This is a quick overview of how I use dry film UV etch resist to make decent quality pcb's at home - Not professional quality but more than good enough for rapid prototyping.
In this video I prepare the negative, apply dry film to the PCB, expose, and etch the PCB. This does require some equipment and chemicals, but it's within the reach of most electronics enthusiasts.
The UV exposure unit is UV led strips with a timer (you could use a fluorescent lamp for the same thing), I get my ferric chloride and dry film etch resist from an electronics supplier, all the rest is just stuff I had at hand.
Not shown is the fact that after cleaning the exposed dry film in sodium carbonate I wash the PCB in cold water and then leave it to dry overnight, the next day I then expose it to UV again for several minutes to further harden it.
Any questions, ask away.
In this video I prepare the negative, apply dry film to the PCB, expose, and etch the PCB. This does require some equipment and chemicals, but it's within the reach of most electronics enthusiasts.
The UV exposure unit is UV led strips with a timer (you could use a fluorescent lamp for the same thing), I get my ferric chloride and dry film etch resist from an electronics supplier, all the rest is just stuff I had at hand.
Not shown is the fact that after cleaning the exposed dry film in sodium carbonate I wash the PCB in cold water and then leave it to dry overnight, the next day I then expose it to UV again for several minutes to further harden it.
Any questions, ask away.
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