Changes
/* Photoresist PCB Etching */
===Parts===
*Uv light (UV LED strip or DIY UV LED fixture?)*Pre-coated photoresist positive pcb*Lye (NaOH)*Ammonium persulfate(or Ferric Chloride, available at Fixme hackerspace)
===PCB Layout===
Remove the plastic protection on the PCB. Place the printed side of the layout against the copper side of the PCB. Remove the air bubbles captured under the greased paper
Place the PCB & Layout inside the exposure box. Then let the UV light do the work for 3-4 2 minutes 30 seconds ''This is a '''completely arbitrary''' timing, we should test different values''
Remove the PCB & Layout from the exposure box
===Etching===
The etching solution is a 200g/L ammonium persulfate mix(or Ferric Chloride).
The etching process can take to over an hour. To speed up this shit, you can add heat and/or bubbles to the solution.
