For homework this week, start brainstorming ideas and gathering materials for your 3rd project, a Halloween costume (or prop). Team up or work in a group if you like! Working in groups can facilitate problem solving while maximizing creative energy, and create more time for project presentations/discussion on October 31.
Your costume can use any of the Arduino techniques we’ve learned so far. If your costume ideas involve interaction, research switches that may be applicable to your situation. More than one may apply, and if so, weigh the pros/cons of each. Please read the Switches chapter of the Instructables Electronics Class to learn more about switches, and the Variable Resistors/Potentiometers section of the Resistors lesson. Many analog sensors are some kind of variable resistor. You should start acquiring materials/parts for your prototyping/work session next class.
Some ideas to get you started:
- Vibration Sensor Switch
- Tilt Ball Switch
- Microphone (volume sensing)
- Piezo Element can be used as a knock sensor (Secret Knock Gumball Machine, for example)
- Pressure sensor (FSR) also available bigger and extra long
- Flex sensor (FSR) also available longer
- PIR motion sensor
- Capacitive Touch Sensor or 5 or 12, can be done with code alone, copper tape makes great contacts, or other materials like conductive textiles and conductive paint
- Magnetic reed switch (door sensor)
- Hall effect sensor detects magnets
- Softpot ribbon sensor or circular version
- Muscle sensor
- Build-your-own with a sensor film kit
- Hannah Perner-Wilson’s encyclopedia of thoughtfully handmade sensors
Some sensors are more complex and may contain their own circuitry that communicates with your Arduino in a way more like serial communication than the previous inputs/outputs you’ve learned so far (accelerometers, digital temp/humidity sensors, etc.). While these more complex sensors are not strictly forbidden, their use is discouraged in this project in favor of more creative problem solving that will ultimately result in deeper understanding of the subject material. Rule of thumb: if you need to install a library to use the sensor, consider a simpler solution this time around.
Your homework posts (one per group) are due Wednesday 10/16 by 8pm, and should include:
- your group constituent members (and group name, if you have one)
- your top three favorites from your Halloween costume brainstorm (with sketches)
- what components/switches/sensors you could use in each (outputs and optional input)
Don’t forget that your midterm dossiers are due on Wednesday, 10/24!