Sensor Circuit Modules

Temperature Sensor/Fan Control Board 3.2" x 2.00"

This compact 3.2" x 2.00" board contains all the circuitry necessary to provide students with a strong foundational knowledge in both NTC thermistor and solid state temperature sensor theory and operation. The board also contains two dual op amp ICs that allow students to gain valuable experience in sensor signal conditioning. There is a MOSFET driver circuit that allows students to control a 12VDC fan directly from the board. The fan driver circuitry is controlled by an adjustable op amp Schmitt trigger that allows the students to experiment with a basic deadband controller, using either the NTC thermistor or the solid state temperature sensor as the input transducer. The board is designed specifically for student experimentation, with easily accessible test points and jumper locations.

There are several detailed laboratory exercises designed specifically for use with this board, one of which involves interfacing with the C8051F330GM Development Board. These exercises can be downloaded upon purchase of this product.

$89.95

Reflective Photosensor Circuit Module 1.6" by 1.2"

This compact 1.6" by 1.2" board features the TCRT5000 Reflective Optical Sensor, manufactured by Vishay Semiconductors.  While the board has very practical industrial applications as a non-contacting limit switch or proximity sensor, it is designed primarily for student experimentaion.  The board contains the familiar LM311P high-speed voltage comparator and a potentiometer which allows for sensitivity adjustment during experimentation.  The board provides a discrete (digital) output signal that pulses to a logic high when a reflective object approaches the sensor.  A  small (3mm) LED indicator illuminates with this condition, serving as a visual aid in sensitivity adjustment.  The board also contains easily accessible test points, allowing the student to directly monitor and compare the outputs of the TCRT5000 sensor and the sensitivity adjustment potentiometer.  The board has mounting holes for direct connection to machinery, but also contains a right-angle pin header for easy attachment to a prototyping board.


There is a short laboratory exercise designed specifically to demonstrate the operation and possible applications of this board.  Click the Preview Learning Materials button to view the exercise along with additional technical material.  These exercises can be downloaded upon purchase of this product.


There are several detailed laboratory exercises designed specifically for use with this board, one of which involves interfacing with the C8051F330GM Development Board.

$29.95

Click the Preview Learning Materials button to view samples of the course materials and technical documentation for each product. These materials will be sent to the customer free of charge upon purchase of the product.