Arduino: build a line-following robot
A 2WD robot that follows a black electrical-tape line using three IR reflectance sensors. Bang-bang control done honestly, PID optional.
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#robot
5 tutorials
Arduino: build a light-following robot with LDRs
A 2WD robot that chases a flashlight beam using two LDR eyes and bang-bang steering. Phototaxis for twelve dollars of parts.
Arduino: build an obstacle-avoiding robot from scratch
A 2WD Arduino robot that drives forward and dodges what is in front of it, using an HC-SR04 on a servo and an L298N driver. The full build, wiring to behavior.
Arduino: line-follower with the TCRT5000 array and PID
The PID line-follower: three TCRT5000 analog sensors feed one weighted error signal, and the robot steers in proportion to how far off the line it is.
ESP32: build a 2WD robot base with motor control
Two DC motors, an L298N motor driver, an ESP32, and ultrasonic distance sensors. The base you build a robot on top of.