Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Speaker Switcher Controlled Via Web Interface

Peter has sent his newest arduino project that we might find really practical. Probably many of us find ourself in situation when wee need to switch between speakers and headphones while sitting by computer. This leads to messing around tons of wires behind table. So here is a better solution and probably more fun – Arduino based audio switch. He used several components and built simple prototype board that can be connected to Arduino with Ethernet Shield. By sending a single signal to relay audio signal input can be switched between two outputs. Sound really simple indeed. Interesting part is a software which is actually pretty easy to write as there are libraries like webduino that allows to write pretty complex tasks with a few code lines. Of course using Arduino and Ethernet Shield seems to be to expensive tools for such a simple task, but if you have spare lying around and gathering dust – why not. And don’t limit to audio only – relay can switch other things like lights, motors and other that comes to your imagination.

Continue reading

JAN6418 Valve Preamplifier – The Amazing Headphone Amp Kit

In present days, there is many type of headphone amp kits available on the market. However, majority of them are not as good as they’ve claimed. In fact, they’re costing up to hundreds of dollars and consuming a lot of energy!

For those who want to try out something cheaper and energy saving headphone amp kit, maybe you should have a look on the JAN6418 Valve Preamplifier.

Continue reading

Drawdio – It’s Time to Draw Your Music!

When someone tells you that you can draw your favorite music by simply using a pencil, would you consider that person a nuts? Honestly, it’s very hard to convince the public that we can actually drawing the music with only a 2B pencil! However, nothing is impossible, especially in this bizarre 21st century, where many wacky-doo stuffs available in the market. Well, thanks to the Drawdio, the magical tool that turns your ordinary pencil into a music drawer. Some of you here must be wondering, “How Drawdio got its name?” Actually, Drawdio is the combination words of “Draw + Audio”. It cuts away the ‘Au’ part, and combined it became “Drawdio”! To be honest, it’s one of the most amazing devices that being invented in the early 21st century. For your information, it’s definitely a great tool, especially for the beginners. There are many possibilities can be created by using the Drawdio. Drawdio is a very simple musical synthesizer. It uses the conductive properties of pencil graphite to create different sound effects. A single AAA battery can operate the Drawdio for many hours, even the “nearly dead” batteries will work fined with the tool. In this case, you can use…

Continue reading