This product is versatile in terms of direction of the placement of the board and mounting in various configurations. It can easily replace a QSI board, a Dual Mode decoder board or be mounted directly on the electric motor or frame with Kapton tape. (It is recommended that a piece of Kapton tape be placed on the bottom of the mother board to assure electrical isolation from the electric motor or frame.)
This mother board does not include the 21 Pin Decoder.
This mother board and connector board require soldering.
These printed circuit boards are NOT FOR USE IN A DC SYSTEM.
The on board resistors are sized for LEDs. (2.2K)
Now I have added Decoder Buddys with 0 ohm, 750 ohm and custom specified resistors for function outputs. These may be requested by the email link.
The mother board includes;
One 21 Pin Decoder receptacle,
Two pairs of track input pads,
One pair of motor input pads,
One pair of stay alive pads (U+ and GND),
Two pairs of speaker pads wired in parallel,
Resistors for use with LED lighting. (on board 2.2K) (Also available with 0 ohm, 750 ohm and custom specified resistors for function outputs. this accommodates incandescent lamps or bulbs.)
The connector board contains pads for eight pairs of lighting function connections. U+ or the blue wire has eight connected pads for the common power source. The negative (-) discrete function pads are all labeled to indicate their connection to the functions available in the decoder.
If you require incandescent lamps there are procedures that require soldering and allow for incandescent lamp use or different Decoder Buddys made specifically the application. Remember there are different incandescent lamp voltages and current draw that have to be taken into consideration also.
The lighting connector was designed so that the shell of the diesel locomotive can be easily separated from the frame without unsoldering wires. This does require that the headlight and rear lights be mounted in the shell of the locomotive and that the diesel has a removable dynamic brake shell.
Decoder Buddy installed, speakers installed, decoder installed, and the motor is tested and ready.
Width x Length x Height
O.67” x 2.20” x 0.35”
17 mm x 56 mm x 9 mm
Height may vary slightly
depending on decoder.
Before and after in two of Jim Moe's Proto1000 RSC2s
Pin # Decoder Digitrax LokSound SoundTraxx TCS
Buddy V4 T2 & E2
3 A6 A6 A6 F6*
4 A4 A4 A4 Fx6 F4
7 F0r F0r F0r. F0r F0r
8 F0f F0f F0f F0f F0f
13 A3 A3 A3 Fx5 F3
14 A2 A2 A2 Fx4 F2
15 A1. A1 A1 Fx3 F1
17 A5 A5 A5 F5*
* Note: TCS functions 5 and 6 are not programmable, and will only output constant bright lights.
An added benefit of Decoder Buddy beyond easy DCC decoder installation is YOU CHOOSE lighting functions. Upgrade the motherboard that came with your locomotive for all the lighting functions available in your 21 pin decoder! Ditch lights, blinking ditch lights, numberboard lights, step lights, ground lights, class lights, the list goes on.
NS, CSX and RAILROADS THAT BOUGHT THEIR "PREVIOUSLY OWNED" LOCOMOTIVES
EIGHT LIGHTING FUNCTIONS IF AVAILABLE ON THE 21-PIN DECODER