dBi, dBm and mW?

January 23rd, 2011
The terms dBi, dBm and mW are all measurements used when talking about wireless communications. The terms dBm and mW are used when talking about the output power of a transmitter or wireless interface. The term dBi is used when talking about the Gain of an antenna.

dBm and mW

The terms dBm and mW are the two ways of expressing the output power of a wireless… Read More

ATMega32A Breakout Board

January 14th, 2011
The objective of this project was to create a microcontroller breakout board that can be embedded into projects. I designed a board very similar to this one around 3 years ago however at the time my PCB design skills were almost non existant, hence the revised version. The new board has several new features which add value to the design and make this board a great all rounder for embedded applications.

… Read More

General Hand Controller

December 18th, 2010
This project covers a section of hardware that was built for my final year project and my group mechatronics project. This is a general purpose hand controller or human machine interface device. Overview The Hand Controller project was designed to be used within several different projects. Thus the design decisions involved made this device very versitile.… Read More

Dual Rail Linear Regulated PSU

September 28th, 2010
This morning the problem was given to me to create a 5v Regulated power supply that has two seperate rails. Granted this is a very simple project, but hopefully its useful to someone.

Dual Rail 5V PSU PCB Layout

The supply has dual input headers as it is designed to be powered by two 12v Battery Packs. However it is not required to use both… Read More

Basic Servo Gripper

August 20th, 2010
I was going through some pictures of projects I undertook whilst at University, I came across some pictures of a servo driven robotic gripper that was made for the Mechatronics 2 course.  

The gripper uses one servo to open and close the jaws, the servo horn was mounted onto a plastic gear. This gear was a modified from a Meccano set this… Read More

1.5A 5v Regulated Linear Power Supply

August 10th, 2010
Here is quick power supply that was designed for use within the Lab Power supply project (Still a work in progress). This 5v Supply is to run all the logic, Microcontroller and LCD within the unit. Attached at the bottom of the page is the PCB and SCH file.

The power supply takes an AC input from a transforemer. When selecting the tranformer ensure… Read More

Portable Air-Stream Mast

August 8th, 2010

After much talking about it, Machspeed, FireFox, Shadey and Myself decided to finally do it. We built a portable 6.5m Trailer Mounted Mast for Air-Stream.

The design is quite simple. It consists of:
  • 2 x 3.25m Sections of 50x3mm Alu Pipe
  • 4 x 6mm Wire Rope Guide Wires
  • 8 x 20L Water Drums
  • 1 x 6x4 Trailer

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Building a Work Bench

July 18th, 2010
Recently i bought myself a bench top drill press, only to discover my workbench was too high for it and i didnt have enough room. I decided that i simply needed another work bench. Below you can find a small work log of the process i use when building work benches. The bench i am building in this log was made to match my previous work benches. This one however is shorter and not as long as the rest, this making it the ideal size for my drill press. The… Read More

Air-Stream Woolsheds Online!

June 14th, 2010

After two days of slaving woolsheds is now connected to the Air-Stream network. Machspeed, ZadZad2 and Myself spent our time fabricating and modifiying an old windmill tower for use with microwave wireless equipment.

Air-Stream Woolsheds is now connected to Air-Stream Gulfview Heights, which makes it currently the longest link in the Air-Stream… Read More

Basic Switch Mode PSU

June 7th, 2010
This is a quick little project i have done which i find very useful.

This particular power supply uses the LM2576T-5.0 switch mode regulator to regulate a higher DC voltage down to 5v.

the circuit itself is nothing new and is straight from the manufactures datasheets, The circuit board is my work. The regulator itself is able to… Read More
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