Title of the activity: Etching the
circuit for the project
After the schematic diagram of the
circuit was designed by using Diptrace software, the etching of the PCB board
can be proceeded. The method that chosen to do the etching by using the iron.
After the track of the circuit was printed on transparent plastic, the track of
the circuit need to transfer to the PCB board. Hence, the plastic need to be
ironed together with the PCB board. Then, for four more minutes, slowly move
the iron around making sure to put a lot of pressure on the plastic, but not
allowing the plastic to slide on the board. When done, let the board fully cool
before moved it at all. This will allow the toner to adhere to the copper and
prevent you from being burned.
In a well-ventilated area with a fan, add 2-cups hydrogen peroxide to a plastic
container. Gently pour in 1-cup Muriatic acid, to create the etching solution.
Always wear goggles, gloves, and do not inhale the fumes. Do not use any metal
containers, measuring cups, stainless steel sinks, or tools with this mixture
as this mixture will aggressively etch metal. Acid safety, think “triple A”,
for Always Add the Acid, it’s whatever is in the container that will end up
splashing. This etching solution, while made with common chemicals, should
command respect. It is dangerous to yourself and surroundings, treat it with
respect. Ferric chloride is another common etching solution, it is not a safer
solution to use, both are equally dangerous.
Below is picture of the process for etching:
Redo the copper line by using permanent marker
Etching the circuit board
