A500 trapdoor memory: free design - Page 21

SukkoPera · 13 September 2018, 21:37

Actually I have reported two more working chips...

patzik · 17 September 2018, 15:47

I just found this project, and would like to order some boards.
Looked at the gerber and see they are joined in a way unknow to me.
How do you seperate the 2 boards? Why not use breakout tabs?

Chain · 17 September 2018, 16:02

demolition · 17 September 2018, 16:38

patzik · 17 September 2018, 17:44

Is it possible to get the gerbers for the boards seperate? So I can panelize them with other boards? And join them with breakout tabs.

katarakt · 17 September 2018, 18:25

I've used this:

Take care that you are using a circular saw blade (is this called so?) which is not too thick!! Measure! Use one with many teeth !

maeltar · 18 September 2018, 11:20

Got 10 of the PCB's made by jlcpcb, $2 plus postage, came to about $20

Split the Gary side away with a hacksaw and cleaned the edge with a file..

Got the memory on and 2 100uF caps, plugged in and working.. Happy Days..

patzik · 19 September 2018, 16:13

Here's the way I solved this...

katarakt · 19 September 2018, 18:28

This is geat patzik! If you remove the jumper traces so it all can be jumpered this would be your next step to make it better

patzik · 19 September 2018, 22:59

Jumper version on request...

I deleted the jumper connections, also the clock jumper, and the solder jumper on the backside. I this the way you want it?

katarakt · 20 September 2018, 21:12

Excellent, i've some more improvements. Goal is the perfect version which can be pinned to page one in this topic. I'll send you pm.

Clamshell · 21 September 2018, 16:53

Hey katarakt, sounds interesting. Go forward

majinga · 21 September 2018, 18:18

JP4 on the GA still have the jumper trace.

To be honest, there is no need to remove the traces on RASU1, RASU3 and RASU4.
But have a trace where is supposed to be a jumper can be a little confusing.

Anyway, great job, everyone!

katarakt · 21 September 2018, 19:44

Oh, yes, JP4 trace has to be removed !!

I've sent him my ideas to make this perfect, have posted these some months ago here in this thread but sadly no one want to do this. Just simple things for the eagle guys. Maybe patzik does the final version

Mainly, it's for the community here. At the moment i have enough ramexpansions but maybe i'll do another collective order with "the final" one if someone makes the gerber

Chain · 24 September 2018, 01:03

Finally my proof of concept, from uploading free gerbers to make something usable, under 5 bucks

P.S. Extensivelly tested with Hired guns and Settlers up to 7hrs

patzik · 25 September 2018, 00:01

I'll have a look at it when I have some time, not sure if I understand all you wanted in the PM, so I'll get back to you on that...

Can't find JP4, where is that? (edit, never mind.... found it)

What do you guys think about replacing the jumpers with solder pads? This way you can configure it with a 'blob' of solder, and change it if necessary (which I don't think will be needed often, if at all...)

Also I don't want to change the design completely, how, do the original designers of this project look at these changes?

katarakt · 25 September 2018, 19:38

Nooo, never ever solder pads! Stick with jumper, this will be fine. The orignal designers are happy with every changes who makes it better, so go for it

Chain · 25 September 2018, 22:54

Im with him, please finish dat gerbers for maximal variability if possible, no cuts etc

katarakt · 26 September 2018, 21:16

Can someone please confirm:

If LED is soldered and ramexpansion is jumpered/switched to disabled the LED is off and on if ramexpansion is jumpered/switched enabled ? I haven't tested this yet and can test this earliest at the weekend.

Patzig is going to finish the final optimized version

Thanks a lot in advance

SukkoPera · 26 September 2018, 22:26

No, I think the led will always be on when the expansion is plugged in, regardless of whether it's enabled or not.

21 September 2018, 19:44	#414
katarakt Registered User Join Date: Jul 2017 Location: Germany Posts: 205	Oh, yes, JP4 trace has to be removed !! I've sent him my ideas to make this perfect, have posted these some months ago here in this thread but sadly no one want to do this. Just simple things for the eagle guys. Maybe patzik does the final version Mainly, it's for the community here. At the moment i have enough ramexpansions but maybe i'll do another collective order with "the final" one if someone makes the gerber Last edited by katarakt; 21 September 2018 at 19:50.

25 September 2018, 00:01	#416
patzik Registered User Join Date: Sep 2017 Location: Haarlem/Netherlands Posts: 24	I'll have a look at it when I have some time, not sure if I understand all you wanted in the PM, so I'll get back to you on that... Can't find JP4, where is that? (edit, never mind.... found it) What do you guys think about replacing the jumpers with solder pads? This way you can configure it with a 'blob' of solder, and change it if necessary (which I don't think will be needed often, if at all...) Also I don't want to change the design completely, how, do the original designers of this project look at these changes? Last edited by patzik; 25 September 2018 at 00:15.

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13 September 2018, 21:37	#401
SukkoPera Mighty Pirate Join Date: Dec 2017 Location: On the borderline Age: 44 Posts: 177	Actually I have reported two more working chips...

17 September 2018, 15:47	#402
patzik Registered User Join Date: Sep 2017 Location: Haarlem/Netherlands Posts: 24	I just found this project, and would like to order some boards. Looked at the gerber and see they are joined in a way unknow to me. How do you seperate the 2 boards? Why not use breakout tabs?

17 September 2018, 16:02	#403
Chain A-Collector, repairments Join Date: Jul 2001 Location: Czech Rep. Age: 50 Posts: 1,536

17 September 2018, 16:38	#404
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190

17 September 2018, 17:44	#405
patzik Registered User Join Date: Sep 2017 Location: Haarlem/Netherlands Posts: 24	Is it possible to get the gerbers for the boards seperate? So I can panelize them with other boards? And join them with breakout tabs.

17 September 2018, 18:25	#406
katarakt Registered User Join Date: Jul 2017 Location: Germany Posts: 205	I've used this: Take care that you are using a circular saw blade (is this called so?) which is not too thick!! Measure! Use one with many teeth !

18 September 2018, 11:20	#407
maeltar Registered User Join Date: Sep 2018 Location: Wellesbourne Posts: 3	Got 10 of the PCB's made by jlcpcb, $2 plus postage, came to about $20 Split the Gary side away with a hacksaw and cleaned the edge with a file.. Got the memory on and 2 100uF caps, plugged in and working.. Happy Days..

19 September 2018, 18:28	#409
katarakt Registered User Join Date: Jul 2017 Location: Germany Posts: 205	This is geat patzik! If you remove the jumper traces so it all can be jumpered this would be your next step to make it better

20 September 2018, 21:12	#411
katarakt Registered User Join Date: Jul 2017 Location: Germany Posts: 205	Excellent, i've some more improvements. Goal is the perfect version which can be pinned to page one in this topic. I'll send you pm.

21 September 2018, 16:53	#412
Clamshell Registered User Join Date: Nov 2017 Location: CGN Posts: 16	Hey katarakt, sounds interesting. Go forward

21 September 2018, 18:18	#413
majinga Registered User Join Date: Aug 2018 Location: Italy Posts: 52	JP4 on the GA still have the jumper trace. To be honest, there is no need to remove the traces on RASU1, RASU3 and RASU4. But have a trace where is supposed to be a jumper can be a little confusing. Anyway, great job, everyone!

24 September 2018, 01:03	#415
Chain A-Collector, repairments Join Date: Jul 2001 Location: Czech Rep. Age: 50 Posts: 1,536	Finally my proof of concept, from uploading free gerbers to make something usable, under 5 bucks P.S. Extensivelly tested with Hired guns and Settlers up to 7hrs

25 September 2018, 19:38	#417
katarakt Registered User Join Date: Jul 2017 Location: Germany Posts: 205	Nooo, never ever solder pads! Stick with jumper, this will be fine. The orignal designers are happy with every changes who makes it better, so go for it

25 September 2018, 22:54	#418
Chain A-Collector, repairments Join Date: Jul 2001 Location: Czech Rep. Age: 50 Posts: 1,536	Im with him, please finish dat gerbers for maximal variability if possible, no cuts etc

26 September 2018, 21:16	#419
katarakt Registered User Join Date: Jul 2017 Location: Germany Posts: 205	Can someone please confirm: If LED is soldered and ramexpansion is jumpered/switched to disabled the LED is off and on if ramexpansion is jumpered/switched enabled ? I haven't tested this yet and can test this earliest at the weekend. Patzig is going to finish the final optimized version Thanks a lot in advance

26 September 2018, 22:26	#420
SukkoPera Mighty Pirate Join Date: Dec 2017 Location: On the borderline Age: 44 Posts: 177	No, I think the led will always be on when the expansion is plugged in, regardless of whether it's enabled or not.

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