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Forum Index : Microcontroller and PC projects : MMEdit

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palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1433
Posted: 08:11pm 15 Sep 2021
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That would explain my confusion.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 789
Posted: 09:19pm 15 Sep 2021
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And mine. LOL
Just shows though, I designed my Backpack without consulting my own documentation (at least, not that diagram). I had every SPI connection wrong and no-one spotted it - they were all looking at the official RPi diagram probably, just as I've done every time I've connected a PicoMite up. It's *very* difficult to spot your own errors. I've just had to print out Peter's master list of I/Os and compare it with a revised diagram, ticking pins off - and I *still* made one mistake.
-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
disco4now

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Joined: 18/12/2014
Location: Australia
Posts: 541
Posted: 11:30pm 15 Sep 2021
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  palcal said  I'll get a new card I'm using an old 4GB card.

I got my last couple from Australia Post. $10 for a 32Gig. Worth checking if they have them still.
Regards
Gerry
 
panky

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Joined: 02/10/2012
Location: Australia
Posts: 878
Posted: 11:56pm 15 Sep 2021
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For info, the attached is the official Raspberry Pi Pico pdf of the Pico pinout (from their datasheet).

Raspberry Pi PicoPinout.pdf
... almost all of the Maximites, the MicromMites, the MM Extremes, the ArmMites, the PicoMite and loving it!
 
phil99
Senior Member

Joined: 11/02/2018
Location: Australia
Posts: 166
Posted: 12:43am 16 Sep 2021
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Re SD card size issue.
The brand can make a difference too. A ten year old 128MB (that's MB) that came with a Canon camera seems to work with everything.
 
robert.rozee
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Joined: 31/12/2012
Location: New Zealand
Posts: 1766
Posted: 02:22am 16 Sep 2021
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as i recall, 4gb was a problematic size for SD cards. initially, only sizes up to 2gb were allowed for in the original SD card standard, but when manufacturers were able to make 4gb cards they found a work-around that allowed 4gb to work.

the standard was soon extended, allowing for much larger cards. in this extension, however, those early 4gb cards (and the work-around they exploited) was not covered. the end result was some 4gb cards would only work in certain devices.

someone else might like to research a little more and find the full story.


cheers,
rob   :-)
Edited 2021-09-16 12:28 by robert.rozee
 
palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1433
Posted: 04:44am 16 Sep 2021
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Had a bit of trouble getting a card was told they are in short supply, Office Works had one.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
palcal

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Joined: 12/10/2011
Location: Australia
Posts: 1433
Posted: 04:45am 16 Sep 2021
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Had a bit of trouble getting a card was told they are in short supply, Office Works had one.
"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 789
Posted: 07:12am 16 Sep 2021
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  palcal said  Had a bit of trouble getting a card was told they are in short supply, Office Works had one.


A problem caused by [Select option], obviously.
                    [Brexit       ]
                    [Afghanistan  ]
                    [Shipping     ]
                    [Covid        ]
                    [Lorry Drivers]
                    [Floods       ]
                    [Fires        ]
                    [Politicians  ]
                    [Clowns       ]

-- Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
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