A heat-sensitive circuit could take readings once a minute and trigger a camera or other power-hungry sensors on the mote to start recording whenever the burrow warms rapidly.

• 我们可以让热感应电路每隔一分钟读取一次读数，只要洞穴内快速变暖，就启动尘粒内的照相机或其他较为耗电的感测器，开始进行记录。