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HD-Bot is my first intend in building robots. His name is is derived from his chassis, which is an an old hard disk case. There is no controller onboard, the motors are controlled by a comparator chip (LM393). The line sensors are build with 2 CNY70 infrared opto reflex couplers. In a future version, 2 LDRs for light detection and a collisision detector are planned. For this reason a 4x2 analogue multiplexer is also needed. Sensors 2 x CNY70 as line follow sensor 2 x LDRs for light detection ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/hd-bot