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Help wanted Can anyone help identify a piece of music from the 70's? See the home page for the details

November 2021 A desk lamp mod (well, more of a bodge) - halogen to LED conversion using LED strip. Find it under the 'Misc' category.

August 2021 The Simple DDS VFO has been updated to add band change functionality. It is on it's own page in the homebrew menu.

June 2021 Battery Monitor project updated and finalised.

May 2021 Added another Rant about the scabby manuals that come with stuff these days. Added page and files for a 3d printed box for the Noise Canceller courtesy of Gary VK6GS

January 2021 Paypal button added to Noise Canceller page. Updated the PK3 programming adapter - some spare pcb's available.

Privacy Policy uploaded. It may be viewed at the Privacy Policy link in the footer. As of October 2017, I will be asking for a donation in exchange for providing custom modified code for my projects to help keep this site available. GPDR and all that stuff In accordance with various bits of legislation around the world, either currently in force, about to come into force or proposed, you will now find that annoying "We use cookies" notice at the top of this website. The full Privacy Policy is available at the Privacy Policy link in the footer at the bottom of the page. (If you don't know what GPDR is, Google it. Real scary shit for ANYBODY with a web presence.)

Model Railway Electronic Project - Random Flasher - Under construction - Dec 2017

All the Model Railway Electronic Project web pages are a work in progress at the moment, so they may ramble a bit or be a bit disorganised while I refine the various pages. Most of these projects were done quite some years ago without much documentation, so I'm in the process of documenting them, which may take a little while. In the mean time, what I have is being put up here. Back in the mists of time, emergency vehicles only had one rotating light on the roof. If you stood and watched them long enough, they would slowly change from a few randomly flashing lights to flashing in unison and slowly drifting off back to a collection of random flashing lights. That was the basis for this project. Of course, you don't have to use it for emergency vehicles, it could be used anywhere a few flashing lights are needed. You only need to change the colour of the LED's used to suit the scenario.

Random flashing lights schematic

(Click picture for larger view. Click again to close.)

I have designed a 'Universal' pcb that can be used for several different projects (that is why the 'Not fitted' references in the schematic above), but have not yet made one to make sure there are no problems with it. In the meantime, below is a preview of the pcb.

Universal Model Railway project pcb

To do: Expand this webpage with more info. Make a small diorama and video it to show how it operates. More as I think of it.

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