The Parkin group have been developing Fourier Transform Voltammetry (FTV) as a highly sensitive and selective technique to deconvolute the mechanisms of electron transfer in proteins and enzymes. We now make these measurements using commercial potentiostats. This talk will describe our latest results in studying cytochrome c6 and plastocyanin using FTV to understand why higher plants have selected plastocyanin over cytochrome c6. Our latest advances in covalently attaching proteins to electrode will also be describe. Finally, the applications of this toolkit in sensing will be described, including how we can create artificial redox proteins for biosensing via simple labelling techniques.