Multichannel Touch Sensors

Oppenheim, Matthew (2010) Multichannel Touch Sensors. Circuit Cellar - The Magazine For Computer Applications, 1 (234). pp. 46-53. ISSN 1528-0608

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Abstract

A versatile, modular and scalable multi-channel touch sensor system is demonstrated. The touch sensors are constructed using the Qprox QT1103 10 channel capacitive touch sensor IC. A working 100 channel touch sensitive keyboard using five of the sensor boards is detailed. Device integration is enabled using a dsPIC (dsPIC33FJ128GP706) controller board. A stand alone 20 channel device incorporating Bluetooth wireless communications is also demonstrated. This incorporates a LM3658B battery management IC circuit with a rechargeable lithium battery. Correct device operation is verified using a novel port expander arrangement based on the MCP23S17 port expander IC.

Item Type:
Journal Article
Journal or Publication Title:
Circuit Cellar - The Magazine For Computer Applications
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qa75
Subjects:
ID Code:
42462
Deposited By:
Deposited On:
10 May 2010 21:04
Refereed?:
Yes
Published?:
Published
Last Modified:
03 Jul 2020 00:22