 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Microcontroller and PC projects : CMM2 Availability ????
Page 1 of 2   |
|||||
| Author | Message | ||||
Rickard5 Guru  Joined: 31/03/2022 Location: United StatesPosts: 463 |
Thankfully Lizby got me one of Peter Mather's Picomite VGA V1.3 PCBs, and I'm so looking forward to building a Picomite boot to basic VGA development workstation. but in all my excitement Youtube has decided I need too watch a bunch of videos on the CMM and CMM2. Any way I saw one on the 2-Bit Guy's show and was IMPRESSED AND I WANT ONE, but every one that is selling one is unavailable that I can find, Any Ideas where I can Buy a CMM or CMM2 or was I too late to the Party :( I may be Vulgar, but , while I'm poor, I'm Industrious, Honest, and trustworthy! I Know my Place |
||||
Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
Probably too late to the party. The bloody ARM chip at the heart of the CMM2 generation 1 or generation 2, is completely out of stock on a global scale now, and most component houses have been telling me that the lead time is now 18 months. Yes - you read that right - 1.5 YEARS before more chips will be available. October 2023 is what I am being told these days, and there is no guarantee that they won't just push that date back further. Chip shortages are staggeringly bad at the moment, with even the likes of 7805 or 3940 linear regulators also being very hard to find in some places of the world, and the ubiquitous 7805 is a regulator that you could pretty much guarantee would ALWAYS be available everywhere - till the virus came along and destroyed production of so much stuff in so many areas of the world, it's gonna take years to rebuild stock levels of stuff like this, unfortunately.  I'm keeping the CMM2 up on my website FOR NOW, listed as sold-out, but if I can't locate more chips in the next two or three months, I think I will take it off the website completely. There is little point in having it up there, if customers have to wait ONE AND A HALF YEARS to get one. That's also why I am not accepting back-orders for them either, as it's a bit unethical to take people's money, with no idea when you will actually be able to supply something. There's probably something in the trading laws that would make that illegal too or something, as backorder is only for things you KNOW you can get, but there are delays. With the ARM chip today, all we DO know, is that we will not be able to get the chips for a very, very long time. It's not a good situation. Thanks very much, virus.  Edited 2022-04-04 10:54 by Grogster Smoke makes things work. When the smoke gets out, it stops! |
||||
| Rickard5 Guru Joined: 31/03/2022 Location: United StatesPosts: 463 |
WOW Looks like I'm selling my car, or Girlfriend too pay too much for one on eBay. I'm gonna miss her, but hey what am I gonna do here, you can't expect me to sell my car? I may be Vulgar, but , while I'm poor, I'm Industrious, Honest, and trustworthy! I Know my Place |
||||
| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3378 |
I have one of these with the chips soldered on by JLCPCB (including the ARM MPU), but without the connectors. I had to order two to get them to do the soldering. I'll never finish the first one, since I'll never be able to solder on the USB-C socket. The problem is, I'm 6 weeks away from being where the board is. If you're interested, I'll mail it to you when I get there. BOM for needed connectors is in the documents in the site linked to. PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
||||
| Amnesie Guru Joined: 30/06/2020 Location: GermanyPosts: 675 |
I saw this comming here in Germany too. This is one of the reasons why the picoMite is way more interesting, it is way cheaper and ALL parts are available in huge amounts :) I burnt one CMM2 chip and now it is lying around. For this money I build the third picoMite with my own PCB and it costs next to nothing! |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
@ Rickard5: BE VERY CAREFUL about buying chips on eBay. You should only ever buy chips like the 176 pin ARM monster, from respectable parts houses such as RS, Mouser, DigiKey etc. eBay and AliExpress are infested with clone chips or outright fake chips, and I advise you to NOT buy the ARM processor chip from those places. You might be lucky and get a genuine one, but you also might be unlucky and get an unstable clone, a factory reject, or an outright fake. That would cause you stress you could easily do without, especially these days.  Someone here MIGHT have a CMM2 unit that they have played with, and don't really want anymore, and they might be able to offer to sell it to you, but that's about the only way you are gonna get hold of one at the moment. If any member here can do that, I am sure they will post here or send you a private message. Smoke makes things work. When the smoke gets out, it stops! |
||||
| al18 Senior Member  Joined: 06/07/2019 Location: United StatesPosts: 228 |
FYI the PicoMiteVGA falls somewhere between the CMM and the CMM2 is terms of speed and has an enhanced version of MicroMite Basic compared to the CMM. |
||||
| Rickard5 Guru Joined: 31/03/2022 Location: United StatesPosts: 463 |
lizby if you get to where those boards are I'd love to have one just let me know How Much I can send you for one, I got a local guy that can get the usbc reflowed on :) PM Me Thanks man wish you were in Texas I'd Buy you a Beer or 10 :) I may be Vulgar, but , while I'm poor, I'm Industrious, Honest, and trustworthy! I Know my Place |
||||
hitsware2 Guru Joined: 03/08/2019 Location: United StatesPosts: 719 |
https://www.olimex.com/Products/Duino/Duinomite/DUINOMITE-MEGA/open-source-hardware https://www.olimex.com/Products/Duino/Duinomite/DUINOMITE-eMEGA/open-source-hardware my site |
||||
Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7937 |
It got very nasty. See Geoff's web site. https://geoffg.net/OpenSource.html Olimex used up most of the available IO pins on the Duinomite but conveniently forgot that when they advertised the number of I/O. Note that Olimex recommend programming in C to use these boards. It's unlikely that MMBasic will run on them. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
||||
| al18 Senior Member Joined: 06/07/2019 Location: United StatesPosts: 228 |
My head hurts after reading about the history of those Olimex boards! It’s amazing Olimex still sells such a poorly supported board. |
||||
| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7937 |
The cost is low because they don't support them, I suppose. Note that it's not the same processor as the CMM2. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
||||
| al18 Senior Member Joined: 06/07/2019 Location: United StatesPosts: 228 |
The Olimex board uses the same chip as the original CMM. The PicoMiteVGA is a much better deal IMHO |
||||
| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7937 |
It's certainly a lot cheaper and less cluttered - and has better documentation. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
||||
| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 5091 |
Could the duinomite mega be based on the monochrome maximite? On geoffs website there is a special, older, mmbasic version for the duinomite. On the webpage of the monochrome maximite. Edited 2022-04-06 03:22 by Volhout PicomiteVGA PETSCII ROBOTS |
||||
| hitsware2 Guru Joined: 03/08/2019 Location: United StatesPosts: 719 |
I have a ' SMD Colour Maximite: V1.5 ' ( Works like a charm ) and a ' RetroMax 1.4a ' ( I could not get video out ) I would like to give them a good home. The closer to Sacramento, California , U.S.A. the better ..... my site |
||||
| hitsware2 Guru Joined: 03/08/2019 Location: United StatesPosts: 719 |
For sure real similar. I had one and there was some difference in pinouts ( as noted ( and IIRC ) ) my site |
||||
| al18 Senior Member Joined: 06/07/2019 Location: United StatesPosts: 228 |
Hitsware2, Is the SMD Colour Maximite v1.5 really a Colour Maximite 2? If so, I’m interested, though I’m on the East Coast (NJ). What are you asking? |
||||
| William Leue Guru Joined: 03/07/2020 Location: United StatesPosts: 405 |
This is a damn shame! I know that Piotr Siwy and Circuit Gizmos have nothing to sell; I was hoping that someone else had a stock, but I see that is not happening. The CMM2 has a great future as a general-purpose box for all kinds of IOT, data collection, and other real-world applications as well as being, of course, an excellent retro-computer. I'm doing my best to keep interest up, even in the absence of any sellable units. -Bill |
||||
| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7937 |
There are simply no ARM chips to be had - by anyone. They'll probably reappear eventually, but industry will be buying up all that can be made at first. Luckily the Pico has turned out to be an excellent MMBasic platform, even though it's not up to ARM standards. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
||||
| Page 1 of 2 |
|||||
 Print this page |
 |
The Back Shed's forum code is written, and hosted, in Australia. | © JAQ Software 2025 |
