Liberated Circuits
The circuits are painted on a peltier thermo-electric heating device that is itself part of the circuit. The circuit is painted with a water-based silver paint and are coated in resin mixed with black thermochromic pigment, which becomes transparent when the peltier device heats up.
Project page >> http://www.plusea.at/?p=3433
I’m sorry if it wasn’t clearer on this page, but may i ask if the device is powered from the peltier or if its just used to make your pretty epoxy become transparent.
Used as a power source from small heat differentials, these could be used as small wireless, low power, sensors.
Thank you for your awesome website, keep tinkering
Good idea, i never thought of using the peltier as a power source! The peltier is in fact controlled by the circuit, using the heat it provides to make the epoxy turn transparent. Still have to work on getting it to switch polarity and cool the thermochromic epoxy as well.