Model Railroad DC Track Detection Boards - Built and Un-Built - 92 Blocks

Description

If you love to build your own Electronic projects this ones for you. Up for Sale, DC-OD, RevJ Optimized Track Detectors for N, HO, S and O Scale Model Railroads, Diodes included for HO. Here is the scoop. These were originally intended for my dream layout and of course DC was the predominate way to power the layout at that time. My new layout, will include detection for signalling and future CC but I have moved to DC which requires a very different Optimized Detector. DC or DCC detectors range in price from .00 to .00 per block depending on U-build or Built. Most likely this listing will of interest to someone with a large home layout or club layout still using DC. Note...Designed for standard DC NOT DCC powered layouts.
I purchased 23 PC boards, each hosting 4 circuits (blocks) for a total of 92 detection blocks along with 2 power supply kits and ALL necessary parts to complete All the boards and a few extra parts for spares. Also included, the complete instructions, diagrams and parts list for RevJ and instructions from Dr. Bruce Chubb for updating to RevK if desired. That is what you see here. As stated, All necessary IC's, Pots, resistors, diodes, capacitors, LED's, Instructions, etc. are included. Only optional items needed would be the IC sockets and maybe the 44 pin edge connectors, if you would prefer not to solder the IC's or wires to the connection pads.
Here is the board completion breakdown:
1 - Board, 4 Blocks of Completely Assembled Detection Boards, Diodes mounted on Board
8 - Boards, 32 Blocks of Completely Assembled Detection Boards (Diodes included but not installed, these should be off board mounted)
2 - Boards, 8 Blocks that just need the Pots installed (Included in parts)
12 - Bare Boards ready for assembly (All parts Included)
2 - 15V -+ Assembled boards with transformers
As for pricing, my loss your gain. So...At and average of per block this quantity would cost around 00 for built. Un-Built kits would cost about per block for the board and about to for parts or > per block. So...I have priced the entire lot for 0 for everything you see including the power supplies. I believe that would be about per block. I had thought to list the build boards and unbuilt boards separately but that would mean a lot of time and effort sorting and bagging parts for each of the un-assembled boards, not something I would prefer to spend my time doing. I may break this listing down at a later time if it does not sell as a lot. Please feel free to ask questions and thanks for looking.
I will be "Cleaning the Closet" and thinning a huge stock of kits, cars, engines, Decals and other Model Railroad items so be sure to keep checking for other future auctions I will be listing here on Ebay, Thanks for Looking and email with any questions.