Sensors

Common sensors that we have used with the Sense/Stage MiniBee include:

  • Accelerometers, both analog (e.g. Analog Devices ADXL series), and digital ones (LIS302DL and ADXL) over I2C.
  • Light sensors – these are variable resistors that can be hooked up to an analog input with a voltage divider.
  • Paper pressure sensors – these are variable resistors, made from conductive paper and foil, that can be hooked up to an analog input with a voltage divider.
  • Stretch or bend sensors – these are variable resistors, made from conductive rubber, that can be hooked up to an analog input with a voltage divider.
  • Potentiometers – these are variable resistors, that can be hooked up to an analog input.
  • Ultrasound distance sensors – these emit an ultrasonic signal and receive it again and measure the time it takes to come back, thus measuring the distance between the sensor and a reflecting object. The time measurement is done in the MiniBee, and functions for this are included in the firmware.
  • Infrared distance sensors – these emit an infrared signal and receive it again and measure the time it takes to come back, thus measuring the distance between the sensor and a reflecting object. These sensors output an analog voltage and can be hooked up to an analog input.
  • Passive Infrared (PIR) motion detector sensors – these sensors detect infrared emission as emitted from warmblooded animals, such as humans. They detect a difference in this emission between different angles to the sensor, thus detecting someone moving in that area. They output a digital on/off signal, that can be connected to a digital input.
  • SHT15 – temperature and humidity sensor – this is a rather accurate temperature and humidity sensor that communicates with the MiniBee throug a custom serial protocol, which is implemented in our firmware library .
  • Analog temperature sensor (LM315) – this outputs an analog voltage which can be connected to an analog input.
  • Resistive humidity sensor – these are variable resistors, that can be hooked up to an analog input with a voltage divider.
  • Force resistive sensors (FSR) or pressure sensors – these are variable resistors, that can be hooked up to an analog input with a voltage divider.

Output modalities we have used with the Sense/Stage MiniBees include:

  • LEDs, common ones and RGB LEDs, controlled through PWM or digital outputs.
  • Cold cathode fluorescence lights (CCFL), through PWM.
  • Electro-lumeniscent wire, through PWM.
  • DC motors, throug PWM.
  • Stepper motors, using the StepperMotor library for Arduino.
  • Valve control, by using digital outputs.