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Phil.
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Joined: 20/11/2017
Location: United Kingdom
Posts: 9

Posted: 12:13pm 20 Nov 2017

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Can you address an SD card from a Standard Micromite? No. Well why not?
Must be the Firmware overhead exceeds the available space. It's got the pins.
Any way to push this limit?

Why am I asking? Well I can talk to a uSD card from PIC16F876 (for example) using Assembly to a 4D Systems Microdrive via serial. Works well.

But 4D Systems have stopped selling the Microdrive. None anywhere. Bother!

Jumping from Pics to Micromite seems do-able - I can see the steps but haven't jumped yet. But Micromite Plus seems a very big leap. It can do stuff I don't need.

It's like buying a wedding cake when all you really wanted was a cereal bar.
Talking to an SD card directly looks really tricky so I am not surprised it takes a lot of Firmware. All too hard for me.

So is there a way for a simple controller to talk to SD? By the way, Rasp-Pi and Arduino's look just as hard.

First post. A wind turbine on my house would definitely get feedback from my neighbours in suburban Essex, UK!

twofingers

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Joined: 02/06/2014
Location: Germany
Posts: 1772

Posted: 01:30pm 20 Nov 2017

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Hi Phil,
this is what you can do with a Micromite (MM2) and a SD card. For more more useful informations, please read Peters (matherp) profil. The "bigger" MMs do the SD card support much better!
Best Regards and welcome to the TBS
Michael

‚My name is Ozymandias, king of kings
Look on my works, ye Mighty, and despair!‘
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and ...

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 11888

Posted: 01:51pm 20 Nov 2017

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This thread has the latest version

twofingers

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Joined: 02/06/2014
Location: Germany
Posts: 1772

Posted: 02:01pm 20 Nov 2017

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@Peter
ooops! Sorry!

‚My name is Ozymandias, king of kings
Look on my works, ye Mighty, and despair!‘
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and ...

Phil.
Newbie

Joined: 20/11/2017
Location: United Kingdom
Posts: 9

Posted: 02:58pm 20 Nov 2017

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Thanks each. Looks good. Now the work starts!

For info I survey the local creek and estuary for my yacht club. So log GPS and depth on a uSD card and process back home on a PC running Basic to make charts.

I wanted to store tide data and do some sums while afloat. Maybe show corrected depth while surveying. Might be a long job. For interest here are links to the results so far.

http://www.benfleetyachtclub.org/files/Moorings/Ray_Charts_Part1_Nov_2016.pdf
http://www.benfleetyachtclub.org/files/Moorings/Ray_Charts_Part2_Nov_2016.pdf

Thanks again. I would never have found those refs without you.

CaptainBoing

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Joined: 07/09/2016
Location: United Kingdom
Posts: 2171

Posted: 05:01pm 20 Nov 2017

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Hello Phil. Nice project!

matherp produced the gerbers for a navigation based MMeXtreme (I think White Wizzard on here might still have some - ww?)

This would make an ideal base for your project as it has a slot for a readily available and cheap GPS module, SDCard slot and MMXbasic (so you can write to the card natively) and even VGA output so if you want to plug it into a small monitor on your boat - the world opens up with what you could do with this while afloat - even realtime charting? It has bags or memory and is easily fast enough. I got one a while back and it provides a punchy little computer board with everything onboard (mine was for off-roading).

Coming from a PIC background, One thing to be mindful of - beware the MicroMite PICS are all 3.3V on their supply - there are 5V tolerant I/O pins on them (but not all)... So if you are looking to go to a MM in as a replacement/brain transplant you need to be aware. Sorry if I am teaching you to suck eggs.Edited by CaptainBoing 2017-11-22

WhiteWizzard
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Joined: 05/04/2013
Location: United Kingdom
Posts: 2991

Posted: 10:58pm 20 Nov 2017

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CaptainBoing said matherp produced the gerbers for a navigation based MMeXtreme (I think White Wizzard on here might still have some - ww?)

Yep - currently have 6 of these nice PCBs available. Can customise assembly if that helps - simply email me (although I am just catching up on the E100 BackOrders so may need a day or two before I can fully build one).

WW

Phil.
Newbie

Joined: 20/11/2017
Location: United Kingdom
Posts: 9

Posted: 03:58pm 21 Nov 2017

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That all looks a bit mega and extreme for me. The sort of project that never gets finished. Thank you guys but I think I was looking for the simplest MM that would read a uSD card. If you can store data simply and share it with a PC there are so many possibilities. I will keep looking. Thanks again. Phil.

twofingers

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Joined: 02/06/2014
Location: Germany
Posts: 1772

Posted: 06:29pm 21 Nov 2017

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@Phil,
maybe this is something useful for you (regarding data-logging on a cheap 8MB EEProm)?

Michael

‚My name is Ozymandias, king of kings
Look on my works, ye Mighty, and despair!‘
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and ...

Phil.
Newbie

Joined: 20/11/2017
Location: United Kingdom
Posts: 9

Posted: 07:27pm 21 Nov 2017

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Wow! Impressive. Thanks. Every MM could have one. I need to get to know these - all new to me. Phil.

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