So uh this is the circuit board. The green one is a circuit board. Actually , uh building a circuit bo board is pretty pretty uh easy and also it's a it's a l l inexpensive. Uh it's it costs less than what you print on a paper , because uh  uh when you  when you are building uh some circuits  some um uh circuits and also wires , it's it's better to go for printing , because uh you can build these kind of k circuit boards on a on a bulk and it's just printing , nothing like uh , you know , you don't need to use wires and all.
Mm-hmm.
It's not exactly wires we are using. It's just printing something on a board.
Tha tho those prints will acti act as wires and ci uh circuits. So th that green uh thing is a circuit board , and also you can see uh there are b s like uh um access for buttons , like when you press a button , the circuit under the button will be activated uh th it will it will he get some signals from it and it will uh it will ch its ch se send a signal  signals to the , yeah , um integrated circuit.