Analog robot
An analog robot is a type of robot which uses analog circuitry to go toward a simple goal such as finding more light or responding to sound. The first real analog robot was invented in the 1940s by William Grey Walter. The name of these robots were ELSIE and ELMER (Electro Mechanical Robot). The original circuitry was developed using two vacuum tubes and a photocell to search and follow a light. Recently a kind of analog robots was developed by Mark Tilden.
Insbot
The scientists from LEURRE developed the first Insbot in 2002 and it has been undergoing development since. It runs on wheels and contains many computer processors, which are connected to cameras and proximity sensors, to help it avoid bumping into obstacles or other cockroaches. In the early stages of production, the group of scientists from LEURRE used a prior model, Alice robot, to conduct acceptance tests to determine how compatible the robot is within the society of cockroaches. The main challenges they faced were the robot's small size, the high level of integration (many sensors), and the darkness of the cockroach cuticle (Infrared (IR) sensors sensitivity). With the help of these tests, the scientists built a newer model which contained IR emitters with increased power, wireless communication modules for monitoring, additional sensors, more computational power, and a greater memory.