Category: Electronics

DIY Bluetooth Speaker

I’ve wanted a Bluetooth speaker when working in the yard or around the house.  There are a lot of options to purchase one, JBL makes a great item, but it’s too much money for what I need.  Since bluetooth/amp boards…

DIY LED Task Lighting

I have a fluorescent light under the shelf on the workbench that provides some additional light to the two task lights I use, but it is not as bright or as efficient as I would like like.  A LED fixture…

Review: Magic Sound Box by Sunpak

Manufacturer: Sunpak Model: Magic Sound Box Web:  http://www.magicsoundbox.com/ Place of Purchase: Woot! Cost: $4.99 The reason this was purchased is simply for the gimmick of “sound induction technology”.  Of course the cheap price was also a motivating factor.  I have…

Blitzortung Kit Assembly

The Blitzortung lightning detection kit was purchased by my cousin for his home weather station, I assembled the kit and performed initial testing.  This project shows part of the assembly process, final assembly pictures and a couple videos of the initial…

20W Amplifier Project – Circuit Complete

Read the previous entries for this project: 20W Amplifier Project 20W Amplifier Project – Redo 20W Amplifier Project – Prep Work The remaining components finally arrived, the work can begin on the volume, tone and balance portion of the circuit. …

20W Amplifier Project – Prep Work

This is the continuatioin of the 20W Amplifier Project.  The previous two entries can be found here and here. With the main part of the 20W amplifier assembled and operational, it’s time to focus on control volume.  In the circuit…

20W Amplifier Project – Redo

The 20W amplifier project, as detailed in the last entry, was a partial success.  It was working, in that the sound was being amplified, but there was a tremendous amount of humming.  The other issue, which does not have anything…

20W Amplifier Project

After attempting, and failing, at building an audio amplifier for the garage, simpler design was in order.  After some research, amplifiers based on the TDA2003 IC seem quite common and rather easy to build.  This is the schematic used for…