ECE51 - Group 3 - NPN Touch Sensor

This is another design for a different type of touch sensor. This design utilizes two NPN transistors. Contact between two electrodes needs to be made in order to switch the LED on - this can be achieved by direct contact of the electrodes, or the circuit can be closed by human touch, as shown in the video.

The circuit diagram can be found here:
http://www.siongboon.com/projects/2007-11-29_touch_sensor/touchcircuit6.gif

This is pretty much a backup design in case the QT113 ICs we ordered don't work. We're trying to figure out how to best use this design with the conductive paint/glue we've got.

Category:

Science & Technology

Tags:

• Electronics
• Duke
• ECE51
• NPN Transistor
• Touch Sensor