Joutsenlaulu

Johdanto

Yhteistyöprojekti. Arduino ja Art in Engineering. AE vrt EA; Electronic Arts. Lisäksi Arduinoja ammattikoululaisille.

Art in Engineering

Johdanto

Keksi ~20 erilaista projektia tehtävineen ja lisähaasteineen. Materiaaleina

• Arduino
• WS2812B led-nauha
• Servot
• Vastukset
• Moottorinohjainyksikkö (H-silta [L9110, DRV8833, TB6612FNG etc], MOSFET)
• IC555 ja muut halvat mikroprosessorit

Visuaalisuus

DIY Laser Steering Module for Arduino https://www.instructables.com/DIY-Laser-Steering-Module-for-Arduino/

Voice coil actuator

1. Salvage an HDD voice coil
2. Build your own voice coil
   • Enamel copper wire (30–38 AWG depending on size), Two neodymium magnets, A lightweight moving arm and a tiny mirror. $F=BIL$. The mirror: A piece cut from microscope cover glass, first-surface mirror, reflective Mylar film on thin plastic etc. Even a few hundred milligrams makes a noticeable difference in speed. For precise positioning, add feedback Hall sensor, optical sensor or use the HDD's existing flex cable and sensors (more challenging).

• https://www.youtube.com/watch?v=bl1e54QGJk4

Servo mirrors

LED strip can be installed on everything and coded.

Ne hienot messinkisatelliitit

Tuntosarvet

Reaktiivinen taide

• etäisyysanturi
• kapasitiivinen kytkentä
• (rf-taajuksinen) antenni, theremin
• kamera, Ardu-cam/ arducam.

https://www.youtube.com/watch?v=0f4-wBjSedk

Ping pong ball display which uses Raspberry Pi, but could be done using Arduinos also.

Liikkuvat härpäkkeet

• Liikkuva hiiri, mato
• Käsiä liikutteleva pahviukko
• Naaman ilmeet ledeillä

Äänet, musiikki

• Drummer (servos)
• MIDI controlled
• Blower, whistler (much more complicated=
• Synth
  • PWM Audio
  • Direct Digital Synthesis (DDS) [this is how many digital synthesizers work]. Store one cycle of a waveform (sine, sawtooth, square, etc.) in a table and step through it at different rates to produce different pitches.
  • DAC Output
  • FM Synthesis; the famous Yamaha DX7 technique. One oscillator modulates the frequency of another: The result can sound like Bells, Electric pianos, Brass or Metallic percussion.
  • Subtractive Synthesis; the classic analog synthesizer approach.
  • Wavetable Synthesis. Instead of a single waveform, you store many waveforms and smoothly transition between them.
  • Physical Modeling. Instead of storing sounds, you simulate the instrument itself. Examples include Guitar strings, Drums, Flutes, Pipes. A well-known technique is the Karplus–Strong algorithm.
  • Libaries: Mozzi, PCM, TMRpcm

Audio Amplifier

• LM386. Costs around €1–3, runs from 5–12 V (can be powered from USB), needs only a handful of external components and can drive a small 8 Ω speaker.
• PAM8403. About €1–2, 5 V USB powered, very efficient (little heat), stereo. Up to about 3 W per channel into 4 Ω speakers.
• MAX98357A. Digital I²S audio. Excellent sound quality. No PWM filtering needed. Tiny. Cons:

Not supported by an Arduino Uno without significant effort, better suited to ESP32 or RP2040 boards.

• An old computer speaker. Probably the easiest option. The amplifier is already built. Simply feed the Arduino output into the AUX input (or replace the input wiring).
• DIY transistor amplifier (Capacitor, 2N2222 or BC547 or BC337 or 2N3904)

Amis

Ammattikoulu

• Rekka-auton peräkärryn eri kulmien eri kiihtyvyydet mutkissa
• Erilaisia simulaattoreita
  • CAN: Dashboard Diy Car Simulator
  • CAN / OBD2 reaaliaikainen datan mittaus
• Kotiautomaatio
• Mopon viritys
  • Kts Asoftaaja (esim https://www.youtube.com/watch?v=DCizm3att6A)
• Sähkötekniikkaa
• Äänentoisto

Viitteitä

• https://koodikaravaani.fi/