Tag Archives: geoff king

Ernie The Electronic Organist – Part 3 (Generating The Data)

Posted on Sunday, 22nd Nov 2009 by Caz

Data Format Following on from the previous post, we now move on to Data Formats and Data Generation. The system can play music in up to 8-part harmony, equivalent to 8 separate parts or voices in a choir, and keeps … Continue reading →

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Ernie The Electronic Organist – Part 2 (Machine Control)

Posted on Saturday, 21st Nov 2009 by Caz

Following on from Part 1, the next stage is to explain how the BBC Micro actually interfaces with the organ to control the notes. The Switching Circuit in Parallel [Right: Transistor Switching for each Note – click image for bigger … Continue reading →

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Ernie The Electronic Organist – Part 1 (Intro)

Posted on Friday, 20th Nov 2009 by Caz

It’s been ages since I did a semi-tech talk at a BarCamp, since I usually talk about photography. But recently I’d been picking my Dad’s brains on his hardware hack which makes an old BBC Model B Micro play a … Continue reading →

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