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Stand-Alone EDITS Pro

with controller addressing circuit

Stand-Alone EDITS Pro
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.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

R1,R2 = 560?
R3,R4,R5 = 10k?
R6-R19 = 270?
R20 = 47k?
R21 = 8-way 47k? SIL array
R22 = 100k?
C1,C2 = 10nF, lead pitch 5mm
C3 = 4µF7 16V radial
C4,C5 = 100nF, lead pitch 5mm
IC1,IC3 = 4029
IC2 = 4014
IC4,IC5 = 4543
IC6,IC7 = 4008
IC8 = 4093
IC9,IC10 = 4066
LD1,LD2 = HDN1105 or LTS4801E
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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