Low Cost. Obstacle avoidance, mobile robot platform.

Demo video . https://youtube.com/shorts/SzBT1n1dths?si=oDUbkOKtkrJ2itYE
Build video. https://youtu.be/-gejd2CDZZg?si=1QQr6IBRhtpld4WR
This obstacle avoidance mobile platform uses the low-cost IR sensor module and Low-cost dual H-bridge motor driver.
BOM
One nail
Two B B's.
One battery holder for 2 AA cells
One slide switch with 19mm mount holes.
One TT gearmotor 1:48 dual shaft.
Two O rings for wheels.
One Dual H-bridge motor driver. L298n.
One IR sensor module.
Two 6-32 screws 1/4 inch long.
Four 2mm screws by 4mm long.
Two 2mm screws by 10mm long.
One 10K resistor.
One 2n3906 PNP transistor.
One 10 uf Cap.