Peripherals/Sensors
There are a large variety of sensors which can be added to the XO using the MIC_IN port. These may include;
- Touch/Pressure - Extended information
- Light - Use it for inverse square law experiments or for studying polarizers, reflectivity, or solar energy.
- Temperature
- Humidity
- Barometer - Can be used for either weather studies or for lab experiments involving pressures close to normal atmospheric pressure
- Soil Moisture Sensor - Some soil moisture sensors use capacitance to measure the water content of soil
- Hall Effect (magnetic field) sensors - By using a rotating sensor tip it is possible to measure both transverse and longitudinal magnetic fields.
- Oscilloscope - With amplification?
- Ultrasonic - Water level monitoring, create real-time motion graphs position, velocity and acceleration.
- Light Gate
- Water Purity Monitor
- Metal Detector
- Accelerometer - This is great for studying collisions or any motion with larger accelerations.
- Charge Sensor - the Charge Sensor can make quantitative measurements. Numerical measurements improve many electrostatics experiments such as charging by induction, charging by friction, and charging by contact.
- CO2 or O2 Gas Sensor - These probes could measure changes in CO2 levels during plant photosynthesis and respiration. You could monitor changes in CO2 levels occurring in respiration of organisms from crickets to humans
- Conductivity Probe
- pH Sensor
- [http://wiki.laptop.org/go/Peripherals/Sensors/
- Salinity Sensor - Measures the total-dissolved salt content in water.
