Hobby Lab

Test Instruments and Small Tools for a Hobby Lab

One of the oldest and reputed Electronics Magazine. construction projects, computer, technology, computing, PC technology, microcontroller. Books & CD-Roms, E-blocks, Kits & Modules.R8C pages, RFID pages.

This was one of the Mags along with Radio Electronics that made me a better designer. Radio Electronics was my first favorite mag.

Elektor Electronics – Circuits Projects Community

They also have some of the issues for download. Some nice projects too are available with code for reference and experimenting.

Online Store and Members Area

They have a Forum for Discussion and Displaying your Completed projects. Even seek help when stuck with your project.

Then a Kits and Tools Store where you can buy the things you need to make the Electronic Projects, ..

Elektor Electronics - Hobby Circuits Projects

I though it was time i made a collage for my old guru, then even i am getting older. I wish there was an Internet when i was young. Time to use my rusting Time Machine,

Updated Sept 2014

At the PackRat WorkShop Lee Bell has archived Power-Energy Ideas, Mechanical Howto and Robot Designs too.  A Practical Man, His drawings are a language by itself. He has created a useful resource which will keep a DIY Enthusiast busy for many months.

Alternate Energy Plans by Lee Bell

“I already had a marine deep cycle type battery and an alternator that someone had traded me a while back in exchange for a 1hp dc treadmill motor. He was building a windmill and the car alt needed too many rpm’s for what he wanted to do. I think it’s a standard GM type.” – Lee Bell

Alternate Energy Plans by Lee Bell

delabs Notes

Alternate Energy, storing and managing your own small power source, are an invaluable asset for Home or Small Business.

Depending on oneself, not only develops skills but also keeps you in form always. Building an energy source cost-effectively, requires you to put in a lot of learning and building efforts.That itself may become your future Small Business

Remember Fossil Fuels are Running out fast, Only Internet Communications and Alternative Energy will keep Business Blooming.

The lifestyle has to change, The future Generations are going to face the Heat, or is it Bitter Cold ! Even Freezing ?

Coal and Steel with Steam brought about the First Industrial Boom. Then Oil created unprecedented Magic, the Second Technological Revolution. This will not last long. If only Rover found Oil in Mars, this post was not needed.

Some projects are Audio VU meters, Serial Port PIC programmer and other interesting articles. The low and high logic levels are displayed by LEDs,which are OFF if the probe tip is floating or connectedto a hi-impedance (>220k) output. A pulse transition isdetected and is indicated by turning on the LED for80 ms.

Erik Grindheim and Engineering Assistant

Logic State Analyzer – The analyzer fetches 300 single bit samples at a select-able rate (in 16 steps from 40 Hz to 1 MHz). It has aprogrammable start at High-to-Low or Low-to-Hightransition at input. Digital waveforms are displayed in apseudographic mode on the LCD

Electronics pages of Erik Grindheim and Engineering Assistant

Engineer’s Assistant – Electronic hand-held instrument invented by mr. Voja Antonic. It’s based on Microchip’s PIC16F84 (running at 10 MHz) and a standard 2×20 character LCD-module.

Read More →

Amplify uV from Sensors to mV levels for A/D Converters, which in turn may drive a display or connect to a uC means MicroController.

I have my own human interface and memory limitation. I am like a 8086 based nobody’s computer in a Penta-Core 5 Ghz Fiber-Computing World, add a 5 Teral Byte HDD. I am Obsolete, i am Legacy.

Now getting back to Bizness, the inputs from the world we interact are analog, A uV level from a Strain Gauge to measure Weight/Pressure; mV from a K Type Temperature Sensor or mV from LVDT Displacement Transducer to Gauge measure linear displacement. All these Low voltage/current, AC/DC need some signal conditioning and special construction – FOR – Amplification, Attenuation, Noise/Pickup Immunity/Rejection, Linearizion, Isolation and Transmission (long wire/wireless).

Thermocouple Amplifier Standard

This means take a small signal sample in the best possible way. The Sensor/Transducer shape and sensing/converting element/technology is chosen/developed. This low mV/uV is then Amplified/Cleaned and Transmitted.Some steps like Linearization can be done by software not all steps. Now we have a nice 0-10 V or 4-20 mA Signal which any A/D with process enthusiastically. The Digital signal will be eagerly processed by a uC with firmware, without batting a eyelid or like the kids say “look no hands” (then its plaster of paris for a few weeks).