A smaller version of HERO was released later, called HERO Jr. Heathkit intended it for the home market, and therefore made it less complex, and more self-contained. Like HERO 1, HERO Jr. had a 6808 processor, but only 2 kB of RAM. As well, it sported onboard speech synthesis, a Polaroid sonar range sensor, a light sensor, and a sound sensor. An optional infrared sensor was available as well. Other optional components included a pair of extra batteries to double the operational time between charges, from an estimated 4 hours to 8 hours. A remote control accessory allowed users to drive the robot around. It included a motion sensor that caused the robot to croak “SOM-THING-MOVE” when it detected a source of motion.
Heathkit released several add-ons to increase the robot’s capabilities, including a transmitter to activate a home security system in the event it sensed movement while on “guard duty”. Also, additional cartridges with programs and games were available, as well as a components to allow the user to directly program the robot.
The drive mechanism is backward compared to the HERO 1, with the drive and steering wheel in the back of the robot. The head section featured an indentation to allow the robot to transport up to 10 lb (5 kg). The robot could speak several phrases from various films that either involved robots or computers. It was also capable of remembering and repeating back its masters name, as well as singing songs, reciting poems, and making its own combinations of phonemes to create a robotic gibberish.