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Saturday, July 06, 2019

DIY Electronics Section of Beis.de

Here you will find Audio Oriented projects, many in the German Language. There is one - Converting Analog into Digital (IIR) Filters which is useful for Mixed Design students. Then there is a FPGA-Based Digital Audio Peak Level and Correlation Meter with many features. The Hi-Fi Audiophile will like the Tools - Audio Preamplifier, Weighting Filter Set and Universal Filter.

DIY Electronics Section of Beis.de

 DA2USB - Digital Audio to USB Interface

DA2USB - Digital Audio to USB Interface

The DA2USB is a USB interface for connecting digital audio sources (S/PDIF or Toslink, with adapters also AES3) to a PC. It comes without proprietary drivers, i. e., there is no software to install and there is no threat that the hardware sometime will become obsolete waste because the manufacturer does not support it any more with up-to-date drivers (like my fine and expensive sound card did).

Design Challenges at Circuit Cellar

Since its founding in 1988, Circuit Cellar has delivered exactly what its paying subscribers demand-intensive, exploratory articles about hardware and software methods for embedded-control systems.

Circuit Cellar - The Magazine for Computer Applications

Circuit Cellar Ink, the best magazine devoted to hardware and embedded computer development, or "What's Inside the Box".

Circuit Cellar - The Magazine for Computer Applications

Are you wondering how it all began?
By Steve Ciarcia (Founder, Circuit Cellar)

"His first statement upon hearing about BYTE’s redirection was “How about we start our own magazine?” We had the staff, the expertise, the credibility, the support, and most importantly, the money. It was time to go for it.

Building a Traditional Workbench

Keith S. Rucker has provided full plans for a Mechanical Workbench. Electronic Enthusiasts will need such benches when they work with industrial robots or manufacturing machines.

Building a Traditional Workbench  wayback copy

"if you are going to use hand tools in your woodworking, perhaps the most important tool to have is not the tools themselves but a good bench to do your work on. When I first started to set up my shop, I had only been out of school for a little over a year, been married a little less than a year and had just bought a new home.

Building a Traditional Workbench

To help spell my situation out, we were poor. Even though the finances were not the best in the world, I began to accumulate a few basic tools and began making some of the much needed furniture in my new home."

By Keith S. Rucker

Monday, June 17, 2019

Reuse Wireless Keyboard and Mouse

Many people give up on Wireless Keyboard Mouse Combo after a few months of "Novelty". This is due to the chore of replacing batteries and also the cost and wastage (carbon foot).

Then i have long been suggesting since nineties, ferrite smps coupled charger docks. This is like RFID, but more like RF power transfer. One half of Ferrite E-Core is in the Gadget and the other half is in the Dock. When the Gadget is docked it is sensed and power transfer just like in SMPS. Rechargeable batteries in the gadget.

Here is the Schoodle for building this. The Mumbo Jumbo to make a Wired-Wireless Combo

Reuse Wireless Keyboard and Mouse

How-To Convert Wireless to Pseudo-Wired 

Now you got a Wireless Combo, it can be converted into wired yet wireless, it is simple the wires will now carry 3V power to the Keyboard and Mouse, so no batteries. A little gentle and smart drilling is needed for the Mouse.

Get a 5V Adapter, the ones used for charging phones and music players. If you cannot get 5V use a 7805 to derive a 5V from 6 or 9. Use two 1N4007 in series on the positive line to drop 1.5V - test out with a dummy load of 10K and 100uF cap. Now use this to power both the mouse and keyboard with thin dual-core wires leading to the battery terminals. Soldering this may be a delicate job. Now you got a Perpetual Wired Keyboard Mouse Combo. The Interface still remains Wireless.

Another way is use Rechargeable Batteries for both. The wires will carry exactly a regulated 3.3V from a LM317 circuit which can be tweaked. The Mains adapter can be any 6V or 9V raw DC. You can have a Connector for the power wires when you want it to be wire free. This may require greater Gadget Opening and Drilling Expertise.

Reuse - Be Earth Friendly - Keep your Carbon Footprint smaller than that of a Yeti.

Wednesday, June 12, 2019

Arduino and Ethernet Interface

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.

Arduino Open-source Electronics Prototyping

Arduino Open-source Electronics Prototyping

The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button.

delabs Schematics