Comments on: DIY Printed Circuit Board Using Photo Etching Method

By: Adding auto turn-off to a cheap multimeter | YourITronics

Adding auto turn-off to a cheap multimeter | YourITronics — Wed, 27 Jul 2011 10:00:29 +0000

[...] so when there is no signal coming from the mcu the transistor is off. The pcb was made using the photo etching technique and it was assembled with some solder paste and hot air gun. I also soldered some wires to connect [...]

By: Florin

Florin — Sun, 02 Jan 2011 15:49:24 +0000

FeCl3 is the one you need, and I can’t really tell you how much to mix with watter, it depends on its concentration level. It should have notes on the package. Or you can try by mixing until the liquid becomes dark coloured like in one of my pictures above.

By: Arup Basak

Arup Basak — Sun, 02 Jan 2011 08:26:26 +0000

I have solid powder dry Fecl3, or maybe Fecl2 , it’s colour is black-brown. To make the etch solution, how many grams of that powder has to be mixed in 100ml soft water?
Hope reply asap.

By: TPS54232 constant current source | YourITronics

TPS54232 constant current source | YourITronics — Fri, 29 Oct 2010 10:36:36 +0000

[...] above. After I had all of my circuit figured out, I routed the board and etched it using my photo etching technique. For such a small board its not worth taking out the solder paste so I soldered it using the [...]

By: antonio

antonio — Sun, 17 Oct 2010 23:26:35 +0000

hi Florin, yes agree for use UV leds.

Is very innovation.
I will use.
best regards
antonio from italy

By: Florin

Florin — Sun, 17 Oct 2010 08:30:32 +0000

Hi Antonio, here is the picture. http://twitpic.com/2ydvui

I’m seeing more and more people using UV leds these days, so you should inspect that option too. It’s definitely going to be smaller and less dangerous to handle.

By: antonio

antonio — Sun, 17 Oct 2010 01:29:36 +0000

hi florin, can you send me a photo of mercury light bulb tha you have used?

thanks antonio from italy

By: LM317 constant current source | YourITronics

LM317 constant current source | YourITronics — Sat, 02 Oct 2010 09:54:11 +0000

[...] proceeded and used my DIY photo etching method but something went wrong and I messed up all of the PCB’s, they ended up looking like [...]

By: CS

CS — Mon, 30 Aug 2010 13:32:38 +0000

a place to learn draw a pcb?
here’s…
http://www.youtube.com/watch?v=9_BzrDuDYgU
Contact me if u need my help.
email:cscheah@affinex.com.my

By: Rusty

Rusty — Fri, 06 Aug 2010 15:35:54 +0000

Great information, but nobody has mentioned a good tinning solution. Does anyone have a supplier?