The Design of a Customizable High-intensity Light Sensor for the NXT Platform
Mentor:Paul Dixon, Professor of Physics, California State University, San Bernardino
We describe an iterative design process of a new high-intensity NXT light sensor capable of pulsed light communication using a super-bright LED source. The first phase of the project involved reverse-engineering an existing NXT light sensor and specifying the interfaced signals. The second phase involved building a SPICE-based simulation of the existing sensor, and then modifying it to accommodate the super-bright LED and matched photo-transistor. The third phase involved bread-boarding a functional prototype of the sensor and validating it by interfacing it to an NXT system. The fourth phase, which is ongoing, involves doing the PCB layout of the final board, and building 3D printed models of the enclosure and variable light-guiding attachments. Our objective is to develop an open-source design that anyone can reproduce and use.