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Forum Index : Microcontroller and PC projects : Introducing the Colour Maximite 2

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matherp
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Joined: 11/12/2012
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Posted: 09:41am 11 May 2020

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https://jlcpcb.com/

Poppy

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Joined: 25/07/2019
Location: Germany
Posts: 486

Posted: 09:55am 11 May 2020

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Thanks, I will check it out, though being completely new to me this global pcb-ordering-issue.

Andre ... such a GURU?

matherp
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Posted: 09:58am 11 May 2020

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Just drag and drop the zip file containing the gerbers to their page and it all happens magically. It is a great service, fast and incredibly cheap and the results are perfect.

Poppy

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Joined: 25/07/2019
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Posted: 10:30am 11 May 2020

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Damned, I�ve seen the magic

Please allow me some more naive bothering, but I don�t get the further circumstances.

The Zip-Package is loaded up and the site shows a calculation after processing it.

Now I get the following:

Charge Details
Engineering fee: �3.68
Board: �4.14

Calculated Price: �7.82
Weight: 220g

5 PCB�s are checked on the left, so is this the pricing for finally 5 PCB�s or just for a single one, so to times 5?

5 Boards = �4.14 ?!?

And will the product just be like the examples You and Geoff showed here in quality?

Andre ... such a GURU?

matherp
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Posted: 10:40am 11 May 2020

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Price for 5 is �7.82 i.e �1.65 each. The engineering fee gets amortized if you order more so the unit price gets even cheaper. All the boards pictured in this thread come from JLC using exactly that service - quality is always excellent.

Postage will double the cost and there will be a small VAT payment but all these are taken care of if you use their Euro-packet service

Poppy

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Joined: 25/07/2019
Location: Germany
Posts: 486

Posted: 01:58pm 11 May 2020

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I am really astonished by this cheap price, actually I do not care so much about "low prices", but a great side effect will be that the full charge will probably stay under 22 Euros (actually 26 I think) not triggering any german customs duty and those would cause some nasty work.

So one final question, please:

Will I get a completely satisfying board, ready to mount/assemble myself, all including drilling, coating, cut outs etc. pp.

If all yes this is a real epiphany concerning electronics for me .. like magic!

Not kidding!

Andre ... such a GURU?

matherp
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Joined: 11/12/2012
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Posts: 10070

Posted: 02:08pm 11 May 2020

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Quote Will I get a completely satisfying board, ready to mount/assemble myself, all including drilling, coating, cut outs etc. pp.

Yes. Yes. Yes. The board you see pictured in the thread are exactly as we receive them less the components of course.

Poppy

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Joined: 25/07/2019
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Posts: 486

Posted: 04:16pm 11 May 2020

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Now the CMM2 even makes more sense than the CMM1 for absolute Beginners for having no SMD-CPU-Soldering-Issue!

Great, I think MMBASIC reached a huge step-up through this!

Thanks for Your support!

Andre ... such a GURU?

cdeagle
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Joined: 22/06/2014
Location: United States
Posts: 265

Posted: 06:58pm 11 May 2020

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I've recently received the CMM2 board from CircuitGizmos. It's quite compact. Another project well done by Geoff, Peter and other thebackshed folks.

I'm running MMBASIC 5.05.02RC19. Most features seem to be working except I've noticed the following;

(1) I'm using a wired AmazonBasic USB keyboard. The " key is switched with the @ key. All other keys are in the right places. The screen echoes numerous prompt ">" symbols sometimes.

(2) the system does not retain the keyboard type, calendar date and time, even if I set the OPTIONs and TIME$/DATE$ explicitly.

(3) I don't have access to the SD card. I see a "check disk" message on the main screen and if I type the FILES command I get the message "SD card not found". I have tried two full size SD cards (Kingston and SanDisk) and two SanDisk micro SD cards with adapters. The red SD activity LED is blinking slowly.

I am using VGA straight from the CMM2 to a Samsung monitor.

Any help, insight, quantum mechanics tricks, etc. is appreciated.

CaptainBoing

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Joined: 07/09/2016
Location: United Kingdom
Posts: 2141

Posted: 07:13pm 11 May 2020

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I use JLC for all my "run" boards (i.e. more than 2 or 3) and I have to say their quality is excellent - and dirt cheap!!!

I often end up ordering more than I need purely because the price difference is negligible and I like to have spares - I've got quite a library now and I find that I can re-purpose them or make a project "fit" an existing board by some creative design quite often. Recently used a�Dusk2Dawn light controller with a capacitive dropper just for the DC power side for the temperature module in my new isolation transformer with most of the board unpopulated other than the power side of things. Very nice (I understand droppers are not well liked, but I just need to squeeze off a few mA to run the 'mite+RTC+optoSSR and this is a lot less space and pesos than a mains SMPSU)
Edited 2020-05-12 05:23 by CaptainBoing

matherp
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Posted: 07:37pm 11 May 2020

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Quote 'm running MMBASIC 5.05.02RC19. Most features seem to be working except I've noticed the following;

No battery, flat battery, bad battery connection. Without the battery options and time won't save and will disappear on power-on

SD cards there are two main issues.

1: the card sockets don't hold the card against the contacts tightly enough. Try levering the outer edge of the card and see if you can make it work.

2: some cards need slower signals. Try OPTION SD TIMING CONSERVATIVE but not before you sort the battery issue

Make sure OPTION USBKEYBOARD US is set but not before you sort the battery issue

Once all this works we can look at any othere keyboard issues.
Edited 2020-05-12 05:40 by matherp

cdeagle
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Joined: 22/06/2014
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Posted: 08:21pm 11 May 2020

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Thanks Peter.

Voltmeter shows about 0.3 volts.

matherp
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Posts: 10070

Posted: 09:31pm 11 May 2020

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Should be 3V. Battery is a CR1220 3V cell

You can check the voltage with the CMM2 using PRINT PIN("BAT")
Edited 2020-05-12 07:32 by matherp

Poppy

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Joined: 25/07/2019
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Posts: 486

Posted: 04:58am 12 May 2020

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Still one question concerning JLC-ordering:

About the PCB dimension the "CMM2 Construction Guide" says:
"1 PC board, 128mm x 107mm."

contradicting the detected size by JLC:

"Detected 2 layer board of 103x130mm (4.07x5.11 inches) "

Or is this just due to some board revision lacking a corresponding update of the Construction Guide?

Causing any probs?

Andre ... such a GURU?

Geoffg

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Joined: 06/06/2011
Location: Australia
Posts: 3271

Posted: 06:42am 12 May 2020

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That is just me not measuring the prototype PCB accurately.
I would believe JLC so I will change the parts list.

Geoff

Geoff Graham - http://geoffg.net

matherp
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Posted: 09:22am 12 May 2020

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A new version of the CMM2 firmware V5.05.02RC25 is now available at

http://geoffg.net/Downloads/Maximite/Colour_Maximite_2_MMBasic.zip

This fixes a couple of bugs in the editor.

The editor in the CMM2 is based on �a completely different codeset to the CMM and the Micromites. It allows things like horizontal scrolling so that there is no limit on line-length. Cut and paste is not limited to a fixed number of characters and search is significantly more powerful and includes a replace capability.

Full details for updating the firmware are given in the user manual. No special H/W is required.
Edited 2020-05-12 19:24 by matherp

Bill7300
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Joined: 05/08/2014
Location: Australia
Posts: 159

Posted: 09:56am 12 May 2020

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Poppy said Still one question concerning JLC-ordering:

About the PCB dimension the "CMM2 Construction Guide" says:
"1 PC board, 128mm x 107mm."

contradicting the detected size by JLC:

"Detected 2 layer board of 103x130mm (4.07x5.11 inches) "

Or is this just due to some board revision lacking a corresponding update of the Construction Guide?

Causing any probs?

This is an interesting exchange of information but I am slightly mystified. Where are the pcb files that you are testing on the JLCpcb website. I seem to have seen only the schematic pdf to date?

Bill

Bill

matherp
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Posts: 10070

Posted: 10:12am 12 May 2020

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Quote Where are the pcb files that you are testing on the JLCpcb website. I seem to have seen only the schematic pdf to date?

Geoff's first post - construction pack

Poppy

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Joined: 25/07/2019
Location: Germany
Posts: 486

Posted: 11:57am 12 May 2020

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matherp said

Quote Where are the pcb files that you are testing on the JLCpcb website. I seem to have seen only the schematic pdf to date?

Geoff's first post - construction pack

Exactly!

https://www.thebackshed.com/forum/ViewTopic.php?FID=16&TID=12105#145874

----

Still something, but only correct me if I am stupidly wrong.

I will change the colour (being automatically set to green) manually to blue and will luxuriously

set "Remove Order Number" to YES.

The first times I checked up the JLC upload I thought to have seen that changing colour from green sets up a special fee, but the last time it didn�t ... or I am just confusing it playing around with other parameters like "ROHS" and so on.
Right now it appears only to delay the production for about 2 more days without any extra costs.

Actually I am not sure if customs will kick it back to sender being non ROHS and having no positive information concerning, being printed on the board.

So I think it actually is better to stay under 22 Euros all in all to fly under their radar or otherwise taking the full monty with official ROHS.

JLC claims to deliver their EuroPacket within 5-7 business days ... and actually I cannot believe that for those few bucks they charge.

But probably still a part of the whole Magic ...

Probably I am already too old for it all ....

https://www.youtube.com/watch?v=tt4cR9szMS8

Andre ... such a GURU?

cdeagle
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Joined: 22/06/2014
Location: United States
Posts: 265

Posted: 12:49pm 12 May 2020

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Updates to my "fun with the CCM2".

Still no progress getting the SD card to work. Tried adding electrical tape to "top front" of the SD card. Tried "conservative" setting. Tried other SD cards.

Board communicates with Teraterm and Putty.

STM programmer does not recognize serial port on CCM2. Updated the firmware by removing H7XXI from motherboard, connecting directly to the H7XXI (power switch to usb, config switch to system.

Ordered new CR1220 battery.

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