Home
JAQForum Ver 20.06
Log In or Join  
Active Topics
Local Time 22:22 03 Dec 2021 Privacy Policy
Jump to

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 : Silly idea for a new (old) MMBasic port

     Page 4 of 4    
Author Message
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 1196
Posted: 10:25am 22 Nov 2021
Copy link to clipboard 
Print this post

He's used xmodem in the photo, Tom. :) I'm pretty sure it'll work via any serial link, no matter whether it's via a USB stack or a UART. Same with AUTOSAVE. It just sets the system into receive mode to wait for text followed by Ctrl-Z.
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
thwill

Guru

Joined: 16/09/2019
Location: United Kingdom
Posts: 1943
Posted: 10:30am 22 Nov 2021
Copy link to clipboard 
Print this post

  matherp said  Did you look at the picture?


Yes, and quite obviously I am an idiot, but let's be honest we all had some suspicion of that anyway didn't we ?

  matherp said  It will have a standard serial console on a uart.


Remember that bit about being an idiot, well I'm still a hardware/electronics ignoramus too and my attempt to teach myself more about this subject was "rudely" interrupted by some southener and his new-fangled CMM2 device . What will this look like in terms of a socket ? or will it just be four pins on a GPIO.

Anyway sounds good and means my efforts on teaching MMB4L to send code and commands to other 'mites will be transferable, happy days!

Best wishes,

Tom
Edited 2021-11-22 21:09 by thwill
CMM2 Welcome Tape, Creaky old text adventures
 
CaptainBoing

Guru

Joined: 07/09/2016
Location: United Kingdom
Posts: 1686
Posted: 10:38am 22 Nov 2021
Copy link to clipboard 
Print this post

  Mixtel90 said  ... VEGemite ...


oh please!!! if there is a god, this will become the VegaMite
 
Volhout
Guru

Joined: 05/03/2018
Location: Netherlands
Posts: 952
Posted: 11:22am 22 Nov 2021
Copy link to clipboard 
Print this post

There is a God. And he is monochrome green (at least Peter's VGA screen was). So VeganMite is another option...
If nothing goes right ... turn left
 
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 1196
Posted: 12:25pm 24 Nov 2021
Copy link to clipboard 
Print this post

I rather fancy the idea of a PCB for this:

VGA socket (with link(s), resistors/diodes to select white/green/amber?)
PS/2 keyboard socket
mini USB socket for console with on-board Microbridge
Connector for external 5V input (with diode isolation from USB supply)
Battery for RTC

Not sure about some sort of joystick/controller socket. I don't know if Peter wants to support the Nunchuk? A PC switched joystick is clever enough for me. :)
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 5460
Posted: 01:01pm 24 Nov 2021
Copy link to clipboard 
Print this post

I'm revisiting SD vs flash so hold off on PCB design. Will confirm in the next week or so
 
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 1196
Posted: 01:07pm 24 Nov 2021
Copy link to clipboard 
Print this post

Oh, I'm in no panic. Just floating ideas.  :)
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
Poppy

Guru

Joined: 25/07/2019
Location: Germany
Posts: 484
Posted: 03:37pm 24 Nov 2021
Copy link to clipboard 
Print this post

FLASH or not?!?!

No idea, but keep on, this issue is getting more and more and even more interesting!

Andre ... such a GURU?
 
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 1196
Posted: 04:16pm 24 Nov 2021
Copy link to clipboard 
Print this post

Yes, Flash, Gordon.  ;)

TBH I rather fancy the idea of using flash storage. It works really well on the PicoMite now. However, SD also has its attractions. I guess I'm not bothered either way at the end of the day. :)  It's just a pity that if you want a Black Pill with a pre-mounted flash chip in the UK you'll have to order one from China as no-one stocks them AFAIK. They aren't that bad to solder, but fiddly - and on the Black Pill you almost certainly have to solder it before the pins go on.
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
Volhout
Guru

Joined: 05/03/2018
Location: Netherlands
Posts: 952
Posted: 05:08pm 24 Nov 2021
Copy link to clipboard 
Print this post

It is not that bad, 8 little drops of paste, put the chip, and some hot air ( pencil beam).
If nothing goes right ... turn left
 
lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 1786
Posted: 06:05pm 24 Nov 2021
Copy link to clipboard 
Print this post

  Volhout said  some hot air ( pencil beam).


Can you provide a link to a suitable hot air soldering pencil?
 
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 1196
Posted: 06:52pm 24 Nov 2021
Copy link to clipboard 
Print this post

I have one of These (85D). I've only tried soldering with it once, but I wasn't happy with the results. I need much more practice really.

I read somewhere that you have to be careful with that model using the narrowest nozzle as it's possible to get it to overheat. I can't confirm that though.

It's always a good idea to check the mains wiring, apparently, as sometimes there's no earth connection.  
Edited 2021-11-25 04:53 by Mixtel90
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
CaptainBoing

Guru

Joined: 07/09/2016
Location: United Kingdom
Posts: 1686
Posted: 09:09pm 24 Nov 2021
Copy link to clipboard 
Print this post

same unit I have. I use it for most of my SMD stuff. never had a problem with it is about 5 years .

top tip is to wind the air right down so it doesn't blow the bits all over the place. Hi for heat shrinking, lo for un/soldering
 
Volhout
Guru

Joined: 05/03/2018
Location: Netherlands
Posts: 952
Posted: 08:25am 25 Nov 2021
Copy link to clipboard 
Print this post

I use a similar device, much older though, but have a nozzle that is 3mm. Yes you have to put the air flow very low (especially with the 3mm nozzle), otherwise your parts will go sailing...

The 3mm nozzle allows you to use it like a soldering iron, you heat pin for pin (mwoah ... few pins at a time). For reworking a chip on an existing design that works finer, since you don't run the risk of heating area's not intended. Especially connector plastics is a worry. Sometimes you have to pack the connector in kitchen foil (metal) before reworking.
If nothing goes right ... turn left
 
lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 1786
Posted: 12:42pm 25 Nov 2021
Copy link to clipboard 
Print this post

@Mixtel90, @CaptainBoing, @Volhout -- thanks for the tips. Don't want to have these little beggers "blowin' in the wind".
 
Poppy

Guru

Joined: 25/07/2019
Location: Germany
Posts: 484
Posted: 01:10pm 25 Nov 2021
Copy link to clipboard 
Print this post

  Mixtel90 said  
TBH I rather fancy the idea of using flash storage. It works really well on the PicoMite now. However, SD also has its attractions.



I think also corresponding to the Picomite for just embedding, flash probably is all being necessary.


But thinking of a new little Beginners-BASIC-Desktop-Computer forwarding the idea of the original Maximite ... SD would be great.


----
PS: Generally for data gathering and saving also being enbedded SD makes sense!
Edited 2021-11-26 02:08 by Poppy
Andre ... such a GURU?
 
     Page 4 of 4    
Print this page


To reply to this topic, you need to log in.

© JAQ Software 2021