Hobby Projects - Insulation tester, LED Circuits, Meters.

Wednesday, August 22, 2012

Electro tech online – Design Forum

Building an electronic project or want some assistance. Submit your electronic questions at Electro tech online – Design Forum. Experienced members can help find a solution.

Electro Tech has been around for nearly a decade; has a membership of practical and seasoned enthusiasts, engineers and students. Here you may find many interesting ideas for projects and repair/fixing tips.

Repairing Electronics – If you’re trying to fix an electronics device like a TV, Stereo, etc you can discuss it here.

Robotics & Mechatronics – Specific to discussions about robots and the making of bots

Tuesday, August 21, 2012

ECBOT - open platform for mobile robotics

The SBC ECBOT is composed of a 200MHz ARM9 processor (Atmel AT91RM9200) and Spartan3 FPGA family from Xilinx, supports the implementation of the Linux operating system.

ECBOT - open platform  for mobile robotics

ECBOTIt has 32 MBytes of RAM, 2 MB Flash memory and supports serial micro SD memory usage of any size provides 8 analog inputs, 10 digital, serial port and a USB host.

Sensors and Actuators - ECBOT has an I2C bus manager to interface with the analog world (as the central processor AT91RM9200 from Atmel does not have A / D), six 8-bit microcontrollers (Atmel AVR) enable the operation of the sensors and actuators through this bus.

Encaja Linux Portal - Embedded System Design

Mission - "Spread the use of open tools in the design and manufacture of embedded systems based on GNU / Linux. Provide reference designs that can be used in training at different levels or as a starting point for development of marketable products...."

Tuesday, August 14, 2012

Amplify uV from Sensors to mV for uC

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.

Now there is unicode I can wrμite μC. Now we will break into small html lesson, paste this as html or put it in the source… μ .. you get this… μ .More such neat tricks can be learnt at Entities for Symbols and Greek Letters. I know this is a tough lesson like math, but you better get used to this. (I had to fake this tutor, i have a wysiwyg blogging client which takes unicode characters, this wordpress also set unicode, try your experiments with a NoteTab and one old and one new browser for learning better )

μ μ
μ μ
μ ?

I shall still use uC till Touch-It Virtual Keyboard comes with a Pop-Out Greek Symbol Plate in the free version. 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. But i have a right to Promote my Worn Out JPEGs.

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).

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 linearizion 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).

From Schoodles
I cant do better than this, if you still don't understand you are destined to become a Hippie. You will be eternally free from work.

Friday, August 10, 2012

Learn About Electronics - Eric Coates

Many pages, illustrations and Interactive demonstrations in Electronics. A new section on AC electronics, designed to teach the basics of AC Theory in 10 easy to learn modules. Individual topics too like capacitors, inductors, reactance, impedance, etc.

Learn About Electronics - Eric Coates
The Step-by-Step Lessons in Electricity and Magnetism is very simple and full of nice Explaining Pictures. This will work up your appetite to learn more about the Physics and Chemistry in Electronics.
  • Section 3.1 Electromagnetic Induction.
  • In section 2.1 Capacitors.
Eric Coates has 26 year practical career in electronics, and 17 years as a lecturer in vocational colleges in the UK.