Hello there,
I am new to freelancer but not with my skills. I am working on raspberry pi currently and its GUI design in QT. I find myself the be st candidate for your project as i am already familiar with all the electronics sensor with electronics engineering background. and GUI design in QT is my Work that i just love. I am the one who understands both software and hardware parts of your project.
I have recently done one project which includes GUI showing time and temperature reading from pi. Also pi is connected to a GPS, RTC, LDR, Arduino, every data has to be displayed in the GUI. skype id - ajmi.srg.