a Schematics of autonomous camouflage system with heater feedback control logic circuit. b The ATACS with color sensor and its schematics of working principle. c Demonstration of S-ATACS that changes its color using real-time background color data. d The temperature of the ATACS and RGB intensity of real-time color sensing data from the background. Insets are the digital image of S-ATACS color changes with respect to RGB intensity. e Instantaneous crypsis of the chameleon robot. The robot crawls on the background and changes its skin color according to the background color. The scale bar is 3 cm.