9709 Mindstorms RCX Programmable LEGO Brick
Average price: $12.75
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Description
The RCX is a programmable microcontroller designed as the central processing unit for robotics projects. It executes programs created on a PC, enabling control of motors and data collection from various sensors. The unit features three analog/digital input ports for sensor connections and three variable output ports for motor control. Power is supplied by six AA batteries (1.5V each) or an optional 9V transformer (sold separately, reference 9833). It can store up to five distinct programs, each supporting up to 1,500 instructions. The hardware includes a Hitachi processor with 16K ROM, 512 bytes of SRAM, and an additional 32K SRAM. Additional features include a built-in speaker for audio feedback, a timer function, and wireless communication capabilities for linking multiple RCX units together.