All circuits are GO!

As a short follow-up on the giant clock that has been lying dormant for some time now, a video of the start-up pattern and initial settings of the clock is now available. When the clock is started, the digit controllers run through all the numbers and finally they start listening …

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Controller code

This is the code running on the segment driver controller boards: Main.c

and Main.h (This is not the right way to do it)

 

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Controlling topology

The nature of the project makes several controlling choices ‘the obvious choice’. The clock only needs 28 outputs for segments and 1 for the ‘dots’ in the middle of the clock (the option to turn them on and off is nice to have). finding a microcontroller with 29 outputs is …

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Making displays

This post will deal with the construction of the display segments. Not the individual strands of LEDs – they are done already. Instead the post will be about the casing that the segments will have. I started out by testing the Ledberg lamps (see previous post). Since it worked so …

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Initial testing

Now for some practical stuff. I have created a simple breadboard solution for the driver circuit and hooked 7 Ledberg lamps up to NMOS transistors. The breadboard is quite a mess! whats in there is: on top a PIC16F688 MCU. below that is a 7805 linear regulator for supply. The …

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