Ceiling Fan LED Display

Step 2 Creating the circuit boards

The boards were designed using ExpressPCB. I choose to buy some single sided copper clad and etch them myself. There are plenty of how-to's for making boards but, I found the toner transfer method worked well for me. After a little experimenting with the clothes iron, overhead projector sheets printed in an old fax machine worked best. A black permanent marker or finger nail polish are good for touch ups of gaps where the toner does not adhere well to the copper. Also, the boards cut easily with a table saw since I don't have access to a shear. Muriatic acid and hydrogen peroxide was the mixture of choice to etch the boards. If you don't want to deal with the acid, you could always order the boards right through the ExpressPCB program.

Comments

[Mulato]

woo ooo wooo! thanks! =) already big project helper =D

[Mulato]

mmm its all perfekt, I need the diagram bekause this POV will be my projekt in my High Skhool this 11/Oktober, kan you give me the diagram? I Will be very thankful

[UncleBone]

I added the ExpressPCB file to this step.

[mrwolfe]

Also, see this: http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/

[mrwolfe]

Ammonium persulfate, sodium persulfate, cupric cloride or ferric chloride are the usual choices for etching copper pcb's with, although ferric chloride is pretty messy. Ammonium persulfate is fairly clean, although it doesn't work well when it's cool - needs to be at around 70C to be effective