v1.0 Mar 2018
1
Ohmite FSP Series Integration Guide: Force Sensing Potentiometer
Integration Guide
Force Sensing Potentiometer
To be used in conjunction with current FSP series data-sheets available at www.ohmite.com
Page 1: ...2018 1 Ohmite FSP Series Integration Guide Force Sensing Potentiometer Integration Guide Force Sensing Potentiometer To be used in conjunction with current FSP series data sheets available at www ohm...
Page 2: ...Force Sensing Potentiometer FSP Overview Page 3 2 FSP01CE FSP02CE Introduction Page 4 3 FSP01CE FSP02CE Construction Page 4 4 FSP01CE FSP02CE Connection and Sampling Page 4 5 FSP01CE FSP02CE Recommen...
Page 3: ...nner Adding additional opportunities for user interaction haptic control lighting and integration methods Interfacing to an FSP sensor is simple and can be achieved using a number of different methods...
Page 4: ...or best results a microcontroller with an analog to digital converter ADC module should be used to measure the position and relative force of touch along the length of the sensor The pins shown in Fig...
Page 5: ...ng the measured analog value of the position APOS the values for R1 and R2 can be approximated and the value of RW the resistance which represents the inverse of the force can be calculated 4 2 3 Meth...
Page 6: ...es Linear relationship between applied force and ADC output Linearity continues beyond 1kg finger force Applying force near one end of the pot where the voltage is high results in a different ADC outp...
Page 7: ...ET layer also with conductive dielectric and an FSR ink print A mounting adhesive on the rear The main active area of the Ring Sensor is a ring of printed carbon ink divided in three arcs by three ele...
Page 8: ...ed in the previous section will be left floating Thus if the furthest pin is pin 4 as shown in Figure 9 on the previous page then Configure pin4 as an input pin so that it floats Drive pin 2 to high v...
Page 9: ...Sensing Potentiometer Integration Guide Force Sensing Potentiometer 9 Contact Headquarters 27501 Bella Vista Parkway Warrenville IL 60555 USA Toll Free 1 866 9 OHMITE International 1 847 258 0300 Fax...
