DESCRIPTION: This is a smart sensor for both humidity and temperature, and it comes from the factory in a tiny package that incorporates the analog to digital interface. All that the BASIC Stamp has to do is read out the humidity and temperature values through the two-wire digital serial interface. The only math required is a simple scale and offset. The SHT1x is factory calibrated so that it returns temperature with a resolution of 0.01 degrees Celsius and relative humidity with a resolution of 0.03 percent. The accuracy is better than most other sensors too. Worst-case temperature accuracy is +/- 2 degrees C - but in the "room temperature" range the accuracy better than +/- 1 degree C. The relative humidity sensor is similarly accurate: +/- 3.5% in the range 20% to 80%. This is quite remarkable for a low-cost sensor. Excellent for commercial or home-based projects that require such readings.

DESCRIPTION: The active sensing area is a .375" diameter circle at the end of the sensor. The conductive leads are easy to connect to a breadboard or through-hole area. The Flexiforce has an ideal output for A/D conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command may be used with a LOOKUP table or calibration formula to execute some math to make the output useful. The kit includes a 220 ohm resistor, 0.1 microF and 0.01 microF capacitor, Flexiforce sensor, and printed documentation.

DESCRIPTION: The Memsic 2125 is a low cost, dual-axis thermal accelerometer capable of measuring dynamic acceleration (vibration) and static acceleration (gravity) with a range of +/- 2 g. For integration into existing applications, the Memsic 2125 is electrically compatible with other popular accelerometers.

Some of the Memsic 2125's features:

Measure 0 to +/- 2 g on either axis; less than 1 mg resolution
Fully temperature compensated over 0 to 70 degree (C) range
Simple, pulse output of g-force for X and Y axis
Analog output of temperature (TOut pin)

Low current operation: less than 4 mA at 5 vdc

Parallax's new PING)))^TM ultrasonic sensor provides a very low-cost and easy method of distance measurement. This sensor is perfect for any number of applications that require you to perform measurements between moving or stationary objects. Naturally, robotics applications are very popular but you'll also find this product to be useful in security systems or as an infrared replacement if so desired. You will definitely appreciate the activity status LED and the economic use of just 1 I/O pin.

The PING)))^TM sensor measures distance using sonar; an ultrasonic (well above human hearing) pulse is transmitted from the unit and distance-to-target is determined by measuring the time required for the echo return. Output from the PING)))^TM sensor is a variable-width pulse that corresponds to the distance to the target.

Interfacing to the BASIC Stamp and Javelin Stamp microcontrollers is a snap: a single (shared) I/O pin is use to trigger the Ping sensor and "listen" for the echo return pulse. And the intelligent trigger hold-off allows the PING)))^TM to work with the BS1! An onboard three-pin header allows the PING)))^TM to be plugged into a solderless breadboard (on a Boe-Bot, for example), and to be connected to its host through a standard three-pin servo extension cable.

Range - 3 cm to 3 m
Supply Voltage: 5V +/-10% (Absolute: Minimum 4.5V, Maximum 6V)
Supply Current: 30 mA typ; 35 mA max
3-pin interface (power, ground, signal)
20 mA power consumption
Narrow acceptance angle
Simple pulse in / pulse out communication
Indicator LED shows measurement in progress
Input Trigger - positive TTL pulse, 2 μsec. min, 5 μsec. typ.
Echo Pulse - positive TTL pulse, 115 μsec to 18.5 msec.
Echo Hold-off - 350 μsec. from fall of Trigger pulse
Burst Frequency - 40 kHz for 200 μsec.
Size - 22 mm H x 46 mm W x 16 mm D (0.85 in x 1.8 in x 0.6 in)

TCS230-DB color sensor daughterboard is a complete color detector, including a TAOS TCS230 RGB sensor chip, white LEDs, collimator lens, and standoffs to set the optimum sensing distance. It plugs directly into the BASIC Stamp-2pe Motherboard and will also interface to any BASIC Stamp module or Propeller board using the optional DB-Expander SIP Converter (coming soon). The TCS230-DB can detect and measure a nearly limitless range of visible colors. Applications include test strip reading, sorting by color, ambient light sensing and calibration, and color matching, to name just a few.

The TCS230 has an array of photodetectors, each with either a red, green, or blue filter, or no filter (clear). The filters of each color are distributed evenly throughout the array to eliminate location bias among the colors. Internal to the device is an oscillator which produces a square-wave output whose frequency is proportional to the intensity of the chosen color. Read the documentation below and check out the Color Matching Demo for more detailed information.