Boards o' Magick - Blackthorne TA

Clock/Calendar Project: Completed

Posted Sat, 9th Mar '13 at 6:48pm by Blackthorne TA

For the enclosure I used the same fiber board you saw in the previous pictures where the clock PCB was mounted. I didn't use any CAD software to design the parts; I just freehanded drawings and made some measurements on the final article to get dimensions that would fit. Then I used a hot glue gun to glue the fiber board parts together.

For the face, I cut a piece of 8"x10" 3/32" thick glass down to a size that would slip in front of the clock face PCB and the fiber...

Blackthorne TA

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Posted in Radio Controlled LED Display Clock and Calendar Project

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Clock/Calendar Project: Component Population

Posted Sun, 3rd Mar '13 at 11:56pm by Blackthorne TA
Updated Mon, 4th Mar '13 at 4:08am by Blackthorne TA

Here are a few pictures of the PCBs (the main clock and the clock face) populated with the components prior to assembling the whole thing into an enclosure.

Here's a picture of the main clock PCB from what is the bottom. The receptacle in the upper right is for the 5 volt power connector. The two connectors on the bottom are where the clock face will connect.

The red wires aren't technically needed, but one was a mistake (forgot I had put a via underneath the through-hole...

Blackthorne TA

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Master in his Own Mind

Posted in Radio Controlled LED Display Clock and Calendar Project

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Clock/Calendar Project: The PCB Fabrication

Posted Sat, 23rd Feb '13 at 6:14pm by Blackthorne TA

Now that the designs were complete, it was time to fabricate it, starting with etching the PCB designs onto real copper-clad PCB boards.

As last time I used the PCB Fab in a Box toner transfer method.

The first step is to print the PCB designs using a laser printer onto special paper that has a water-soluble coating. Then use a laminator to fuse the exposed toner to the copper-clad board and dunk it into water to release the original paper, leaving just the toner image...

Blackthorne TA

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Master in his Own Mind

Posted in Radio Controlled LED Display Clock and Calendar Project

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Clock/Calendar Project: The PCB Design

Posted Sun, 17th Feb '13 at 9:54pm by Blackthorne TA

Once the circuit design is complete as seen in the last blog entry, the designs for the Printed Circuit Boards needs to be done. As before I used DipTrace to transform the schematics (also done in DipTrace) into PCB traces.

Again I was limited to two-sided PCBs since I wanted to make the boards myself. In fact, I wanted to use a single-sided board for the clock face since I had more unused single-sided available, but could not accomplish that (too many line crossing everywhere)....

Blackthorne TA

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Master in his Own Mind

Posted in Radio Controlled LED Display Clock and Calendar Project

Views 182 Comments 3 Blackthorne TA is offline

Clock/Calendar Project: The Schematics

Posted Sun, 10th Feb '13 at 2:03am by Blackthorne TA
Updated Sun, 10th Feb '13 at 4:19am by Blackthorne TA

The schematics for this project are much simpler than the USB DSO since there are really only three main components then a bunch of LEDs and a few connectors.

Here is the main schematic that includes everything but the clock face LEDs:

Click here to view or download the file directly.

The brains are in the SoC labelled U3 which is the Cypress CY7C63823-SXC. It connects to the majority of the rest of the design since it is what is doing all of the controlling...

Blackthorne TA

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Master in his Own Mind

Posted in Radio Controlled LED Display Clock and Calendar Project

Views 974 Comments 2 Blackthorne TA is offline

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