MESMR -- a Modular Electronic System for Model Railroads
8
MESMR™ a Modular Electronic System for Model Railroads copyright ©2010 by Mark E. Schilke = ribbon cable from MC to MI = modular cable to layout socket switch track serial I/O output to motor motors blocks armature feedback Track Out system commands from DCC various track power turnout type & control polarity manual servo USB position motor m Main power District Controllers Turntable Controllers District Interfaces PIC16F887* Main Controller/Interface PIC18F4553* PIC16F887* PIC18F4685* 20AC → 24DC serial I/O 20AC → 24DC mains Transformer 20 volts A.C. 20AC → 24DC serial I/O inputs & outputs 20AC → 24DC serial I/O override • • • • • • • • • • • • • • • • • • • • • district configurations are customizable LEDs show turnout positions, block occupancy, devices devices commands validated & sent to DCs & TCs via serial commands executed, then confirmed to MC higher‐level computer: 12‐button keypad for entering commands magnets effects systemwide firmware updates are cached in RAM serial bootloader for firmware updates uncoupler lighting M C M I T C s D I s track detection signals D C s Program Track Out Command LCD shows system status, command queue, etc. • hard wired to layout 4‐conductor cable w/modular plug (telephone type) LED shows local status, command entry, etc. USB bootloader for firmware updates turntable bridge direction, track power, etc. MESMER™ Features Bus • D C C S y s t 2010‐12‐16 revision 01 * or equivalent system operation (?), etc. program development, computer optional throttles interface mains power layout misc. other animation devices misc. other misc. other block
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Transcript of MESMR -- a Modular Electronic System for Model Railroads
8/7/2019 MESMR -- a Modular Electronic System for Model Railroads
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MESMR™ a Modular Electronic System for Model Railroads copyright ©2010 by Mark E. Schilke
= ribbon cable from MC to MI
= modular
cable
to layout
socket
switch track
serial I/O
output to
motor
motors blocks armature feedbackTrack Out
system
commands
from DCC
various
track
power
turnout type &
control polarity
manual
servo
USB
positionmotor
mMain
power
District Controllers Turntable Controllers District Interfaces
PIC16F887*
Main Controller/Interface
PIC18F4553* PIC16F887* PIC18F4685*
20AC → 24DC serial I/O 20AC → 24DC
mains
Transformer
20 volts A.C.
20AC → 24DC serial I/O
inputs &
outputs
20AC → 24DC serial I/O
override
• • •
•
•
•• • •
• • • •
• •
•
• •
• • • district configurations are customizable
LEDs show
turnout
positions,
block
occupancy,
devices devices commands validated & sent to DCs & TCs via serial
commands executed, then confirmed to MC
higher‐
level
computer:
12‐button keypad for entering commands
magnets effects
systemwide firmware
updates
are
cached
in RAM
serial bootloader for firmware updates
uncoupler lighting
MC
MI
TCs
DIs
track
detection signals DCs
Program
Track Out Command
LCD shows system status, command queue, etc.
•
hard wired to layout
4‐conductor cable w/modular plug (telephone type)
LED shows local status, command entry, etc.
USB bootloader for firmware updates
turntable bridge direction, track power, etc.
MESMER™ Features
Bus
•
DCC Syst
2010‐12‐16
revision 01* or equivalent
system operation (?), etc.
program development,
computer
optional
throttles
interface
mains
power layout misc. other
animation devices
misc. other misc. other
block
8/7/2019 MESMR -- a Modular Electronic System for Model Railroads
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