Hi. i need detect black walls. I did find that IR sensor not work in matte black surfaces then i am thinking to use ultrasonic sensor but here in Venezuela not selling these. (that bad)
I want to know if you know others method or know some ultrasonic sensor diagram circuit??
Please not recommend me touch sensor because the robot must be 30cm width maximum and the separation betwen walls will be 50 cm.
Thanks and congratulations for this wonderfull websites.
IS THE BEST
Jhon