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SINGLE TRANSISTOR CONTROLLER PROJECT

Everyone wants a controller which will make them competitive! The downside of this is that commercially available top range controllers are expensive because you have to pay for the labour and overhead of the manufacturer.

This controller will give you a unit which will run almost any slotcar on any type of track.

With a few simple tools - Soldering Iron, Dremmel, Drill and screwdriver + a bit of basic soldering and fitting skill and around 3-5 hours of your time, this project will give you a controller which will compete with the best!

Many thanks go to Paul Bucknell and Chris Frost for sorting the original concept.

You will find 2 dowloads on this page.
1) a 5 meg Word document - which takes a while to download but tells you how to do it!
2) a 1 page PDF of this page so you can view the component packs in hard copy.

You can make this controller using a standard 25 or 35 ohm controller resistor. Not only does this help out in terms of cost, but is harder wearing than a circuit board type wiper board and as it is “wire wound”, makes the controller very smooth and almost stepless in operation.

You will also find options for traditional resistor adjustable brakes or a diode braking system, which is lower cost and also gives the option of “roll on braking”.
Other options include LED indicators for “Power On” and “Blast Relay” functions + a switch to enable / disable the Blast Relay.

In the instructions you will find a price and locator guide for components, however for your convenience (especially for overseas racers who may have problems finding parts), AB have packaged the following component packs for your convenience. These are usually available ex stock from AB.
So waste no more time! Click the download buttons, print, and start building your Winning Hand Controller!

NEW, IMPROVED WIRING DIAGRAM DOWNLOAD Gif files

For you convenience;-
Component packages from AB

Pack 1
MJ14003 Transistor, 40mm fan, Fan Guard, 4 x 3mm fan bolts, 4 x nylon fan bolt spacers
£24.00

Pack 2 - Wiring kit
1 mtr high quality 6 core cable (controller handle to box)
3 x 0.3m colour coded silicon heavy duty cables (box to track)
2 x Long cable grommets (for handle and box)
1 x Bulhead fitting (for box)
3 x stackable fuse holders
2 x 35a fuses
1 x 10a fuse
1 x shrink wrap 4mm x 0.3 mtr
1 x shrink wrap 15mm x 0.1mtr
4 x cable ties
£14.50

Pack 3 - Control pack
2 x 10R potentiometer (cermat type)
2 x Control knob
1 x switch (Blast relay)
£14.00

Pack 4 - diode brake kit
1 x rotary switch
8 x diodes
1 x Control knob
£4.50

Pack 5
Hammond box complete with adhesive rubber feet
£8.50

Pack 7
2 x 12volt red 3mm led’s (CJ66W)
£0.60

Pack 8
Red Fox 25 ohm resistor
£6.50

Pack 6
40 asm Automotive Blast Relay £4.50