Friday, February 23, 2018

5mm LED Holders

One of the things I find myself making often, is plastic (plexiglass) control panels. I still have not made my desktop cnc yet, but when I do, I can stop drilling these panels by hand. Mounting LED's is always a task, and I started using these very nice chrome LED holders. They come with a plastic plug for the 2 LED leads to stick through, and hold the LED securely. For my 4 lead RGB LED's, I just use a spot of hot glue to hold the LED, and heat shrink tubing to insulate the leads. Use a silicone coated wire for flexibility and stress relief.

http://amzn.to/2op7MGL




Tuesday, February 20, 2018

FreePBX - Open Source PBX Phone System

I just installed FreePBX, a linux based open source phone system at work (12 SIP trunks, 40 extensions), and thought, why not a home / small office unit based on a Raspberry Pi? The Raspberry Pi can easily handle multiple SIP trunks, and enough IP phones for the whole family / small business to have a extension or even a private DID. The FreePBX software is free, the Raspberry Pi is inexpensive (about $80 for a complete kit) and PolyCom IP Phones are readily available for around $80 each. Now you can have individual voicemail (email integrated), auto attendant, intercom, paging / bells, and music on hold just like the big boys. The phones and paging adapter can be powered by a inexpensive POE network switch, as can the Raspberry Pi with a POE Hat.

Arduino integration? Yes your Arduino can make outbound calls with prerecorded alerts!
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