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[2019-09-10 21:54:21 CEST] <djp> hi
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[2019-09-15 20:01:32 CEST] <PCHEINZ> Hello Dave
[2019-09-15 20:02:24 CEST] <PCHEINZ> Back from filling station, paid 1.33€ per 1 litre.
[2019-09-15 20:05:02 CEST] * g2 joined
[2019-09-15 20:05:10 CEST] <rune> Hello
[2019-09-15 20:05:32 CEST] * g2 quit (CGI:IRC 0.5.12)
[2019-09-15 20:05:38 CEST] <rune> not a bad price, possible less than here
[2019-09-15 20:05:56 CEST] <PCHEINZ> higher prices are expected !
[2019-09-15 20:06:02 CEST] <rune> I have a problem with my soldering station
[2019-09-15 20:06:26 CEST] <PCHEINZ> Do you use unleaded tin?
[2019-09-15 20:06:39 CEST] <rune> turned it on tonight and casing and tip were glowing red hot
[2019-09-15 20:07:01 CEST] <rune> Looks like the thermostat or temperature control has gone
[2019-09-15 20:07:26 CEST] <rune> New soldering handles are cheap if you have a 5 hole plug.
[2019-09-15 20:07:32 CEST] <rune> Mine is 4 hole
[2019-09-15 20:07:32 CEST] <PCHEINZ> You should not repair it, or was it very expensive?
[2019-09-15 20:07:53 CEST] <rune> It was free, but cost around 300 dollars
[2019-09-15 20:08:10 CEST] <PCHEINZ> I use one for about 20€.
[2019-09-15 20:08:34 CEST] <rune> Yes, Im thinking of one of those from ebvay
[2019-09-15 20:08:52 CEST] <rune> So, my Uart PCB is not finished
[2019-09-15 20:09:16 CEST] <rune> I got the resistors in, but have a problem with the caps
[2019-09-15 20:09:34 CEST] <rune> the ones you sent are different from the list
[2019-09-15 20:09:36 CEST] <PCHEINZ> Mine is just thyristor controlled with a knob, but no display.
[2019-09-15 20:09:57 CEST] <PCHEINZ> Which cap?
[2019-09-15 20:10:11 CEST] <PCHEINZ> 1mF?
[2019-09-15 20:10:17 CEST] <PCHEINZ> 1microF
[2019-09-15 20:10:48 CEST] <rune> There were 4 different values but the numbers didnt seem to match the BOM
[2019-09-15 20:11:25 CEST] <rune> 475 25+, is that the 4.75uf ones
[2019-09-15 20:11:42 CEST] <PCHEINZ> I have sent you the following caps (if I remember right): 1x10 microFarad, 4x1microFarad
[2019-09-15 20:12:08 CEST] <rune> 106 and 2x104s
[2019-09-15 20:12:43 CEST] <rune> Its not a problem, I just stopped to think instead of jumping in head first
[2019-09-15 20:13:07 CEST] <PCHEINZ> 475 means 47 followed by 5 zeros. This is 4500000 pF = 4.5 micro Farad. mic 
[2019-09-15 20:13:43 CEST] <PCHEINZ> 106 is 10 micro Farad.
[2019-09-15 20:13:51 CEST] <rune> Ah, I couldnt see that on internet. but I was pre-occupied with my new heater 
[2019-09-15 20:15:12 CEST] <PCHEINZ> Did I forget the 4 items 105 ?
[2019-09-15 20:15:17 CEST] <rune> What are the 1 UF for. this is my list
[2019-09-15 20:15:26 CEST] <rune> C1 - 22pf	
[2019-09-15 20:15:26 CEST] <rune> C2 - 22pf
[2019-09-15 20:15:26 CEST] <rune> C3 - 4.7u/16	4.7 uf
[2019-09-15 20:15:26 CEST] <rune> C4 - 4.7u/16	4.7 uf
[2019-09-15 20:15:26 CEST] <rune> C5 - 10u/16     106 uf
[2019-09-15 20:15:26 CEST] <rune> C6 - 100n
[2019-09-15 20:15:28 CEST] <rune> C7 - 100n
[2019-09-15 20:15:31 CEST] <rune> C8 - 100n
[2019-09-15 20:15:34 CEST] <rune> C9 - 100n
[2019-09-15 20:15:36 CEST] <rune> C10 - 100n
[2019-09-15 20:15:38 CEST] <rune> C11 - 100n
[2019-09-15 20:15:40 CEST] <rune> C12 - 100n
[2019-09-15 20:15:42 CEST] <rune> C13 - 100n
[2019-09-15 20:15:47 CEST] <rune> There are 4 - I though 104s
[2019-09-15 20:15:54 CEST] <rune> Maybe 105s
[2019-09-15 20:16:24 CEST] <PCHEINZ> Small tantalium, 105?
[2019-09-15 20:16:38 CEST] <PCHEINZ> asymmetrically?
[2019-09-15 20:16:38 CEST] <rune> yes that there
[2019-09-15 20:17:03 CEST] <rune> long legs are positive?
[2019-09-15 20:17:08 CEST] <PCHEINZ> These should be used araond the MAX232 as it can be seen on my pictures.
[2019-09-15 20:17:37 CEST] <PCHEINZ> There is a printed plus on one side, this is plus.
[2019-09-15 20:18:00 CEST] <PCHEINZ> Don't know whether the legs are of different length.
[2019-09-15 20:18:53 CEST] <PCHEINZ> I could send yyou the picture again.t 
[2019-09-15 20:18:58 CEST] <rune> To be honest, I only see 100nf
[2019-09-15 20:19:08 CEST] <PCHEINZ> These caps are3 needed to generate the +-12V.
[2019-09-15 20:19:14 CEST] <rune> I have schematic open
[2019-09-15 20:20:31 CEST] <PCHEINZ> The picture was called RESET&Polarity.jpg
[2019-09-15 20:21:33 CEST] <rune> looking at it - these are 10nf?
[2019-09-15 20:21:49 CEST] <PCHEINZ> Olli has used in the scheme only 100nF caps, but in this case one has to use a special version of the MAX232.  
[2019-09-15 20:22:18 CEST] <rune> AH, OK, I'll change values on schema
[2019-09-15 20:22:39 CEST] <PCHEINZ> Did you found the picture?
[2019-09-15 20:22:53 CEST] <rune> yes
[2019-09-15 20:23:12 CEST] <PCHEINZ> OK. There are these four caps around the socket.
[2019-09-15 20:23:28 CEST] <PCHEINZ> And a blue one (100nF).
[2019-09-15 20:23:53 CEST] <rune> Yep, got it annotated.
[2019-09-15 20:24:39 CEST] <rune> OK, russian Jupiter Ace PCB? 
[2019-09-15 20:24:48 CEST] <PCHEINZ> On two of them you can see the label, but on the both at rthe right not.
[2019-09-15 20:24:55 CEST] <PCHEINZ> This is the right polarity.
[2019-09-15 20:25:43 CEST] <rune> The schema doesnt show polarity
[2019-09-15 20:25:56 CEST] <PCHEINZ> Remember the Russian. 
[2019-09-15 20:26:16 CEST] <PCHEINZ> But why the Russian, if you will devellope your own board?
[2019-09-15 20:26:36 CEST] <PCHEINZ> develope
[2019-09-15 20:26:48 CEST] <rune> The more tracks I put on, the more difficult it is.
[2019-09-15 20:27:05 CEST] <PCHEINZ> Is this your first project?
[2019-09-15 20:27:32 CEST] <rune> First big one. I have done keyboard PCBs and expansion cards
[2019-09-15 20:28:19 CEST] <PCHEINZ> I hope that you will finish it!
[2019-09-15 20:28:21 CEST] <rune> What have 
[2019-09-15 20:28:44 CEST] <rune> you put over the reset pin in the UART PCB? It looks... brown
[2019-09-15 20:28:49 CEST] <rune> rusty
[2019-09-15 20:29:32 CEST] <PCHEINZ> It is a brown insulating hose.
[2019-09-15 20:29:52 CEST] <rune> OK.
[2019-09-15 20:30:17 CEST] <PCHEINZ> What type of MAX232 do you use?
[2019-09-15 20:30:22 CEST] <rune> I got an ATX PSU breakout board. Now I have 12 -12 5 3.3 volts
[2019-09-15 20:30:43 CEST] <rune> The one you sent me. I dont know for sure
[2019-09-15 20:31:41 CEST] <PCHEINZ> If I have sent you one, then you should use the 1 micro Farad, 19´00nF is not enough.
[2019-09-15 20:31:47 CEST] <PCHEINZ> 100nF
[2019-09-15 20:32:10 CEST] <PCHEINZ> I think in the BOM is another type. 
[2019-09-15 20:32:13 CEST] <rune> Also, I see you have used a Zeddy edge connector. That works on Spectrum too?
[2019-09-15 20:33:09 CEST] <PCHEINZ> Yes, except the reset line AND all address line starting from A8 on. They are different.
[2019-09-15 20:33:45 CEST] <PCHEINZ> That is the reason why one can't use board with an EPROm on both computers.
[2019-09-15 20:33:52 CEST] <rune> How to you use your reset? I dont see any buttons
[2019-09-15 20:34:29 CEST] <PCHEINZ> No button, just automatical RESET as on the Zeddy board.
[2019-09-15 20:34:51 CEST] <rune> Pull the power plug?
[2019-09-15 20:35:46 CEST] <PCHEINZ> Yes. You can see the mimic on the RESET&Polarity.jpg picture.
[2019-09-15 20:35:58 CEST] <PCHEINZ> At the very left.
[2019-09-15 20:36:09 CEST] <rune> And how are you modifying the 9pin socket? Cutting tracks?
[2019-09-15 20:37:22 CEST] <PCHEINZ> Do you mean the RS232-male connector?
[2019-09-15 20:37:37 CEST] <rune> yes
[2019-09-15 20:37:59 CEST] <PCHEINZ> Three lines had to be cut.
[2019-09-15 20:38:30 CEST] <rune> thats not too bad. 
[2019-09-15 20:38:59 CEST] <PCHEINZ> Do you need a scheme of the RESET mimic?
[2019-09-15 20:39:47 CEST] <rune> Yes please It would be a good idea. 
[2019-09-15 20:40:15 CEST] <PCHEINZ> I will do it.
[2019-09-15 20:40:51 CEST] <PCHEINZ> I have to prepare something for a talk tomorrow at the seminar in Berlin.
[2019-09-15 20:41:03 CEST] <PCHEINZ> So we should stop now.
[2019-09-15 20:41:04 CEST] <rune>  Ok, finish now?
[2019-09-15 20:41:20 CEST] <rune> Talk to you next week when I get new iron
[2019-09-15 20:41:22 CEST] <rune> Bye
[2019-09-15 20:41:27 CEST] <PCHEINZ> Yes, next week I will be in Frankfurt, sitting the babies.
[2019-09-15 20:41:34 CEST] <PCHEINZ> Bye.
[2019-09-15 20:41:34 CEST] <rune> OK, have fun
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