Homemade PCB

Making PCB at home using the toner transfer method is a well known art. Finally, when my project required a simple EEG amplifier circuit, I decided to give the technique a try myself. And surely it did work. However, I also learned certain quirks and potential limitations. Sharing some of these findings here. I will also be really happy to hear from the experiences of others who have done DIY PCBs.

My primary reference was a Youtube video due to Pareekshith P.

(TODO: add images)

* In my experience, 16mil (0.016 inch) of trach thickness might be Ok. However, I think its safe to use 24mil.

* When using the iron box, take special care to ensure that edges of the pattern are also properly transferred.

* The etching process is largely trouble free. If it seems very slow add enough Ferric Chloride. I think 15min is typical.