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JCDammeyer's 42 projects

Susquatch said:
I wonder if this is possible in a Deere tractor..... Standard code readers don't work. I'd love to be able to get at my tractor electronics.

Just had an issue this week with my 3pt hitch. Had no idea what was wrong and no time to figure it out. Plowing can't wait for winter so I had to take it to the dealer. It's not OBD compliant. It was just a sticky electronically controlled spool valve.
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I started with just a scope, then used the cheapest as in $10 OBD2 decoder like this:

I would do a deep internet dive for John Deere protocol, it's probably out there somewhere.

When I was decoding the messages, I found some here, some there, IIRC there was one that I didn't know what is was for, but figured I will send it anyways because that's what the vehicle CPU is doing.

B898EA8B-1819-46F3-B0EA-6E5462F30ABD.jpeg
 
slow-poke said:
I started with just a scope, then used the cheapest as in $10 OBD2 decoder like this:

I would do a deep internet dive for John Deere protocol, it's probably out there somewhere.

When I was decoding the messages, I found some here, some there, IIRC there was one that I didn't know what is was for, but figured I will send it anyways because that's what the vehicle CPU is doing.

View attachment 73963
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Here's what Google showed up when I asked if John Deere used J1939.

Yes, John Deere tractor messages use the SAE J1939 standard for many of their communications, particularly for drivetrain and engine data. However, John Deere also uses the ISO 11783 standard, also known as ISOBUS, for agricultural-specific applications like integrating implements from different manufacturers and displaying information on a universal terminal.

  • SAE J1939: This standard is used for a wide range of heavy-duty vehicle communication, including engine and drivetrain diagnostics and control. John Deere uses it to ensure consistent communication within its own vehicle systems.
  • ISO 11783 (ISOBUS): This standard is designed specifically for the agricultural industry to allow for greater interoperability between different brands of tractors and implements. It can support more complex data and functionalities, like those needed for precision farming, compared to the base J1939 standard.
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www.csselectronics.com

ISOBUS (ISO 11783) Explained - A Simple Intro [2023]

What is ISOBUS (ISO 11783)? In this tutorial we provide the basics on ISOBUS incl. history, connectors, standards and how to log tractor/implement data in practice!
www.csselectronics.com www.csselectronics.com

They make it look more complicated than it really is because of the need to adhere to the concept of the 7 layer ISO model.

But underneath the covers it's still a CAN bus message that has a 29 bit identifier and 8 data bytes per message. The newer CAN FD has changed that to have 64 bytes per message and higher data rates for the message part but unlikely that will be used on tractors.

The NMEA 2000 protocol is largely used in the marine environment and therefore also has GPS type information as part of it.

And then there's also MilCAN used for military vehicles. Here headlights, taillights, signal light lever even the turret all talk MilCAN which is a modification of the J1939 protocol.
MilCAN_LEDHeadlights.jpg.

Where these vehicles run J1939 for control of headlights, tail lights trailer lights etc.
CV90-Ukraine-1.jpg
 
Well after more than 25 years I switched from FIDO to Freedom Mobile. It was incredibly easy. Will be cheaper and when we go to Puerto Vallarta as they include Mexico in their roaming. I've read they have lousy service in places because they are smaller. I'm sure like FIDO was swallowed by SHAW and the SHAW swallowed by ROGERs that Freedom Mobile will also become something else but for now lower monthly costs, more data and Mexico. Plus for Europe also data without having to pay a daily roaming fee from FIDO.
I'll post reviews as events happen.
 
jcdammeyer said:
Freedom Mobile will also become something else but for now lower monthly costs, more data and Mexico
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Already happened. It was purchased by Videotron which is itself a subsidiary of Quebecore. They have their own infrastructure in a few big cities, but they primarily use Telus, Bell, & Rogers towers.
 
I have been using Freedom for quite a while.

+ Definitely less expensive
+ Travel packages last a month and cost <1/2 weekly package at previous provider
+ They don't invent fake data like Rogers does

- Coverage is not as good but acceptable
 
Susquatch said:
Already happened. It was purchased by Videotron which is itself a subsidiary of Quebecore. They have their own infrastructure in a few big cities, but they primarily use Telus, Bell, & Rogers towers.
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Apparently - Telus doesn't have towers, but I have no evidence. My cell repair guide says your phone locks to whatever tower is available but may show Bell, even if it's a Rogers tower. Some agreement they have

I do get T-mobile and Verizon in the USA, but in Canada I either get Rogers or nothing
 
Chicken lights said:
Apparently - Telus doesn't have towers, but I have no evidence. My cell repair guide says your phone locks to whatever tower is available but may show Bell, even if it's a Rogers tower. Some agreement they have

I do get T-mobile and Verizon in the USA, but in Canada I either get Rogers or nothing
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I have an app on my phone that tells me what tower I'm linked to, who owns it, where it is, and on what cellular band and speed I'm connected at. Here at the farm it's usually a tower in Cleveland across the lake even though there is a bell tower just 3km away.
 
Reminds me that it wasn't that long ago that we'd get caught roaming by the towers around Port Angeles when down at the beach here.
 
Golem Pens said:
Reminds me that it wasn't that long ago that we'd get caught roaming by the towers around Port Angeles when down at the beach here.
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Bell has a feature called free border zone for folks like me who often latch to a US tower. Somehow they know where you really are and if that's in Canada, roaming is free. But if you are physically in the USA, the bill skyrockets.
 
Susquatch said:
Bell has a feature called free border zone for folks like me who often latch to a US tower. Somehow they know where you really are and if that's in Canada, roaming is free. But if you are physically in the USA, the bill skyrockets.
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I need to find a person who knows how roaming works, and how cell phones attach to carriers

I don't pay for roaming but getting cell signal is increasingly annoying, not like how it used to be
 
Chicken lights said:
I need to find a person who knows how roaming works, and how cell phones attach to carriers

I don't pay for roaming but getting cell signal is increasingly annoying, not like how it used to be
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Once upon a time I knew all that. But it's all changed. My signal has gone to shit too despite a closer tower.
 
Susquatch said:
Bell has a feature called free border zone for folks like me who often latch to a US tower. Somehow they know where you really are and if that's in Canada, roaming is free. But if you are physically in the USA, the bill skyrockets.
Click to expand...
I was on Witty's Lagoon park this summer with friends. Pulled the phone out to check something and the next month got a one month roaming bill from FIDO because I had it switched on. It picked a US tower. In my opinion it should check the GPS when it decides to select a roaming tower to ensure the phone really isn't in the country.
 
Back to working on the Robot Arm. Turning the J1 spindle so the bearings have a sliding fit. It's not long enough to hold in a chuck so I decided to turn it between centres. But I didn't have a drive dog for a 52mm diameter piece. So I 3-D printed one out of PLA-CF (Carbon Fibre). Worked like a charm..

1764825846737.png

1764826012429.png

And yes there were about 42 different ways to hold the work and turn it to the sizes needed.
 
BaronJ said:
Hi Guys,
Over here they are killing 3G and rushing to introduce 5G. I'm on 4G internet and it sucks !
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5G has been in the larger cities in Canada for quite a while now. Even in the country I've been on 5G for a few years now. It sucks too. Sometimes I think 4G/LTE was actually better than 5G is now. At least it seemed to connect more reliably.
 
My older Samsung phone is still 4G/LTE but the change to Freedom has definitely impacted connection and texting photos for example. A phone call from my wife on the way home to the land line was terrible. I phoned her back from mine and crystal clear. We're both now on Freedom. Very strange.
 
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