Decoder Buddy - motherboard for 21 Pin decoders (Scale=HO) #NIX-DecoderBuddy
Decoder Buddy Information
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)
The mother board includes;
One 21 Pin Decoder receptacle,
Two pairs of track input pads,
One pair of motor input pads,
One pair of keep alive pads (U+ and GND),
Two pairs of speaker pads wired in parallel,
Resistors for use with LED lighting. (on board 2.2K)
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. Remember there are different incandescent lamp voltages 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 SIZE
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.
6 Reviews Hide Reviews Show Reviews
These motherbroads make putting a decorder in a loco so easy. Everyone should try one.
Very fine motherboard, makes putting a decorder in a locomotive so easy.
This motherboard solved all the issues with converting my engines to sound. The removable lighting board allows one to hook up lighting effects and simply plug them into the main board...after installing them.
Very good product, fits any loco. has many hookups.
I would recommend this product.
Pros (compared to ESU Direct)
1. Uses the higher rated 21 pin decoder.
2. Smaller foot print.
3. Add two addition powered functions A5,A6
4. The light function are on a detachable board.
5. Good Quality
1. A little taller that ESU direct which reduces clearance. A fix is to attach the board directly to top of the motor.
2. Does not resistor bypass solder pads like the ESU direct. You must wire across the resistor to eliminate them. Real pain.
Final note: I would have given them a 5 rating if the board had bypass resistors.
I purchased this item to use for installations that either don't have decoders or I am installing sound into. The removable plug allows for lights and other functions that are attached to the shell to be unplugged from the board when needing to work on the chassis.