RGB Luxeon Star Mood Light

The Luxeon Star RGB Mood Lamp requires a 9V DC power supply with at least 1500mA. The connection to the lamp is a 2.1mm DC jack which should be centre positive. The jack should be inserted into the lamp and the lamp assembled before plugging the power supply into the mains socket. The light can […]

LED Colour Organ

I’ve always been interested in sound-to-light conversion since both playing music and electronics are both hobbies of mine, so I decided it would be great to build a ‘colour organ’ of some sort. Much surfing and googling later revealed that there didn’t seem to be any pre-existing designs available on the web that suited my […]

16×8 LED Matrix Display

The 16×8 LED Matrix clock was a project I built for my office. I wanted to have a clock for my desk which was a little unusual. I decided to build a 16×8 red LED matrix display and then interface this with a PIC18F2550 based circuit including a real-time clock and a temperature sensor. The […]

Simon18F

Simon18F is a project to replace the custom MB4850 processor of the MB Electronics Simon game with a PIC18F2550; initially to emulate the original Simon games and, later, to enhance the existing games and add new ones. For a video of this project including commentary please see the following: Hardware The Simon18F processor board is […]

Reverse Engineering an MB Electronic Simon Game

The MB Electronics Pocket Simon game has a very simple circuit thanks to the inclusion of a custom MB Electronics processor (the MB4850) which performs nearly all of the functions for the game. The only other significant piece of electronics is a SN75494N chip which interfaces the processor to the light‐bulbs and the built in […]

Restoring an Acorn A3000 computer

Released in 1989, the Acorn BBC A3000 computer was the last of the BBC branded machines Acorn produced and as a ‘cheaper’ all-in-one unit and was the machine most Acorn loving Brits had for games, programming and a whole host of other applications in the early 1990s. At the time of writing (March 2009) there […]

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