A resilient, untethered soft robot has been developed by researchers at Harvard University. The robot is made of a composite material consisting of silicone elastomer, polyaramid fabric, and hollow glass microspheres. This allows the robot to be sufficiently large to carry the miniature air compressors, battery, valves, and controller needed for autonomous operation. The robot is designed to operate in two modes: using a battery pack for several hours, and using a very lightweight electrical tether for much longer periods. The robot is safe to handle and is resilient to a variety of adverse environmental conditions, including snow, puddles of water, direct exposure to flames, and the crushing force of being run over by an automobile. The robot is pneumatically powered and uses a modified Pneu-Net architecture to allow for rapid and stable actuation. The design of the robot was based on that of a previous, tethered quadrupedal soft robot. The researchers modified four characteristics of the tethered robot to develop an untethered one that is resilient to a variety of environmental conditions. These modifications include designing a higher strength and lower density composite elastomeric material for the body, designing a larger body size to accommodate and support the power source, employing a modified Pneu-Net architecture, and incorporating an electrically powered onboard air compressor, a system of valves, and a controller for pneumatic actuation. The robot can be driven for two hours on a flat surface using a battery pack at speeds of over 18.0 m/hr in a walking gait and over 2.0 m/hr in an undulating gait. The robot has been tested in a variety of harsh environmental conditions, including a snowstorm, puddles of water, and direct exposure to flames. The robot was able to withstand these conditions and continue operating without damage. The robot has also been tested in a range of harsh environmental conditions, including a snowstorm, water, and fire. The robot was able to operate in these conditions without damage. The robot is capable of carrying a payload of up to 8 kg, which is 160% of the total mass of the robot. The robot has been demonstrated to perform a variety of tasks, including remote audio and video sensing, and has been shown to be able to operate in a range of harsh environmental conditions. The robot is a promising candidate for use in search and rescue missions and other demanding tasks in challenging environments.A resilient, untethered soft robot has been developed by researchers at Harvard University. The robot is made of a composite material consisting of silicone elastomer, polyaramid fabric, and hollow glass microspheres. This allows the robot to be sufficiently large to carry the miniature air compressors, battery, valves, and controller needed for autonomous operation. The robot is designed to operate in two modes: using a battery pack for several hours, and using a very lightweight electrical tether for much longer periods. The robot is safe to handle and is resilient to a variety of adverse environmental conditions, including snow, puddles of water, direct exposure to flames, and the crushing force of being run over by an automobile. The robot is pneumatically powered and uses a modified Pneu-Net architecture to allow for rapid and stable actuation. The design of the robot was based on that of a previous, tethered quadrupedal soft robot. The researchers modified four characteristics of the tethered robot to develop an untethered one that is resilient to a variety of environmental conditions. These modifications include designing a higher strength and lower density composite elastomeric material for the body, designing a larger body size to accommodate and support the power source, employing a modified Pneu-Net architecture, and incorporating an electrically powered onboard air compressor, a system of valves, and a controller for pneumatic actuation. The robot can be driven for two hours on a flat surface using a battery pack at speeds of over 18.0 m/hr in a walking gait and over 2.0 m/hr in an undulating gait. The robot has been tested in a variety of harsh environmental conditions, including a snowstorm, puddles of water, and direct exposure to flames. The robot was able to withstand these conditions and continue operating without damage. The robot has also been tested in a range of harsh environmental conditions, including a snowstorm, water, and fire. The robot was able to operate in these conditions without damage. The robot is capable of carrying a payload of up to 8 kg, which is 160% of the total mass of the robot. The robot has been demonstrated to perform a variety of tasks, including remote audio and video sensing, and has been shown to be able to operate in a range of harsh environmental conditions. The robot is a promising candidate for use in search and rescue missions and other demanding tasks in challenging environments.