RILYBOT 4: How Do I Make One?
You will need the Robotics Invention System set, a LEGO® product available through many large toy stores, and even a few computer and appliance stores that sell computer games and/or videogame systems.
The RILYBOT 4 design also includes the following additional parts:
- three 2×8 conducting plates
- one 2×4 conducting plate
- two 1×2 conducting plates
- one polarity switch
- four 47K 1/4-watt resistors
- two 4.7K 1/4-watt resistors
- several short pieces of 24-gauge insulated wire
The conducting plates are all included in spare parts set #5037 "electric plates". The polarity switch comes in spart parts set #5120 "polarity switch". Two of the 2x8 conducting plates, the resistors and the wire are used to make the multi-input adapter plates. The third 2×8 conducting plate is cut into four 2×2 pieces and used to connect the multi-input adapters to the RCX terminals.
Once you have the robotics kit and have made the adapter plates, you need to build a robot. The specifics of building the robot are not important as long as it meets the following requirements:
- two motors, connected to A and C
- adapter plates connecting motor output A to sensor input 1 and motor C to sensor 3.
- two touch sensors, connected to the adapter plates
- one light sensor, connected to 2
- when the robot is turned off you can roll it around and said rolling will cause the motors to turn without a lot of slipping
- when the robot is on and the motors are running, the motors will cause the robot to move around without a lot of slipping
The combination of those last two requirements means that you can't use a lot of gear reduction between the motor and the wheels, and they also pretty much rule out the use of tank treads or legs.
Once you've built your robot, any of the RILYBOT 4 programs should control the robot as described here.
This page was written in the "embarrassingly readable" markup language RHTF, and was last updated on 2014 Dec 11.
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