Comments on: DIY Printed Circuit Board Using Photo Etching Method

By: Florin

Florin — Sat, 12 Dec 2009 15:38:23 +0000

Hi,
I don’t have the most green method of disposing these chemicals, but I always make sure to dilute the solution with lots of water before before sending it down the pipes. I suppose a professional way of disposing these chemicals is with special filters that will capture any part dangerous for the environment, but not really accessible for hobby use.

By: ipkwena

ipkwena — Sat, 12 Dec 2009 05:55:03 +0000

This is an outstanding guide on developing PCBs. Do you have any comment on method on best method to dispose of these chemical solutions such as the developer and the ferric chloride? I have never developed any PCB myself as yet and I have not bought any of these chemicals.

I am keen to start soon and test it out.

By: Florin

Florin — Tue, 18 Aug 2009 13:27:57 +0000

nope, you can’t go back once you’ve cleaned it with acetone because it will etch all of your copper if there’s nothing left to protect it.

By: Chopin

Chopin — Tue, 18 Aug 2009 07:56:05 +0000

hi there..what if the way i used the ferric chloride is wrong such that the copper is still on the board, and i’ve already went on to the acetone step…could i still repeat the ferric chloride step using the same board that i used?

By: DIY UV LED Exposure Box | YourITronics

DIY UV LED Exposure Box | YourITronics — Mon, 13 Jul 2009 19:45:00 +0000

[...] great project for home use, the UV LED Exposure Box can come in handy when making PCBs. Details on the components, assembly, soldering as well as schematics and other useful information [...]

By: PIC16F876 development board | YourITronics

PIC16F876 development board | YourITronics — Sat, 23 May 2009 13:09:59 +0000

[...] normally I would not build anything on pic. I just wanted to show once again, that using the photo etching technique and some effective component placing you can obtain really nice results wether your [...]

By: Florin

Florin — Fri, 27 Feb 2009 10:40:26 +0000

Marian, the ballast is linked in series with the light bulb. The ballast is very old, I got it from a friend..

By: Marian

Marian — Thu, 26 Feb 2009 17:45:18 +0000

I’m also from Romania and I’m wondering where did you get the ballasts from? And if you can post some sort of a schematic of your exposure unit.Thanks in advance

By: Florin

Florin — Sat, 24 Jan 2009 13:39:42 +0000

I’m happy it worked for you too, and, yes CNC drilling is much better than hand drilling

By: comfy

comfy — Sat, 24 Jan 2009 12:38:05 +0000

Thanks for this! Just made my first homemade PCB based on this method. No special bits (homemade UV box, cheap printer (canon mp240), cheap transparencies) absolutly shocked at the results. Very fine detail. I used to work for a PCB manufacturing company (programming CNC drill machines) and the results are easily as good as them (single sided that it). Just wish I still worked there because now I got to drill the darn thing.