NOVELTY - Self-regulating pressure source (I) comprises: a chamber (50) enclosing a chemical monopropellant; a movable boss (22) attached to a deformable membrane (18) sealing an air chamber (16), the movable boss and air chamber disposed within chamber; and a catalyst (20) disposed around membrane so as to be covered by boss in a retracted position, where as monopropellant is broken down by catalyst to produce a gas, pressure will increase within chamber causing air in air chamber to compress thus to pull boss into the retracted position to cover catalyst thus to regulate the pressure within chamber.    USE - The self-regulating pressure source is useful: in fluidic elastomer actuator, robotic systems, energy generation devices (claimed), artificial muscles, assistive or rehabilitative devices, haptic or tactile displays and interfaces, pressure operated machinery, soft pneumatic/hydraulic robots and devices, injection systems, medical devices, hydrogen fuel cells and micro turbines to generate electricity for portable electronics; and for oxygen generation, personal portable heaters comprising hand warmers, small heat engines, electricity generation and flotation in lighter-than-air flyers.    ADVANTAGE - The self-regulating pressure source: is portable and provides silent pressure generation; is cheap and exhibits fast fabrication; has inherent safety, which makes them useful in human interactions; provides green/clean technology; does not discharge any harmful emissions or by products; and exhibits energy density, which comparable to the energy density of lithium batteries; and can be used for oxygen generation, which will eliminate the need for high pressure tanks and offers high oxygen density, thus can be used by astronauts, scuba divers, and search and rescue personnel.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) fluidic elastomer actuator comprising an elastomeric structure including fluidic channels embedded in it and the pressure source for pressurizing the fluidic channels; and    (2) self-regulating pressure source (II) comprising a chamber enclosing a chemical monopropellant, a piston slidingly disposed within the chamber and restrained by a spring, the piston including a catalyst portion, where as the monopropellant is broken down by the catalyst to produce a gas, pressure will increase within the chamber thus moving the piston into a position covering the catalyst, thus to regulate the pressure within the chamber.    DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of the self-regulating pressure source in which the air chamber is open to the air.    Air chamber (16)    Membrane (18)    Catalyst (20)    Boss (22)    Filter (26)