Tag: Diy

Linux alarm clock - Display

Posted on May 26, 2015  - Last updated on May 26, 2015
By Benoit Frigon

Linux alarm clock - Display

This is the display i made for my alarm clock project. The first version was a 24x7 LED matrix but later changed the design for a four digits seven segment display. I decided to keep the drawings for the LED matrix and named it model A and Model B for the segment display.

The display is encapsulated in clear casting epoxy and is 5 inches wide by 2 ¼ inches high by 1 inch thick.

I was new to silicon molds and casting epoxy, so there was definitely a learning curve. I was unable to avoid the micro bubbles problem entirely. There are a few, but I can live with it, it’s not that bad. The assembly of each digits PCB, making the segments diffuser, gluing them, etc. takes a very long time. I did not want to start all over because of a few bubbles.

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DIY electronic workbench

Posted on Oct 30, 2014  - Last updated on Apr 14, 2015
By Benoit Frigon

DIY electronic workbench

My previous electronic workbench was an old melamine office desk. It was not high enough to work comfortably on PCB assembly. I usually hand-solder small SMT components (0603, TSSOP, etc.) and I always ended up placing my PCBs on top of a box so I could see better what I was doing.

I looked online for a pre-built workbench, but I couldn’t find what I was looking for. Either it was too expensive or I didn’t like the design. I decided to build my own instead.

To be honest, woodworking isn’t one of my strongest skills, but in the end, I was quite satisfied with the results.

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LED strip lighting for my a/v rack cabinet

Posted on Oct 23, 2013  - Last updated on Dec 07, 2013
By Benoit Frigon

LED strip lighting for my a/v rack cabinet

I installed a LED strip in my a/v rack to make it easier to see when I’m working on it. My plan was to buy white LEDs but it turned out to be cheaper to get RGB strips of the length I needed where I bought them. The kit comes with a controller and a remote control which allows you to set the intensity and change colors.

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Linux alarm clock

Posted on Oct 07, 2013  - Last updated on May 26, 2015
By Benoit Frigon

Linux alarm clock

I’ve been working on this project for some time now. This is my alarm clock running Linux.

These are the feature I wanted:

  • NTP time synchronization
  • Touch keypad
  • Transparent seven-segment display
  • Web interface to configure the clock, upload alarm sound, etc.
  • Battery backup

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Custom 19 inch rack cabinet

Posted on Aug 12, 2013  - Last updated on Dec 07, 2013
By Benoit Frigon

Custom 19 inch rack cabinet

This is the rack cabinet i made for my a/v and network equipment. The cabinet is 75.5"H x 20.5"W x 19"D and consist of 3 sections, the 2 upper sections are 19-1/8" wide rack mount space and the lower section is a 16" height compartment to store my UPS. There are 18 units of rack space in the middle section and 12 units in the upper section.

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Analog Audio/Video Routing Switcher

Posted on Jun 24, 2013  - Last updated on Feb 23, 2014
By Benoit Frigon

Analog Audio/Video Routing Switcher

This is an old project! I made it 10 years ago. My DIY skills improved quite a bit since then…

It’s an audio/video (composite) routing switcher, i used it to switch between video sources on my tv. The tv I had back then only had 1 video input. It consist of a 8×8 video crosspoint (MAX4456) and a 16×16 analog crosspoint (AD8113) controlled by a small microcontroller (PIC18F452). It allowed me to distribute an audio/video signal from 5 different sources to 5 outputs by selecting it on the panel. I could split the audio from one input channel and take the video from another one if I wanted. It has 8 presets I can program to quickly recall channels assignation. It’s still working and I still use it today, but now, it’s used for routing audio only.

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