engineer-in-wonderland

Rooting around in the fascinating stuff at the bottom of a draw labelled 'Engineering - Junk Miscellaneous'. Delving amongst the delightful...

Tech news by

I met EW’s ‘Rising star new engineer of the year’

I attended Electronics Weekly’s Elektra Awards last night and sat next to the graduate who won Rising Star New Engineer of the Year – Daniel Marshall.

What an impressive, enthusiastic, and nice guy.

For me, the impressive bit is that he didn’t actually do an electronic engineering degree at…

Read More

TI spice is not so easy

Having tried the excellent LTspice from Linear Technology, I thought I would give Texas Instrument’s simulation tool a go.

It seems to be based in TINA – which comes from Budapest.

However, not only did I have to sign up to be a fan of TI, but also had to…

Read More

LED flasher actually flashes

Maybe I shouldn’t be surprised, the led flasher modelled in LTspice works, just about as intended – nice crisp flashes at about the right rate.

Seeing as everything is relying on Vbes and Vfs, the timings of the real thing are pretty similar to the model – the scope trace is…

Read More

LED flasher 3 (6!)

Much like kids get addicted to video games, I find time dilating as I mess around with ideas for a ‘simple’ LED flasher using Linear Tech’s free version of spice – LTspice – as recommended by Steve Kurt.

Note: here is a breadboard version.

And now I have led flasher version…

Read More

LED flasher 2: Hats off to Mr Kurt and LTspice

Mr Kurt, wise commenter of this parish, drew my attention to LTspice.

What a revelation :-)

LTspice is a free version of spice from Linear Technology, and it is delightfully easy to use, intuative, and seems to work rather well.

Note, there is a flasher version 3

Current through component and…

Read More

Neat PC scope + sig gen + spectrum analyser lands on tech desk

An unsolicited PC-based instrument landed on the tech desk at Electronics Weekly.

It is the minimalist BitScope Micro (BS05), whose delightfully clever enclosure is a length of heatshrink sleeving.

It combines:

Scope
Logic analyser
Protocol analyser
Data recorder
Spectrum analyser
Arbitrary waveform generator
Clock generator

(Full spec below)

If…

Read More

Free 3D Gerber viewer

Someone called Rafal Powierski got in touch about a 3D Gerber file viewer he has written.

Now, I cannot vouch for any of it, so do your own due diligence, but the video looks pretty interesting.

There is also a simulated pcb fly-through.

Apparently, this is largely a weekend…

Read More

Fingers crossed for long wavelength LEDs

Having made a few things containing leds, it has always been nice to have an easy supply of light sources that do not affect night vision – for example, illuminating a scrolling map box for long-distance off-road motorcycle racing (in those pre-GPS days), and the dashboard of a…

Read More

LED flasher circuit

With cycling safety in mind, I bought a pair of low power red LED things that replace the bungs in the end of drop handlebars.

They are a neat way to get a bit of extra visibility – and to give a bicycle some visual width, I assume.

Sadly, the ones…

Read More

Neat log current source

I take my hat off to engineers that know transistors in every intimate detail.

The other day, searching for something else completely, I came across Nat Semi (now TI) document LB-38 ‘Wide range timer’.

It times from 2ms to 2,000s using a single potentiometer – a million to one…

Read More