Replacing a mechanical switch with a digital output touch sensor is a lot easier if the system designer does not have to write any code. With that goal in mind, Microchip Technology developed its MTCH102-5-8 capacitive touch controllers. The 2-, 5- and 8-channel controllers replace mechanical buttons with a simple digital output in a hardware-only […]
Traditional touch sensors technologies include capacitive, resistive, infrared touch and surface acoustic wave. However, moisture, changes in surface temperature or materials or other surface variations can prevent these sensors from detecting the proper pre-determined threshold to trigger a touch event. For example, capacitive touch technology in a cell phone can be ineffective when your finger […]
The innovative optical edge sensor PosCon 3D by Baumer is the most powerful in its class. It will reliably master tasks which previously required complex laser measuring systems. Additionally the PosCon 3D provides impressive convenience in both operation and installation. Multiple capabilities make the sensor a versatile solution to reliably detect edge positions and object […]
Human machine interfaces in wearable devices, remote controls, gaming devices, track pads and more frequently use projected-capacitive technology for touch sensing. In addition to glass front sensor construction for optics and light touch, projected capacitive technology has multi-touch capability that enables gestures and uses printed circuit board (PCB) sensor design to provide a cost-efficient touch […]
In this Frank Talk about Sensors, Randy Frank talks to Raymond Wiley, of SUN-Tec America, about the use lamination technology for improved touch sensor manufacturing. To hear the discussion, click here. For more information about SUN-Tec America, click here.
Using its Quantum Tunneling Composite (QTC) material, Peratech has developed a sensor design sensitive enough to detect the pressure of a finger on the top of a 0.1-mm stainless steel or 0.5-mm glass sheet. Mounted behind the sheet, the QTC material’s resistance changes when pressure is applied to the top of the sheet. The QTC […]
The Embedded System Conference was held in conjunction with Sensors Expo 2011 in Chicago. Rob Ostafia, Group Leader Curriculum Development at Microchip Technology explains the company’s products for capacitive touch sensing through several demo boards. For more information about Microchip Technology touch sensing, click here. To watch the video, click here.
At Sensors Expo 2011, Randy Frank gets the scoop on the Industry’s first multi-touch controller for resistive touchscreens from Vijendra Kuroodi, principal systems architect at ROHM Semiconductor. With their ability to implement two-point operation and intuitive gesture control, the BU21023/BU21024 series is quite impressive. Since the controllers address resistive touch screens, they provide an alternative […]
At Convergence 2010 in Detroit Mich., Freescale Semiconductor’s Lydia Ziegler demonstrates how a software library controlled touch sensing can be used for slider and rotary switches in a vehicle’s center stack. The capacitive sensing uses simple metallic electrodes and the software completes the system. The software is an integral part of Freescale’s Xtrinsic touch sensing […]