors DC Motors

Capacitive Sensing

Main Application Today: Touch Screens http://hackaday.com/2012/03/27/piano-box-is-a-digital-synthesizer-made-of-paper/ http://www.instructables.com/id/DIY-3D-Controller/ Capacitive Water Level Sensing: http://www.youtube.com/watch?v=_GPvCxkWgbE

Displays:

LED 7-Segment-Display: http://tronixstuff.wordpress.com/

LCD Shield: http://www.dfrobot.com/index.php?route=product/product&product_id=51 http://www.youtube.com/watch?feature=player_detailpage&v=JDoTn1sLxWQ#t=57s (+ Guide for general LCD Displays)

• search for the display model in case you don't know whether it is easily controllable using arduino.

LED-Matrix (2D) and Lens = Projector. http://tinkerlog.com/2008/08/31/led-matrix-projector/

Arduino 5x7 LED Matrix Display http://www.youtube.com/watch?v=Z6Wv3CiSTfo

TFT with touch screen: http://www.watterott.com/de/28-TFT-Touch-Shield-for-Arduino?x6fe49=0c7f7f09e570ffa02596e7f86f8e8154

Other Connections:

Arduino + Android: (Advanced Level!) http://mitchtech.net/android-arduino-usb-host-temperature-light/

Ethernet Shield: http://arduino.cc/en/Main/ArduinoEthernetShield

• Twitter, Facebook, your own website on The Arduino Webserver, ...
• SD Card for increased storage (Arduino has ownly a few kilibytes, this extends it to 2GB)

Brightness: Photo Diode, Photo Transistor

• fast
• measure current
• photo-transistor: 2 or 3 pins - usually only 2 of them needed.
• photo diode: 2 pin device. Many types visually not to distinguish from LEDs
• polarity does matter.

LDR: Light Dependant Resistor

• slower
• no polarity (usage more simple).

Temperature:

• NTC, PTC: Resistors which change their resistance.
• Many different temperature sensors available (digital interface, analog output voltage)

differ in temperature range, interface, size, ...

Sound:

Microphones

• dynamic, electret or condensor microphones - used for sound in air (flute example)
• piezo (body sound, under water microphones) http://www.youtube.com/watch?feature=player_detailpage&v=NgvG2WWTD8A#t=20s

Knock Tracking: http://www.emeraldinsight.com/journals.htm?articleid=1464099&show=html

Movement

PIR Passive Infrared: Detects changes in temperature (thermal radioation) - widely used to switch lamps on by movement. - in commercial products: often have a brightness sensor included to only work in dark environments)

other Links:

200 Transistor Circuits: http://talkingelectronics.com/projects/200TrCcts/200TrCcts.html

Workshops: Craftraum and 3D-Printer: Craftraum