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What was the mummy's favorite music?
Wrap.
"A little time, a little trouble, your better day"
Badfinger
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Today I finally got a NXP PCAL6534 34-bit GPIO expander working. I couldn't before. It wasn't showing up as an I2C device, even when I scanned the bus. I solved the problem, but the evaluation board is just funky.
Furthermore I just spent the last 4 hours (mostly) poring over a datasheet for because nobody wrote a driver for it, aside from one for linux which is actually weird considering it's not really meant for full fledged computers.
I got it working, and ported a stepper motor driver library to work with it, such that you can tie most of the motor's lines to the expander, and you only need one for each attached directly to the MCU (because it's time sensitive.)
All in about 4.5 hours today, which is over twice as long as I like to work in a day, but I had a lot to do. From what I understand of my pace, and just generally what I know of work like this is I did it very quickly so I feel pretty good about it, especially given it involved datasheets, which usually make me cross-eyed, and then the finicky and obscure hardware on top of it.
Why we didn't go with a more common expander I will probably never know. I'm not a hardware engineer.
To err is human. Fortune favors the monsters.
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You are even better than a hardware engineer.
You are a hardware/software engineer.
Pretty good one.
You have a bigger picture.
A good thing.
"A little time, a little trouble, your better day"
Badfinger
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Why?
Because the marketing department wanted to say: “cutting edge technology using NXP PCAL6534 34-bit GPIO expander”
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Funny thought, but I know that's not how this happened.
I know the guy that made the decision. I could ask him, but he probably just went with NXP because he's used to them, and this is what they had. He's not up on the software end of things, so the fact that NXP doesn't do a good job (apparently) of providing source code to work with their hardware is almost certainly lost on him.
It's not a big deal - if anything it means more work for me, and that's not always a bad thing - not when I'm already ahead anyway.
To err is human. Fortune favors the monsters.
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Wordle 568 5/6
⬛⬛🟨⬛🟨
⬛⬛🟩🟨🟨
🟨⬛🟩🟨⬛
🟨🟨🟩⬛⬛
🟩🟩🟩🟩🟩
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Quote: Wordle 568 3/6
🟨⬜⬜⬜🟨
⬜🟨🟨⬜⬜
🟩🟩🟩🟩🟩
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Wordle 568 4/6
🟨⬜⬜🟨⬜
⬜🟨🟩🟨⬜
⬜⬜🟩🟨🟨
🟩🟩🟩🟩🟩
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Wordle 568 3/6
🟨🟨🟨⬜🟨
🟩🟨🟨⬜🟨
🟩🟩🟩🟩🟩
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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⬜🟨🟨⬜🟨
🟨🟨🟨⬜⬜
⬜🟩🟩🟨🟨
🟩🟩🟩🟩🟩
Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming “Wow! What a Ride!" - Hunter S Thompson - RIP
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Wordle 568 3/6
⬛🟨🟨⬛🟨
⬛🟨🟨🟨🟨
🟩🟩🟩🟩🟩
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Wordle 568 5/6
🟨⬛🟨⬛🟨
🟨🟨🟨🟨⬛
🟩🟨🟨⬛🟨
🟩⬛🟨🟨🟩
🟩🟩🟩🟩🟩
Get me coffee and no one gets hurt!
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Had a chance to meet him back in 71 at a night club I was working at.
The man could play the blues!
PartsBin an Electronics Part Organizer - An updated version available!
JaxCoder.com
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Something jealous
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Nice
"A little time, a little trouble, your better day"
Badfinger
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#Worldle #351 2/6 (100%)
🟩🟩🟩⬜⬜⬆️
🟩🟩🟩🟩🟩🎉
https://worldle.teuteuf.fr
easy
"A little time, a little trouble, your better day"
Badfinger
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#Worldle #351 3/6 (100%)
🟩🟩🟩🟨⬛↗️
🟩🟩🟩🟩🟨⬆️
🟩🟩🟩🟩🟩🎉
https://worldle.teuteuf.fr
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Still can do that thang
PartsBin an Electronics Part Organizer - An updated version available!
JaxCoder.com
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I have a table of numbers on a spreadsheet, let's say, 10 rows and 12 columns.
I want to draw a line in diagonal from left bottom corner to right top corner.
How can I do that? (not do it on a chart)
in Excel version 5.0, it has such function to draw a trendline directly on this table.
diligent hands rule....
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1.) Maybe not the right place to ask that. Anyway don't care too much about that
2.) Quote: 'How can I do that? (not do it on a chart)'
When not in a chart, where else?
3.) Quote: 'in Excel version 5.0, it has such function to draw a trendline directly on this table.'
Now we are back in a chart, right? Where a trend line can be shown other than in a chart?
4.) Trend line exists also in the current version of excel.
5.) 10 rows and 12 columns means something like 11 functions. What is your idea to get _one_ trend over 11 functions?
Only my two cents
modified 7-Jan-23 11:41am.
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my question comes from an old investment book and it used old terms in Excel version 5.0.
So I assume only gurus might know this answer...
diligent hands rule....
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I'm sure I'm pretty save with excel and trend lines what else
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