Sprog Pi-SPROG 3 Manual de usuario

Pi-SPROG 3 User Guide 1

Pi-SPROG 3

DCC Decoder Programmer and Command Station

for Raspberry Pi

User Guide

Pi-SPROG 3 User Guide 2
Draft 0.6 July 2020 © Copyright 2020 SPROG DCC 
 
Revision History .............................................................................4
Introduction.....................................................................................5
Requirements...............................................................................5
Features........................................................................................5
Specification/Operating Conditions ..........................................6
Getting Started................................................................................7
Install the Operating System......................................................7
Connect the Pi-SPROG 3 to your Raspberry Pi........................7
Connect the Raspberry Pi Power Supply..................................8
Connect the Pi-SPROG 3 Power Supply ...................................8
Connect an Optional Track Activity LED ..................................8
Connect the Programming Track or Layout .............................9
Connecting an Additional Booster ............................................9
Accessing the Raspberry Pi Desktop........................................9
GPIO Pass-Through Connector ...............................................10
The SPROG DCC Generation 5 Interface ................................11
Getting Started with JMRI (DecoderPro and PanelPro)............11
Setting the Connection Preferences...........................................12
Introduction to Service Mode Programming with DecoderPro 12
Getting Started With PanelPro ....................................................20
Programming with PanelPro ....................................................21
Turnout Tables...........................................................................21
Power Control............................................................................23
Panels.........................................................................................23
JMRI Tools.....................................................................................23
JMRI Throttles............................................................................23
Connecting Throttle Devices to the Raspberry Pi Access 

Pi-SPROG 3 User Guide 3
Draft 0.6 July 2020 © Copyright 2020 SPROG DCC 
Point............................................................................................25
SPROG DCC Generation 5 Tools ................................................25
Console ......................................................................................25
The Node Manager ....................................................................25
The Command Station Monitor................................................28
Mode Switcher...........................................................................28
Track Current and Track Voltage.............................................29
Pi-SPROG 3 Firmware Updates................................................30
The JMRI System console........................................................32
Known Issues at time of writing..................................................33
Troubleshooting ...........................................................................33
Useful Links ..................................................................................33

Pi-SPROG 3 User Guide 4

Revision History

Date

Version

Firmware

JMRI

Comment

Apr-20

Draft 0.2

First customer release

Apr-20

Draft 0.3

1b1

4.19.5

Updated product photographs

May-20

Draft 0.4

1b2

4.19.6

Corrected link to JMRI Tools

Added detail for JMRI connection preferences

June-20

Draft 0.5

1b3

4.19.7

Mode switcher and other tools

July-20

Draft 0.6

1b5

4.19.9

Added NV 11

Firmware and JMRI columns refer to the earliest versions to which a User Guide version

applies.

Pi-SPROG 3 User Guide 5

Introduction

Pi-SPROG 3 is a DCC decoder programmer and command station for

connection to a raspberry Pi single board computer. Pi-SPROG 3 is

supported by DecoderPro and PanelPro, both part of the JMRI project

(http://jmri.sourceforge.net/).

Pi-SPROG 3 can supply up to 2.5A to the layout with a track voltage of 12 –

18 V recommended.

The additional booster connector is no longer supported on current hardware.

Pi-SPROG 3 is based on same hardware as the orginal Pi-SPROG One with

a completely re-written firmware. Pi-SPROG One owners should contact us

for instructions on how to upgrade their firmware.

Requirements

•Raspberry Pi

•R-Pi 3 model B+ or R-Pi 4 model B 2GB recommended

•Raspberry Pi power supply

•Operating system and software on SD card

•Regulated DC Power Supply for Pi-SPROG 3 (see Table 1)

Features

•Programs virtually all NMRA compliant DCC decoders

•No extra hardware required for programming sound decoders (e.g. QSI,

Soundtraxx)

•Easy to use graphical interface with DecoderPro

•Solder pads for optional track power activity LED

•Supports WiThrottle and EngineDriver Android apps, e.g.

•Pi 4 Model B using on-board WiFi

•Pi 3 Model B/B+ using on-board WiFi

•Pi 2 Model B with WiFi adapter

•Pi 2 Model B via wired network connection to wireless router

Pi-SPROG 3 User Guide 6

Specification/Operating Conditions

Parameter

Minimum

Nominal

Maximum

Units

Note

DC Input supply

voltage

10V

20V

Vin supply current –

not programming

Vin supply current –

programming

300

Vin supply current –

Operating Layout

2.6

Operating

Temperature Range

°C

Output Load –

programming

250

Output Load –

Operating Layout

2.5

Table 1Specification/Operating Conditions

Notes:

1. When programming, the minimum supply voltage depends upon the

requirements of the decoder being programmed. In general it is safer

to use as low a voltage as possible in case of problems with a newly

installed decoder.

2. Pi-SPROG 3 will remove track power if output current exceeds 250mA

as measured 100ms after applying power. Surge current during

decoder power-up may be considerably greater than this, but is

allowed for.

3. Depends upon required DCC current.

4. Pi-SPROG 3 is protected against reverse polarity connection of the

power supply but will not work unless the polarity is correct.

Pi-SPROG 3 is not protected against track and power connections

being interchanged, and damage may result.

Pi-SPROG 3 User Guide 7

Getting Started

The following steps are required to install Pi-SPROG 3 before you can use it

for the first time:

Install the Operating System

Create an SD card image of the Raspberry Pi operating system and required

software for your chosen application. Instructions for this are available from

the SPROG DCC website download page:

SPROG DCC download page

You can follow the instructions to create your image, or purchase a pre-

configured SD card from SPROG DCC.

It is strongly recommended that you make a backup of your SD card, using a

tool such as win32diskimager

Connect the Pi-SPROG 3 to your Raspberry Pi

Always shutdown the Raspberry Pi and remove the power connection before

connecting or disconnecting the Pi-SPROG 3.

The Pi-SPROG 3 should be plugged onto the 40 pin GPIO header, being

careful to align the pins correctly. Using the plastic standoffs supplied with the

Pi-SPROG 3 will ensure the correct alignment.

If you wish to remove the Pi-SPROG 3, do so carefully to avoid bending the

connector pins on the Raspberry Pi.

Pi-SPROG 3 User Guide 8

Connect the Raspberry Pi Power Supply

Use a suitable power supply appropriate for your Raspberry Pi and any

peripherals that may be attached and powered from the USB ports.

Connect the Pi-SPROG 3 Power Supply

Power supplies packaged with a Pi-SPROG 3 are already connected to the

green pluggable terminal block.

For any other supply used (which must be a regulated DC power supply),

connect as described below.

•Cut off the low voltage DC plug

•Separate the two conductors for about 3cm

•Strip 6-8mm of insulation from each conductor and twist the copper

cores of each conductor together

•Insert the positive conductor into the +V terminal of the connector

block and tighten the screw

•Insert the other conductor in the 0V terminal and tighten the screw

Pi-SPROG 3 is protected against reverse polarity connection of the power

supply but will not work unless the polarity is correct.

Connect an Optional Track Activity LED

You may connect an optional track activity LED (requires soldering) to the two

Power

Connection

Track

Connection

Track

Activity LED

Connection

Pi-SPROG 3 User Guide 9

holes shown in the annotated picture. A current limit resistor is included on

the PCB suitable for a standard red LED. The LED anode should be

connected to the square pad.

The LED will illuminate steadily when the DCC power is connected.

The LED will flash slowly hen the track power is turned on, quickly when an

overload is detected.

The LED is not provided by default as we felt some users may wish to mount

their Pi-SPROG 3 in an inaccessible location and mount a remote LED on a

front panel.

Connect the Programming Track or Layout

When using Pi-SPROG 3 as a programmer, the programming track

MUST be isolated from all other DC or DCC control systems and

connected only to the Pi-SPROG 3. Damage may result to the Pi-

SPROG 3 or other equipment if this rule is not followed.

Connect the Pi-SPROG 3 to the programming track using the Trk A and Trk B

terminals of the pluggable terminal block. There is no requirement to observe

any particular polarity when connecting the programming track. The DCC

output voltage will be approximately 1V below the power supply voltage,

typically about 11V with the standard power supply provided..

During programming the track current is sensed 100 milliseconds after the

programming track is powered up. If the current exceeds 250 milliAmps then

the programming track power is removed to avoid potential damage to an

incorrectly installed decoder.

Connecting an Additional Booster

The low power booster connection is not currently available. Some boosters

can, however, be connected directly to the track output.

Accessing the Raspberry Pi Desktop

We recommend using remote access software from a host PC or other

suitable device. SPROG DCC software images are pre-configured to disable

the default desktop and run VNC server.

We recommend VNC viewer, or similar, on your PC. The server name for a

SPROG DCC SD card is sprog-pi3 (pre 2020-02-13 SD card) or sprog-pi4

(2020-02-13 SD card or later). If you created your own SD card then use

Pi-SPROG 3 User Guide 10

hostname that you chose in the Raspberry Pi configuration.

If the server name is not resolved you will need to determine the IP address

of the Raspberry Pi that is assigned by your router and connect to that IP

address in VNC viewer.

The default vnc username and password for SPROG DCC software images

are ‘pi’ and ‘raspberry’, respectively

For wireless connection you must first connect to the access point using the

wireless setup on your PC, just as you would to connect to a wireless router.

The default IP address to connect to the SPROG DCC images is 192.168.6.1

If you prefer not to use remote access you can attach an LCD screen or

HDMI monitor, along with a USB keyboard and mouse. You can log in to the

Raspberry Pi and then start the desktop by running ‘startx’.

You can run ‘raspi-config’ to enable the desktop automatically at login.

Using a screen directly attached to the Raspberry Pi will display the

default desktop :0 and you may not see the DecoderPro GUI that

may have launched on desktop :1 when the Raspberry Pi booted,

depending on the system configuration.

You may need to do further configuration to force DecoderPro to start on the

default desktop.

GPIO Pass-Through Connector

The Pi-SPROG 3 passes all Raspberry Pi GPIO pins through to a 40-pin

header that allows further accessory boards (“hats”) to be connected. There

are, however, some restrictions on using these pins.

The UART Rx and Tx pins (pins 8 and 10) are used by the Pi-SPROG 3. No

further connection should be made to these pins.

The SPI pins (pins 19, 21, 23 and 24) are connected on the Pi-SPROG 3 and

reserved for possible future use. In the meantime, with the current firmware,

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