Welcome to Circuits4Tracks
Where you choose your work versus price comfort zone!



Archived Documentation

Documentation for older (discontinued) versions of products now appears at the bottom of the product's documentation page. For the Quad Occupancy Detector, this means that everything is on one page, instead of three separate pages.


Signal Animator Available Again

We now have the Signal Animator (SGA) available for ordering, with new lower prices. See our SGA Product Page for pricing details.

On a related note, a recent resignalling project resulted in creating a test jig used to test the operation of signals before connecting them to an SGA. An article on the Test Jig has been added to our Tips & Tricks page, and will be updated soon to include a download of the circuit diagram, parts list, and software source code. SGA Product Page.


Ontario Made's Searchable Consumer Database is Now Live!

Circuits4Tracks has products on the Ontario Made website. There are also many other products and manufacturers on the Ontario Made site, and we encourage you to visit the website and discover Ontario-made products and where they can be purchased.


Interested in Expirementing with Occupancy Detection?

While our Quad Occupancy Detector is one of the lowest-cost way to detect occupancy, we have a limited-time special for those wishing to experiment with even less initial cost, and do so without first having to assemble a kit.

We have a limited supply of fully functional "Version 2" QODs available for the low cost of $1 per detector (that's $1 for a single, $2 for double, $3 for triple, and $4 for a fully-populated QOD) plus shipping. Version 2 was the second generation of our detector that pre-dates when we initially started selling the Version 3. These were used on our own layout beginning in 2009 until a recent re-wiring project involved using DIN rail board carriers that the older detector boards do not fit (Version 2 boards are 3" square, while current boards are 2.75" square).

These detectors have the same specifications as our Version 3 QOD. Like the Version 3, these only have a 1x6 header for the outputs, though some are straight and some are right-angle (like the one in the photo to the right). Also like the Version 3, they have a 3 amp maximum block current.

We will have a full count of available units shortly, but in the meantime you can send us an email for details on what is available and how to order them. Regular shipping rates apply, but free drop-off is available in parts of the GTA.

NOTE: These detectors are not ROHS compliant.


COVID-19 Issues:

We are pleased to say that it is business as usual for us in these unusual times. One of the benefits of being a cottage industry is that shelter-in-place provides more time. We have a good inventory of components, so if our site does not indicate there are units or kits that are ready-to-ship, these can be shipped within one day in most cases.

Our Signal Animator is the only product that is temporarily unavailable as we have run out of circuit boards.

Please note, shipping may be a little slower than usual due to limitations of the postal system under current conditions. For customers outside of Canada, it is likely that your country's customs clearing will be slower than usual as well. Several orders we have shipped spent the most time being cleared on entry to the destination country. If your order uses tracked shipping, you will be able to keep track of where it is at while it is on its way.

We continue to develop the new signalling system and hope to have some updated information on its evolution on this site soon.

Stay safe, and keep on railroading!


Bulk Packaging of Kits

When placing an order with more than two of the same kit, bulk packaging will be used. This means that instead of separately packaged kits, the ordered quantity of each component will be packaged together. One or two separate components needed for all kits will be in a plastic bag or IC tube with a label or labels applied to indicate what component is included. One hardcopy of the assembly and installation instructions will be included with the order.


Evolution of a Signalling System

Our article on the evolution of a Signalling System has been updated to outline the latest developments.

This article describes a currently working system that is not practical to market in its current design. The article describes its features and outlines the shortfalls that make is unmarketable. Then it outlines current plans to redevelop the system so that it can be sold as a product along with other items we offer.

If you are interested in signalling for your model railroad, or just curious, we encourage you to take a look at this article. There is an email link at the bottom for any questions or feedback.




We have added accessory items to our products page. This will include items for use with our products such as IC sockets, header plugs, spacers, and jumpers.


Traverser Power Supplies:

We now have a power supply suitable for the Traverser. It is a "wall wart" type power supply that provides 12 VAC at up to 750 mA, from a 120 VAC outlet (Canada and USA). The price is $8.99 on its own, but will only add $7 to a Traverser/QOD combo. See The Traverser product page for details.



Niagara Frontier Region Convention
We expect to be doing a clinic on Signalling and Block Detection.
However, this event has been postponed until an undetermined date.
Please check back to see this information as it is updated.