First we drew the circuit on the paper, and Ayo helped us to check if it is right or not.
And then, we try to drew the circuit on the board.
After that, we put the board into acid solution and waited for about 20 minutes!
I picked my board out, and put it into water. After that, I clean it by the cotton-padded with alcohol.
That’s what it looks like in the end of the class.