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Re: jmri & Arduino DCC-EX #dcc-ex

 

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Hi Trevor thanks for the reply , I have had some success

The whole idea was to repurpose some old tech to run my layout in the garden shed under dcc , I have an old iPad which is no longer supported by apple , a raspberry model 2b and an Arduino uno with motor shield?

It turns out that if I did a standard install of the latest dcc-ex command station which was part of the problem as it disables the program track and the Arduino then refuses to send signals to the track so this needed some custom settings which with the help of the discord channel they were able to solve that problem for me

My next problem is to get the project to be stand alone without any network as the shed is too far away so I have tried various raspberry pi installs and since my pi is underpowered by todays standerds this needed some more work

So currently I can connect my old iPad to the pi provided the pi is connected to the network but if it is not then the pi refuses to allow anything to connect and this is across all devices , both windows 7 ,8 and 10 , my iMac¡¯s and iPhone

Eventually I have settled on Steve Todds distribution and trying to get the home made system to work as I want it

Here is a pic of my current progress as I want the system to be headless with no keyboard or mouse and currently this project has cost only time as everything has been repurposed


If anyone can assist the the pi configuration in being stand alone with no network that is my last hurdle

A picture of the project

Rob
IMG_5071.jpeg


On 15 May 2025, at 02:04, Trevor Rowland via groups.io <trevor@...> wrote:

Rob,
?
Some questions that might help to solve the issue:
  1. When you say the track voltage on the main is 12v, do you mean you are feeding 12V to the motor shield, or you have measured 12V on the track?
  2. If you are feeding 12V to the motor shield, what type of motor shield are you using?? Some of them can drop a volt or so, so you end up with 11V or less on the track.? I believe some decoders don't respond well on the programming track if the voltage gets too low.
  3. In JMRI, have you verified the settings to ensure that the system is using the DCC-EX system for the programming track, like this?
    <inline.0.part>
  4. Are you definitely using the Programming Track output of the motor shield on your programming track?
  5. What version of DCC-EX are you running?
  6. Do you have an Android phone?? If so, have you tried programming commands from within the Engine Driver app to see if this is a JMRI or a DCC-EX issue?
  7. Can you DRIVE a loco via a JMRI throttle with the DCC-EX system?? If so, is that on the programming track or the Main track output?
Trevor.
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