Thanks, but I've got the underside done correctly. It's the remaining silver tracks on the component side that are stumping me, though you clearly have better eyesight than me on some of these links. I just could not see the link between the transistors.
WHOOPS ! (oh not not him again)
Re: WHOOPS ! (oh not not him again)
Re: WHOOPS ! (oh not not him again)
Let's see if this helps
Green is component side and orange is the solder side.
Notice that there are a couple of links missing because of the sockets.
Green is component side and orange is the solder side.
Notice that there are a couple of links missing because of the sockets.
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- JCB_Speech_Synthesis_Module_Composite_View2.jpg (679.58 KiB) Viewed 45713 times
Re: WHOOPS ! (oh not not him again)
Thanks - that may help a lot. I'll take a look tomorrow.
Re: WHOOPS ! (oh not not him again)
Oooooh, looking good!
Tell me if you need the file with all the layers.
Tell me if you need the file with all the layers.
Re: WHOOPS ! (oh not not him again)
Right - I think I've done it finally.
Last edited by dublevay on Sat Jul 08, 2023 9:29 pm, edited 1 time in total.
Re: WHOOPS ! (oh not not him again)
I may replace the 2732 layout with a 2764-27512 one, to make sourcing EPROMs easier.
Re: WHOOPS ! (oh not not him again)
That is one nice looking board!
I think using 2764-27512 is a good idea, and I'd like to expand on that by asking if it would be possible to include the 28/29F010/20 as they have basically the same pins as the 27512 save for the Vcc and the 4 extra pins.
I think they would be even easier to find (I have several from old PC motherboards) and we get one more option to source chips.
I think using 2764-27512 is a good idea, and I'd like to expand on that by asking if it would be possible to include the 28/29F010/20 as they have basically the same pins as the 27512 save for the Vcc and the 4 extra pins.
I think they would be even easier to find (I have several from old PC motherboards) and we get one more option to source chips.
Re: WHOOPS ! (oh not not him again)
I'll give it some thought - depends what I can squeeze in. I'm not going to make these boards - but will offer the files/gerbers on my Github. This whole exercise is because I want to use this as a sample project for a CPLD experimenter board that I am making (SuperBob).robcfg wrote: ↑Sun Jul 09, 2023 12:08 am That is one nice looking board!
I think using 2764-27512 is a good idea, and I'd like to expand on that by asking if it would be possible to include the 28/29F010/20 as they have basically the same pins as the 27512 save for the Vcc and the 4 extra pins.
I think they would be even easier to find (I have several from old PC motherboards) and we get one more option to source chips.
Re: WHOOPS ! (oh not not him again)
Nice!
I'll probably order some boards done so I can make one for myself.
Thanks a lot!
I'll probably order some boards done so I can make one for myself.
Thanks a lot!