Abstract: The brain exploits electrochemistry both to process chemical information and to fabricate itself: two functionalities that silicon cannot achieve by itself. In a complementary approach, this presentation reports on a few elements suggesting that electrop olymerization on a chip is a way to gather sufficiently rich chemistries on a miniaturized electronic nose, and that "letting" sensors connect during an application could be a solution for electronics to self-manufacture, reducing its environmental footp rint, while unlocking unprecedented computing functionalities beyond charging and discharging memory cells. By controlling the electrochemical growth of conducting polymers on micro-electrode arrays in a microliter sized droplet, conducting polymers with various chemistries can be confined additively at a micrometer scale on conductimetric devices. Since conducting polymers are both macromolecular materials and doped semiconductors, they intrinsically feature both chemical detection and electrical trans duction, like G-coupled proteins on olfactory receptor neurons, to generate relevant information on a sugar-cube sized electronic nose. Electropolymerization allows growing films on devices, but also interconnecting them with an incredibly versatile way. Branching out from electrodes, conducting polymer dendrites grow by the action of voltage pulses. The temporality of the voltage and the chemistry of their growth medium allow them to form various sizes and shapes, which program their equivalent circuit deeply through their structural evolution. Because polymers can drive both electrons and ions, their fractal structure relates to diffusion-limited capacitive decays, offering a second degree of freedom, unexploited in analog electronics, to program the fading memory time window of a dendritic junction between neighboring devices. By embedding such bio-inspired functionalities as neurogenesis and morphogenesis into electronics, conducting polymers electrochemistry could greatly contribute in fabricatin g electronic chips in a more sustainable manner while unlocking new programming functionalities to generate and process information.