Stand-Alone EDITS Pro
with controller addressing circuit
Published in issue 315, November 2002
Not every user of the EEDTS Pro system needs to control his model trains using a PC. This article describes how the system can be used stand-alone and what is required. We also present a deluxe address programming circuit for your manual controllers.Even shortly after the introduction of EEDTS Pro, it was evident that some users needed to be able to control the system without using a PC. One of the most frequently asked questions was whether the earlier EEDTS keypad could also be adapted to be used with the system and whether a keypad control would be coming. Another question that arose with regard to stand-alone operation of the controller was whether the ‘fixed’ addresses of the manual controllers could be changed without having to use a PC.
Resistors:
R1,R2 = 560Ω
R3,R4,R5 = 10kΩ
R6-R19 = 270Ω
R20 = 47kΩ
R21 = 8-way 47kΩ SIL array
R22 = 100kΩ
Capacitors:
C1,C2 = 10nF, lead pitch 5mm
C3 = 4µF7 16V radial
C4,C5 = 100nF, lead pitch 5mm
Semiconductors:
IC1,IC3 = 4029
IC2 = 4014
IC4,IC5 = 4543
IC6,IC7 = 4008
IC8 = 4093
IC9,IC10 = 4066
LD1,LD2 = HDN1105 or LTS4801E
Miscellaneous:
S1 = rotary encoder, upright model, Conrad Electronics # 705594
S2 = rotary switch, 1 pole, 8 positions
K3,K4 = 6-way SIL header*
K2 = 10-way boxheader*
PCB, order code 020125-1
* = mount at underside of board
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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