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Yes, I can splice into it or just wire a logger into a terminal block on the chain. A logic analyzer would do it, but I'd really like something that understands the MODBUS commands and can list what commands have been sent to each device, and report the responses, if any. I suppose I'm looking for a rs-485 MODBUS equivalent to an Ethernet port sniffer, but I'm not having any luck finding one. [sigh] Oh well, just thought I'd ask. Thanks!
Will Rogers never met me.
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If you are comfortable with this sort of thing, a homegrown protoboard approach is an option. I'm currently working on a project where several Arduino devices communicate over a rs485 bus. I use Max3488 chips to switch between balanced rs485 lines and the Arduino's single ended Tx/Rx signals. For troubleshooting, I run an Arduino and Maxx3488 8 pin DIP on a protoboard. Once you have that, you can snoop on the 485 bus with a very few lines of code and a serial monitor.
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That's a definite possibility, and have a few Arduino boards lying around here. Trouble is, I have no time to play anymore! Grrr!!!
Will Rogers never met me.
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Wordle 1,090 5/6
🟨🟨⬜⬜🟨
🟨⬜🟨⬜🟩
🟩⬜⬜🟩🟩
🟩🟨⬜🟩🟩
🟩🟩🟩🟩🟩
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Wordle 1,090 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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Wordle 1,090 3/6
⬜⬜⬜🟨🟨
🟨🟩🟨⬜⬜
🟩🟩🟩🟩🟩
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Wordle 1,090 4/6
🟨🟨🟨⬜⬜
⬜🟨🟨🟨⬜
🟩🟨⬜⬜🟩
🟩🟩🟩🟩🟩
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⬜⬜🟨🟨⬜
🟩🟩⬜⬜⬜
🟩🟩🟩🟩🟩
if I'd gone with my gut feeling I'd of got it in two
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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Wordle 1,090 5/6*
🟩⬜🟨⬜⬜
🟩⬜⬜⬜🟩
🟩⬜⬜⬜🟩
🟩⬜⬜⬜🟩
🟩🟩🟩🟩🟩
Happiness will never come to those who fail to appreciate what they already have. -Anon
And those who were seen dancing were thought to be insane by those who could not hear the music. -Frederick Nietzsche
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Wordle 1,090 4/6
🟩⬛⬛🟨⬛
🟩⬛🟨🟨⬛
🟩🟩🟨⬛⬛
🟩🟩🟩🟩🟩
Ok, I have had my coffee, so you can all come out now!
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Wordle 1,090 3/6
⬛🟨⬛🟩⬛
⬛⬛⬛🟨⬛
🟩🟩🟩🟩🟩
GCS/GE d--(d) s-/+ a C+++ U+++ P-- L+@ E-- W+++ N+ o+ K- w+++ O? M-- V? PS+ PE Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
The shortest horror story: On Error Resume Next
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Wordle 1,090 3/6*
🟩🟨⬛🟨⬛
🟩🟩🟨⬛⬛
🟩🟩🟩🟩🟩
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I googled that knowing what I'd find, and hit pay dirt, unsurprisingly on the first link on my first stab.
My brain is now filled with crap like this from doing embedded, both professionally and IoT stuff as a hobby.
It's making me a google ninja in some areas at least.
As to why I need it, well I'm trying to solve the case of the mysterious disappearing flash space.
My device is rated to have 16 megabytes, but I'm only seeing 1MB available for my code.
I don't know if this will fix it, but eventually google will lead me there, and probably quicker than an LLM could.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Check the scatter file or the linking window, it might have a segmented memory space.
GCS/GE d--(d) s-/+ a C+++ U+++ P-- L+@ E-- W+++ N+ o+ K- w+++ O? M-- V? PS+ PE Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
The shortest horror story: On Error Resume Next
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It didn't.
Some PIO update somehow either nuked the propagation of the flash partition tables to the project, or it is ignoring them altogether and going to a very conservative default (for an ESP32) of 2MB, which I get half of normally.
So what I did was I got that 16MB.csv file which specifies the standard partitions on an ESP32 with 16MB flash. Then I referenced locally within the project instead of trying to get PIO to just work with what it had, because it wasn't
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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I posted something a long while back. It was a post about my speed records driving on sidewalks.
How Fast Do You Drive On Sidewalks? [^]
I have a little bit of housekeeping I'd like to do.
I won't name any names, but one individual
decided to reply to a thread of mine
with a rant. He wasn't very nice.
He and a couple dozen others immediately
piled on, attacked me with derogatory
slurs, incessantly mocked everything they
could about me, and even expressed humor
about the death of one of my family members.
That's the one reason that I post this thread.
The individual who instigated the whole mess
by posting his rant needs to be called out for
subjecting another person to such defamation.
For those of you who participated in this,
take a look at the truth. Review the evidence,
and then take a look at yourselves. If it
doesn't amuse you, it means you shouldn't
take yourself so seriously.
Below is a post that I wrote in another thread.
It demonstrates the humor of the truth. That was
many months ago, and no one saw that post.
For the record, here it is. 
Ah, ha! Yes! Do any of you remember my thread asking you guys
how fast you drive on sidewalks?
**Yes, I have driven 63 mph on a sidewalk!
OK, back on topic. I think GTA is a great game!
I used to play Grand Theft Auto: San Andreas back in 2007.
I never actually learned how to play the game.
I still haven't a clue how to play it.
I had every cheat code memorized.
I spent most of my time shooting down police helicopters
by the dozens with an endless supply of rocket launchers.
Then, I discovered how to turn off gravity.
I would magically materialize a military tank out of thin air,
turn off gravity, get inside the tank, and repeatedly fire
the cannon. The recoil would accelerate the tank in reverse,
and once I got up to speed, I would take off into the air.
Sometimes, I'd land the tank on the road and, *GASP* veer off
the road and onto the sidewalk! 
DISCLAIMER: I'm sorry to all of you who are reading this.
It's not my intention to traumatize anyone by what I'm saying.
May God bless the many loved ones in your life who were lost
being hit by vehicles driving down sidewalks.
I can only imagine how amazing the newest versions of GTA are.
If you can still turn off gravity, materialize unlimited
military tanks out of thin air, and play the game as a
flight simulator, I want to play it! 
**That would have turned out to be a fun thread if it weren't for an unnamed social justice hero who derailed that thread with his preposterous act of virtue signaling. I apologize to all of you who read that thread. For those of you who have lost loved ones (many of you, I'm sure) from being hit by cars driving on sidewalks, it wasn't my intention to traumatize you or trigger you to have a PTSD episode. I've had a family member who was killed after being struck by a vehicle as a pedestrian. It's an awful thing, but I'm glad it didn't destroy my sense of humor.
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Dude, I just read the original thread. It seems that instead of telling everyone else to stop taking themselves seriously, maybe you should begin to take yourself less seriously.
The difficult we do right away...
...the impossible takes slightly longer.
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Richard Andrew x64 wrote: Dude, I just read the original thread. It seems that instead of telling everyone else to stop taking themselves seriously, maybe you should begin to take yourself less seriously.
Oh, the irony of it all. Are we done here?
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Steve Raw wrote: Are we done here?
Well, we would be if you didn't take yourself so seriously.
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I live in India, and we have footpaths; i believe the same as sidewalks. As per traffic rules in India, it is forbidden to drive on footpaths.
However a number of two-wheelers, I mean bike riders, do ride on footpaths. I have myself stopped a few such ones, some years ago.
Nowadays, most metropolitan cities in India, and even smaller cities have a number of traffic cameras installed, and photos of such violations are stored in databases. And the traffic ticket is sent home. Hopefully these cameras act as deterrents.
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Amarnath S wrote: I live in India, and we have footpaths; i believe the same as sidewalks. As per traffic rules in India, it is forbidden to drive on footpaths.
Of course. That's a very important law. I should clarify that the context of my original thread about driving on sidewalks was in the context of a video game. That's what makes it funny to me.
The game is commonly referred to as GTA for short. It stands for "Grand Theft Auto", and its setting is meant to be in San Andreas, California. Driving on sidewalks is prohibited in Cali, too. But, remember, the context is in reference to how I play a video game.
Here's a link to the game on Google if you're curious. GTA San Andreas [ ^]
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Agree, now it is clear.
As you said, context is important. And this platform being global, it isn't obvious unless context is set.
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GTA is a "fantasy game" - it allows us to do things we wouldn't dream of is the real world. And as such, it is heavily rigged towards being pretty much impossible to play without breaking the law!
So yes, in the game, I do drive on sidewalks sometimes. In fact, if you give me a delivery van, there is a very good chance it's going to be painted red by the time I get to the destination - it's that kind of game. And I can live with that because no real or virtual sentient beings (and I'd start with cats being sentient and go on up) were harmed in any way. IRL, I'd never do that, even if I believed the sidewalk was empty!
And yes, if you install a good mod menu you can turn off gravity and such like in the latest game and do what you want - just don't do it in a populated online session as you will wreck the game for everybody else and that isn't fair!
"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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I like "the cheese grater"
You drive an ambulance - has nice large flat sides - sirens on if you prefer barreling down the street so you can ragdoll peds by sideswiping them. Except you do it when there's a chain link fence to grind them against.
Good times.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Have you tried attacking motorcycle NPCs with the Ramp Buggy? 
(If you haven't got one, you can borrow mine).
"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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