After making 11 videos, one per week! I reached 250 subscribers.
I found some facebook and linkedin groups that are interested by robotics. I searched for groups about "AI", "Robotics", "IOT", "Machine Learning", "ROS" etc. And shared my first video in them.
It helped me grow the channel and bring people that I didn't know directly.
However after discussing with some people, it seems like the content is too technical, even tough I like to explain things. I'm wondering whether I should make the content less technical but more engaging and fun. I could concentrate on making progress on the robot and just showing the progress and creating fail compilations.