News, Updates and Other Minutiae
August 2025 UR5WHK has created another version of the AD9833 project with a 128 X 32 OLED display. You can find it under the Gallery menu - it is on the same page as the MAX7219 version.
July 2025 UR5WHK has created an updated version of the AD9833 project which now includes a MAX7219 based LED display. Code updated 10 July 2025. Code updated again 15 July 2025. You can find it under the Gallery menu.
March 2025 In something of a "Seniors Moment", I forgot to update the homebrew menu and this section relating to a project I did late 2024. That project is an update of one from the RSGB Radcom magazine of Sept 1999 - 'Turn Your Dip Meter into a Signal Generator'. Presented here as 'Grid Dip Meter (GDO) Add on' under the Homebrew menu.
November 2024 Phillipe F6ETI has done some serious testing on the Noise Canceller and shown it works up to 72MHz and is usable with some loss at 145MHz. Links to his website with photo's, video's and description of the testing on the Noise Canceller page.
Privacy Policy uploaded. 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 - Camp Fire simulator - 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. This is a little circuit that can be used to simulate a campfire or any other type of simulated fire. It uses red, yellow and orange LEDS, which, along with the adjustment pot on the pcb, can simulate anything from the glowing embers of a fire to a roaring camp fire by changing the rate of flicker.
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.
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.
