Model Electronic Railway Group
The Leading Society for Model Railway Electronics
MERG DCC System - Downloads
Last updated 19th July 2023
This page is a resource area for projects members are working on or have completed and wished to make publicly available. Some of these projects have resulted in MERG kits but nothing on these pages should be taken as definitive information about the kits, members should check the kit pages for up to date information on the kits.
The files in the matrix below provide the information needed to construct the MERG dcc system. Where .zip files are provided the .zip includes all files for the item concerned. For more general information on MERG DCC visit the main DCC page
Current/recent MERG DCC system kits
Command Station (CANCMD) Kit 91
| Full Zip File: | Download |
| Component Layout: | Image |
Hand Controller (CANCAB) Kit 92
| Full Zip File: | Download |
| Component Layout: | Image |
New Booster (NB1B) Kit 59
| Full Zip File: | Download |
| Component Layout: | Image 17-Aug-07 |
Accessory decoders (ACC2) Kit 52, (ACC3) Kit 53.
| Full Zip File: | acc.zip | |
| Component Layout: | Kit 52 Image for solenoid motors. | Kit 53 Image for bipolar motors. |
Other MERG DCC Projects
Items listed here are projects that have not been produced as kits as well as earlier kits that have been replaced by the current kits above.
Click here for original MERG DCC system overview PDF
Combined Command Station, Booster and Power Supply (BC1A)
Was Kit 42 - now discontinued
| Full Zip File: | bc1a.zip |
Hand Controller - Mark 2
Was Kit 43
| Full Zip File: | hs2.zip |
| Parts List: | Parts list 24-Feb-03 |
| Schematic: | Schematic.pdf 8-Jan-03 |
| PCB Layout: | hs2bpcb.pdf hs2bcut.pdf 8-Jan-03 |
| Code: | hs2lbl1.pdf hs2blay.pdf 8-Jan-03 |
Accessory Encoder (ACE) was kit 51, now discontinued.
| Full Zip File: | ace2b.zip |
| Component Layout: | Image. |
New Booster - NB1A
| Description: | Description.pdf 12-Feb-09 |
| Schematic: | Schematic.pdf 11-May-10 |
| PCB Layout: | Layout.pdf 10-May-10 |
| Component Layout: | Picture.jpg 17-Aug-07 |
Original Command Station
| Full Zip File: | dcc8.zip |
| Parts List: | dcc81.pdf 28-Nov-99 |
| Schematic: | dccstn8d.pdf 8-Jul-99 |
| PCB Layout: | dcc8stnu.pdf 22-Nov-99 |
| Code: | dcc8g.asm dcc8g.hex 29-Feb-00 |
Booster (Boost5)
| Full Zip File: | booster.zip |
| Parts List: | booster.pdf 7-Jul-99 |
| Schematic: | boost5g.pdf 7-Jul-99 b5pwrstg.pdf 7-Jul-99 |
| PCB Layout: | b5pcb.pdf. 7-Jul-99 boost5.pcb |
Hand controller - Mark 1
| Full Zip File: | hsc.zip |
| Parts List: | dcc8hscl.pdf 20-Jan-00 hsparts.xls 10-May-01 hsparts.htm 10-May-01 |
| Schematic: | dcc8hsd.pdf 29-Jan-01 |
| PCB Layout: | dcc8hsg3.pdf 29-Jan-01 hsspcb.pdf 8-Jul-99 dcc8hsg6.pcb 8-Aug-02 |
| Component Layout: | hslbl.pdf hslblm3.pdf 20-Jan-00 hslblkn.gif 8-Aug-02 |
Accessory Encoder PC adapter board
Was MERG kit 54 (Discontinued)
| Parts List: | APC1_txt.pdf 18-Aug-08 |
| Schematic: | APC1_sch.pdf 10-Nov-05 |
| PCB Layout: | APC1_pcb.pdf 10-Nov-05 |
| Code: | Ace_PC1.asm Ace_PC1.hex 18-Aug-08 |
Auto reverse and cutout module (ARC)
| Full Zip File: | arc.zip |
| Parts List: | arc.pdf 26-Jan-02 arcparts.xls 31-Jan-02 |
| Schematic: | arc1sch.pdf 26-Jan-02 |
| PCB Layout: | arc1pcb.pdf 26-Jan-02 |
| Code: | arc1.asm 26-Jan-02 arc1.hex 26-Jan-02 |
Cutout module (BCO1)
| Full Zip File: | BCO1.zip |
| Description: | Description.pdf |
| Schematic: | Schematic.pdf |
| PCB Layout: | Circuit board.pdf |
| Code: | Hex file, ASM file |
Cut out and detection module (BDC1)
| Description: | Description.pdf |
| Schematic: | Schematic.pdf |
| PCB Layout: | Board.pdf |
| Component Layout: | Picture.jpg |
Block Occupancy Detector (BOD1)
| Description: | Description.pdf |
| Schematic: | Schematic.pdf |
| PCB Layout: | Board.pdf |
| Component Layout: | Picture.jpg |
Accessory decoder (ACC6)
Revised version for Fulgurex etc point motors
| Parts List: | ACC6_txt.pdf 04-Feb-07 |
| Schematic: | ACC6_sch.pdf 04-Feb-07 |
| PCB Layout: | ACC6_pcb.pdf 04-Feb-07 |
| Code: | Acc6_3.asm 23-Mar-07 Acc6_3.hex |
Programmer
MERG kit 41 (Discontinued)
| Full Zip File: | prog.zip |
| Operating instructions: | Operating instructions 7-Jan-07 |
| Parts List: | prognlb.pdf 15-Jul-99 progpa~1.pdf 12/12/02 |
| Schematic: | dccprog1.pdf 15-Jul-99 dccprog2.pdf 15-Jul-99 |
| PCB Layout: | progpcb.pdf 22-Jul-99 prog.pcb |
| Other: | Box label and cutting template 23-Jun-08 |
| Code: | for 16F84 (obsolete) progg1H.asm 07-Jan-07 progg1H.hexfor 16F628A (current) progg2K.asm 21-Sep-08 progg2K.hex |
MERG DCC Locomotive Decoders
Most of these were produced as kits for a few years but needed very good soldering skills and the reducing price of commercial decoders removed the cost advantage. The dec12/13 series do give very good performance
Loco Decoder
| Full Zip File: | dec10-11.zip |
| Parts List: | decoder2.pdf 26-Apr-00 make101.pdf 26-Apr-00 INTDEC10version103.pdf 3-Feb-01 software desription 27-Jan-04 |
| Schematic: | decod10b.pdf 3-Apr-00 |
| PCB Layout: | dec10bpc.pdf 7-Apr-00 |
| Component Layout: | dec10pc2.pdf 7-Apr-00 decod10 image 7-Apr-00 |
| Code: | decod10d.asm decod10d.hex 8-Feb-01 mbint105.asm mbint105.hex 27-Jan-04 16f628.asm 1-Apr-03 |
Small loco decoder
| Full Zip File: | dec10-11.zip |
| Parts List: | As loco decoder above |
| Schematic: | dec11sch.pdf 14-Jun-00 |
| PCB Layout: | dec11pcb.pdf 28-Apr-00 |
| Component Layout: | dec11pc2.pdf 20-Apr-00 decod11 image 20-Apr-00 |
| Code: | As loco decoder above |
Small loco decoder with feedback and stealth
| Full Zip File: | dec12-13.zip |
| Parts List: | dec131tx.pdf 9-May-02 dec131~1.pdf 10-Jan-03 |
| Schematic: | de12dsch.pdf 27-Apr-01 |
| PCB Layout: | de12dpcb.pdf 27-Apr-01 |
| Component Layout: | decod12 image 27-Apr-01 |
| Code: | dec133a.asm dec133a.hex 14-Mar-03 |
Loco decoder with feedback and stealth
| Full Zip File: | dec12-13.zip |
| Parts List: | As small loco decoder above |
| Schematic: | decod13.pdf 10-May-01 |
| PCB Layout: | dec13pcb.pdf 10-May-01 |
| Code: |
Flash unit
| Full Zip File: | flash.zip |
| Parts List: | flash.pdf 5-Feb-02 |
| Schematic: | flashsch.pdf 5-Feb-02 |
| PCB Layout: | flashpcb.pdf 5-Feb-02 |
| Component Layout: | |
| Code: | flash12a.asm 17-May-02 flash12a.hex |
Copyright
Copyright for items on this website is retained by the authors. Further licensing details are available on our copyright page.
The use or misuse for the sale, design, supply, process, installation, delivery, test, repair, servicing, and alteration of the designs, instructions, computer code, photographs, circuits, and any other information that appear on this web site is entirely at the risk of the user or visitor to the web site. The information is made available in good faith without warranty of any kind strictly on the basis that no liability will attach to the Model Electronic Railway Group (MERG), its officers and members.