Automatically lookup amazon books on booko

amazon logo loves booko logo

I love books and I love booko. So I decided to help Amazon help me check prices on booko with a little Tampermonkey script. It makes the ISBN-13 on Amazon a clickable link that will open a new tab to booko and search for that ISBN. Give it a go!

// ==UserScript==
// @name         booko amazon ISBN link
// @namespace
// @version      0.1
// @description  Make the ISBN-13 a clickable link to booko.
// @author       Jason Lewis
// @match*
// @copyright 2016+,
// @grant        none
// ==/UserScript==
(function() {
    'use strict';
    //var hrefs = new Array();
    var elements = $('#productDetailsTable > tbody > tr > td > div > ul > li');
    elements.each(function() {
        if ($(this)[0].innerText.indexOf('ISBN-13') !== -1 ) {
            var isbn=$(this)[0].innerText.replace(/ISBN-13:\s*(\d{3}-\d{10})/,"$1");
            console.log('isbn is: ' + isbn);
            var url = '' + isbn;
            var a = document.createElement("a");
            var text = document.createTextNode('ISBN-13: ' + isbn);
            var li = document.createElement("li");


I am transitioning GPG keys

Hash: SHA1

I am transitioning GPG keys from an old 4096-bit RSA key to a new
4096-bit RSA key.

This transition document is signed with both keys to validate the

If you have signed my old key, I would appreciate signatures on my new
key as well, provided that your signing policy permits that without
reauthenticating me.

The old key, which I am transitional away from, is:

pub   4096R/505E764E 2011-06-28
      Key fingerprint = B10B 2E72 BB30 FE47 ABC2  F1B9 FA57 1EC7 505E 764E

The new key, to which I am transitioning, is:

pub   4096R/93176CCD 2016-10-14 [expires: 2026-10-12]
      Key fingerprint = 4639 4DFE EFF0 344F E116  E974 C4E9 00B0 9317 6CCD

To fetch the full new key from a public key server using GnuPG, run:

gpg --keyserver --recv-key C4E900B093176CCD

If you have already validated my old key, you can then validate that
the new key is signed by my old key:

gpg --check-sigs C4E900B093176CCD

If you then want to sign my new key, a simple and safe way to do that
is by using caff (shipped in Debian as part of the "signing-party"
package) as follows:

  caff C4E900B093176CCD

Please contact me via e-mail at <> if you have any
questions about this document or this transition.

  Jason Lewis
Version: GnuPG v1


Command Option R on a Windows keyboard

Today I had to do an OS X internet recovery but I only had a Windows keyboard. Normally the keyboard combination to launch the Internet Recovery on Macs is Cmd+Option+R but I couldn’t find the right combination on the Windows keyboard. After much googling and experimenting, it turns out its Windows+Alt+R

Letter to the minister for small business about slow Internet in Australia

Today I wrote to the minister for small business complaining about the crap Internet in this country. I urge you to write to your MPs also if you think the lack of NBN is a problem.

Dear Mr Billson,

I’d just like to express my concern over the woeful state of Internet in Australia.

As a small business owner, I’m finding it prohibitively expensive to get a decent Internet connection for my business and since the government scuttled the NBN its looking increasingly like fast Internet is basically only for big businesses or people with a lot of money.

Please can you do something to get cheap fast Internet for small business?

I did write to Mr Turnbull about this and the best he could come up with was to blame Labor. I’m sick of hearing excuses. I need action in order for my business to remain viable and continue providing employment to Australian Tax Payers. Fast and cheap Internet is part of what I need to do that.

Thanks for listening

Clock Part 3

large 7 segment display clock showing 9:53 time

I finally finished the outer case of my clock. Only 19 layers of 3mm acrylic stacked on top of each other.

Laser cutting the rear panel and finger slot
red perspex box with clock electronics showing, rear lid off
Rear panel with finger slot and barrel jack holder
rear panel of clock with wire going into the finger slot
Barrel Jack inside the finger slot

I built a finger slot into the back of the clock so it’s easier to carry, but also to house the barrel jack for mounting the clock flush to the wall, allowong me to hide the power cord in the wall (oneday)

pile of acrylic sheets neetly lined up
This is the pile of acrylic I had to cut out of the inside of the clock.

That pile on the left was cut out to make the cavity in the case.


Clock Part 2


A bit more progress on my clock. I installed the dirty pink gel filter to increase the contrast ratio of the 7 segment displays, and started cutting the final case out of red 101 acrylic. Lots of laminations.

a digital clock showing the time of 11:22
side of digital clock showing laminations of the case and the inner electronics and wires
Side of clock


I wrote to Turnbull to complain about the lack of NBN. Here is his reply

After traveling to New Zealand for #lca2015 and experiencing fibre to the home at my friends house, I decided to write to Malcolm Turnbull to express my concern about the slow rollout of the NBN in Australia.

He actually personally replied directly to my email only 4 hours later. In the interest of openness I am putting the whole email below. I have rearranged it to fix the topposting.

The tl;dr is “It’s all Labor’s fault”

My email to Mal. (I think we can say we are on first name terms now)

From: Jason Lewis
Sent: Tuesday, 20 January 2015 1:52 PM
To: Turnbull, Malcolm (MP)
Subject: NBN Roll-out

Dear Mr Turnbull,

I’m writing to express my concern with the woefully slow roll-out of the

I’ve recently been travelling in other countries where fibre to the home
is already commonplace and it makes the Australian broadband offering
feel terribly inadequate.

I feel this will lead to a further reduction in Australia’s
international competitiveness.

Please devote more resources to speeding up the roll-out.



And his response:

Dear Jason,

Thanks for your candid comments.

Unfortunately Labor significantly underestimated the cost and complexity of this project and, as a result, released rollout schedules that were unrealistic and inaccurate.

For instance, Labor originally forecast that 2.7 million houses would be passed by fibre by 30 June 2014. In NBN Co’s last Corporate Plan released in August 2012, it was revised to 1.3 million houses passed by fibre. The comprehensive Strategic Review completed in December 2013 however, found that the NBN would only pass 467,000 houses with fibre by 30 June 2014. The actual number reached by 1 July 2014 was 492,000 premises – less than one-fifth of the original target.

I highlighted the problems which Labor created with their false rollout expectations in a recent blog available here:

In addition, the Government recently undertook a Broadband Availability and Quality Report, which found that there are more than 1.6 million premises across Australia with very poor or no fixed broadband access at all. However, Labor made no effort to prioritise these areas in their rollout.

The Government has instructed NBN Co to revise its current rollout schedule to meet three key objectives:

  1. To ensure that the underserved areas in Australia are prioritised in the NBN Co rollout. On average, areas with very poor broadband will receive upgrades two years sooner.
  2. To ensure that the NBN upgrades are delivered sooner and more affordably, by using a mix of technologies. The Strategic Review found that under the model adopted by the Coalition, the project will be finished four years sooner than would have otherwise been the case.
  3. To ensure that information provided in the public domain is accurate and can be relied upon by businesses and households waiting for broadband upgrades.

The fact is that the NBN, up to the election, had reached only three per cent of Australian premises after four years and $6.4 billion of funding.

NBN Co is now determining which technologies are most cost effective and should be utilised on an area-by-area basis so as to minimise peak funding, optimise economic returns and deliver broadband upgrades sooner. This is highly demanding and complex work which involves renegotiating deals with Telstra and Optus to take over portions of their fixed line networks. Naturally this is taking time to complete.

In the meantime, NBN Co has continued to expand its fibre network in areas where construction contracts had been signed at the time of the election. Across the country, more than 500,000 premises have been passed by NBN fibre and work is underway to extend the network to reach a further 600,000 premises.

Sites that are not currently represented on the NBN Co maps are being reviewed in line with rollout priorities. Importantly, the network will continue to be built on a state-of-the-art platform, but will use existing infrastructure where it makes sense to do so. In areas where work has not commenced, NBN Co will be making decisions about construction on the basis of review findings. NBN Co is significantly advanced in planning the multi-technology mix and rollout plans will be publicly released once they are completed. More information about the NBN rollout will be published by NBN Co on its website when it is available.

You may also be interested to know that the Government has secured the progressive transfer of the necessary parts of Telstra’s copper and HFC (pay TV) cable networks to NBN Co at no additional expense. Telstra’s 1.4 million shareholders have been ‘kept whole’ in keeping with the Government’s pre-election commitment.
These agreements are a key milestone in shifting the NBN to the Multi Technology Mix the company has determined is its optimal strategy. The December 2013 Strategic Review found the shift to a multi-technology NBN will reduce its cost by $30 billion, and save at least four years in construction time.
Importantly, under these agreements, NBN Co will make use of Telstra’s copper and HFC networks (i.e. the network used to deliver pay television) rather than decommissioning and wasting these assets, as Labor had planned.

Yours sincerely,

Malcolm Turnbull