We investigated electrodeposited polypyrrole (PPy) thin films. Tin-oxide (TO) and Au were used as deposition substrate and it was found that film morphology and roughness are strongly influenced by substrate choice. We determined the electrical conductivity of PPy, films in Au/PPy/Ni, Au/PPy/Al, TO/PPy/Ni and TO/PPy/Al devices and estimated the positive charge carrier mobility and charge carrier concentration in PPy. Comparing the onset potentials for oxidation in the cyclic voltammograms of PPy and poly(3-methylthiophene) we constructed the energy levels diagram of PPy.