Can I use this motor For Building a Fast PID Line follower robot?
How heavy is the robot?
Quantify "fast".
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Wheel diameter is your key datum to speed.
Speed = RPM x 1m/60s x diameter x Pi
Examples: 11cm diameter at 1000 RPM and 4cm diameter at 3000 RPM
1000 rpm x 1/60 x 11 cm x 3.14 = 575 cm/s = 5.75 m/s =~ 21 km/hour
3000 rpm x 1/60 x 4 cm x 3.14 = 6.3 m/s ~= 23 kph
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about 0.5KG
should i consider about torque?
Required torque is, at root, the main specification that you must know to choose a motor. The torque can be calculated using robot mass, wheel diameter and a few other parameters. A search for "how to calculate robot locomotive motor torque" bring up lots of information.
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