> I made a very big mistake on the choice of the footprint in Kicad for
> relays.
This sort of thing is a good argument for homemade circuit boards.? I
used to do it with pcb-express.? I downloaded their software but did not
order their boards.? I would print out the copper layers mirror image on
a laser printer.
Then iron the paper onto my copperclad board with a clothes
iron.? The paper would be stuck to the board.? Then dunk it all in water
and peel the paper off, hopefully leaving the
toner on the board.
? Then dunk the board in ferric chloride etchant.? When it's etched,
pull it out and scrub off the laser toner.? I use a Dremel mounted on a
drill press fixture and little tiny drill bits ( used to be available in
boxes really cheap at Harbor Freight, but no apparently longer alas ) to
drill the through holes.
? ? The devil is in the details with this thing - lots of experimentation
with different papers.? But I have successfully done 25-grid parts with
it.
? The boards don't turn out nearly as nice as something from a board
house, but you can design a board in the morning and have it in your
hands the same afternoon.
? ? ? ? ? ? ? ? ? ? ? - Jerry KF6VB
On 2021-04-26 10:18, Gerard wrote:
> Hello,
>
> I made a very big mistake on the choice of the footprint in Kicad for
> relays. Therefore, it cannot necessarily work. So I desoldered the
> relays and so I¡¯m going to make an adapter to fix it. This is the
> cleanest solution than cutting the tracks on the PCB
> The relay will be offset by 2.54 mm and the connection of the shot
> will be corrected.
> Only drawback we will see the support on 2.54mm, but it is the best
> solution.
>
> I read that we can add a protective diode on K1, can you tell me where
> exactly
>
> cdt
>
>
>
> Links:
> ------
> [1]
/g/BITX20/message/87917> [2]
/mt/79553656/243852> [3]
/g/BITX20/post> [4]
/g/BITX20/editsub/243852> [5]
/g/BITX20/leave/10189903/243852/952924773/xyzzy