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Software To Die For – January 2009

Korsali Kyu

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Software To Die For – February 2009

Sofité Mefforêr

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4-Port USB Outlet Plate

This is a simple project, but one I hope you will find useful. Recent upgrades of 2 of my PC’s with bang-up-to-date motherboards, have demonstrated a need for USB ‘A’ socket headers, either to fit on a standard PC Component plate, or a spare blanking panel on the front of the PC. I’ve tried sourcing [...]

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Cullercoats – An Alternative Guide

More on Page 2 »

This is Cullercoats, once a small but identifiable community, now sadly just part of the ribbon of development reaching north up the coast from the river Tyne. That’s not to say it has nothing to offer – it has: There a two lovely beaches, the small one within the harbour [...]

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Using The DRO

Front Panel
The front panel of the DRO should look something like that given below. The LCD display is sited behind the transparency on the left, and the 21 tact-switch actuators are sited underneath their individual red pads.

DRO Front Panel

The keypad logos are hopefully self-explanatory, but briefly consist of:

Numeric keys 0-9, together with decimal-point.
The axis [...]

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DRO – Tools You Will Need

Board Assembly
The following should be considered essential for mounting the components on the circuit boards, and attaching pin-headers to the LCD display:

A soldering Iron – 15-25 watts, preferably with a choice of 2 bits – one conical, the other flat (see photo)
Solder – I use 22swg resin-cored 60/40 tin/lead alloy (Rapid Electronics)
Solder braid (’Soldamop’ from [...]

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DRO Bill of Materials – 2

Switches S1-S21. These are miniature TACT switches for the keypad and it is essential to purchase a similar product to that used in the prototype otherwise use of the keypad PCB may not be possible.
The switches used have the following characteristics according to my Eagle schematic editor: The original manufacturer is Omron, and the ‘package’ [...]

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On Ropery Banks

On Ropery Banks Jinny was sittin
She had on a bed-goon just new,
And blythely the lassie was knittin
Wi’ a yarn of the bonny sky-blue:
The strings of her cap they were hingin,
Se lang on her shoulders se fine,
And hearty Aa heard this lass singin
Me bonny keel lad shall be mine.

Chorus:
O wad the keel come doon the river,
That [...]

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Bonny At Morn

Bonny at morn

The sheep’s in the meadow,
The kye’s in the corn,
Thou’s ower lang in thy bed
Bonny at morn
The sheep’s in the meadows,
The kye’s in the corn,
Thou’s ower lang in thy bed
Bonny at morn

Canny at neet,
Bonny at morn
Thou’s ower lang in thy bed
Bonny at morn.

The bord’s in the nest,
The trout’s in the burn,
Thou hinders thy [...]

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The Blackleg Miner

Blackleg Miner

It’s in the evenin after dark
When the blackleg miner creeps to work
With his moleskin pants an dorty short
There goes the backleg miner

He takes his pick an doon he goes
To hew the coal that lies below
But there’s not a woman in this toon row
Would look at a blackleg miner

Oh, Delaval is a terrible place
They [...]

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Bonny Gateshead Lass

Aa’ll warrant you’ve never seen me lass, hor name Aa cannot mention,
for fear you’ll gan and tell her how Aa like her so Aa dee!
Well it’s just for lads and lasses for to whisper their affection.
The bonniest lass in Gateshead’s bonny face has bothered me.
The bonniest lass in Gateshead’s bonny face has bothered me.

Well the [...]

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Sally Wheatley

Now I’m most depressed and sad where Aa once was blithe and glad
Aa could trip aboot the toon both trim and neatly
Aa was happy night and morn but from all such joys I’m shorn
Since Aa fell so deep in love with Sally Wheatley

Chorus:
And it’s oh dear me what am Aa ganna dee
Sally stole away me [...]

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Music To Have Your Teeth Out By – 2

« Previous MTHYTOB – 2 Next »

Apologies to Linux & MAC users for the Microsoft-only player. Until I fix this problem an URL to the (m3u format) playlist is here.

To launch the playlist in a separate page (Linux & MAC users) go here.

8. Will You? – from ‘Breaking Glass’ by Hazel O’Connor 1995.

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Cremelo Cutting Plan

Cremelo Plan & Elevations

All dimensions in the above are in millimeters. Material I used was 20 swg aluminium. Fixing holes for the two valve bases are not shown, as the bases you use may not be the same as mine. Similarly, you should check the dimensions of the two foot-switch bushes and change size [...]

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DRO Bill of Materials – 1

You will need the following items. The photographs are for the benefit of those new to electronics, also I’ve included a link to a datasheet where possible, to satisfy the curious. So I ask the patience of those to whom all of the following is old-hat!

Item
Comments

Main processor printed circuit board.(DRO V2.1)

DRO Printed Circuit Board [...]

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DRO Component Identification

Component Identification
If you are already fully familiar with electronic components, then feel free to skip this section, as it’s mainly intended for those who have none or little experience of electronics. Components are also illustrated in the DRO Bill Of Materials page.

Resistors

Resistor Symbol

Resistors are usually cylindrical in shape with axial wires emerging from each [...]

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DRO Main Circuit

 

If you have followed the Design Walkthrough, we have now covered almost everything in the DRO design, apart from the liberal smattering of decoupling capacitors. (all of value 100nF) Apologies for the rather busy circuit, and if you need to look closer, I advise downloading the (free) evaluation of Eagle and viewing the schematic in [...]

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DRO Design Walkthrough

A WalkThrough The Design
Foreword: You don’t need to read any or all of this to build the DRO, but I hope you will be tempted. It’s included for those who are interested in the analysis and design required for what is a moderately complex piece of electronics. Please note that in the following sub-circuits, the [...]

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Micro-controller Sale

The following are offered for sale, all are new and unused: