Tobias Wooldridge TobiasWooldridge

## gist:22f0cdca75190b9a473f

      
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                TobiasWooldridge
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              April 4, 2024 20:03
            
              
                How to Unbrick a Kindle Paperwhite
              
          
    How to unbrick an Amazon Kindle Paperwhite™

This guide instructs you in how to unbrick an Amazon Kindle Paperwhite. The consequences of following it are your own responsibility. This method (opening the Kindle and using the serial interface) should be a last resort and should only be considered if other methods fail
The Guide


Pry open Kindle using a prying tool
Unscrew the screen and remove it from the base. Note that there's a screw hidden under the adhesive at the top in the middle
Solder tin wire to serial ports on the bottom
Attach tin wire to USB TTY device (order is ground, RX, TX, from the kindle's perspective, where GND is the smallest pad) and plug USB TTY device into your computer
Open Putty on your computer in serial mode, with the serial port specified as your USB device and baud configured to 115200


## WorkshopPart1.js
describe("Part 1", function () {
    describe("add", function() {
        it("calculates that 3 + 4 = 7", function () {
            expect(add(3, 4)).toBe(7);
        });
    });

    describe("mul", function() {
        it("calculates that 3 * 4 = 12", function () {
            expect(mul(3, 4)).toBe(12);

## 1.js
describe("Part 1", function() {
    it("add calculates that 3 + 4 = 7", function() {
        expect(add(3, 4)).toBe(7);
    });

    it("mdul calculates that 3 * 4 = 12", function() {
        expect(mul(3, 4)).toBe(12);
    });

    it("identityf returns its argument", function() {

## index.html
<!--
Use the following or similar to execute JS
-->
<html>
<body>

<pre>
    <script>
        function log(arg) {
            document.writeln(arg);

## index.html
<!--
Use the following or similar to execute JS
-->
<html>
<body>

<pre>
    <script>
        function log(arg) {
            document.writeln(arg);

## index.html
<!--
Use the following or similar to execute JS
-->
<html>
<body>

<pre>
    <script>
        function log(arg) {
            document.writeln(arg);

## Primes.java
import java.util.ArrayList;
import java.util.BitSet;

/**
 * Created by Tobias on 24/04/2015.
 */
public class Primes {
    public static interface Solution {
        String getAlgorithm();

## gist:77a834a09e464ea6d37f
It would be neat if you could start a timer on a phone using it's camera and pointing it at an electronic device with a countdown on it.

e.g.

1. Take a photo of a microwave
2. OCR photo
3. Wait 1s
4. Take a photo of a microwave
5. OCR photo
6. Compare the textual results of the two and start a timer based on that (e.g. 2:00 and 1:59 would indicate the timer should start counting down from 1:59 minutes)

## gist:8fe392aee003edec9f2a
### Keybase proof

I hereby claim:

  * I am tobiaswooldridge on github.
  * I am thw (https://keybase.io/thw) on keybase.
  * I have a public key whose fingerprint is AD12 140D 0133 8F8E EBA0  491A 819A 1A6C 41A6 8AA2

To claim this, I am signing this object:

## html2facebook
    function canvasToBlob(canvas) {
        var imageBase64 = canvas.toDataURL();
        var imageBinaryString = atob(imageBase64.split(',')[1]);
        var imageBinary = new Uint8Array(imageBinaryString.length);

        for (var i = 0; i < imageBinaryString.length; i++) {
            imageBinary[i] = imageBinaryString.charCodeAt(i);
        }

        return new Blob([new Uint8Array(imageBinary)], {type: 'image/png'});
	describe("Part 1", function () {
	describe("add", function() {
	it("calculates that 3 + 4 = 7", function () {
	expect(add(3, 4)).toBe(7);
	});
	});

	describe("mul", function() {
	it("calculates that 3 * 4 = 12", function () {
	expect(mul(3, 4)).toBe(12);
	describe("Part 1", function() {
	it("add calculates that 3 + 4 = 7", function() {
	expect(add(3, 4)).toBe(7);
	});

	it("mdul calculates that 3 * 4 = 12", function() {
	expect(mul(3, 4)).toBe(12);
	});

	it("identityf returns its argument", function() {
	<!--
	Use the following or similar to execute JS
	-->
	<html>
	<body>

	<pre>
	<script>
	function log(arg) {
	document.writeln(arg);
	import java.util.ArrayList;
	import java.util.BitSet;

	/**
	* Created by Tobias on 24/04/2015.
	*/
	public class Primes {
	public static interface Solution {
	String getAlgorithm();
	It would be neat if you could start a timer on a phone using it's camera and pointing it at an electronic device with a countdown on it.

	e.g.

	1. Take a photo of a microwave
	2. OCR photo
	3. Wait 1s
	4. Take a photo of a microwave
	5. OCR photo
	6. Compare the textual results of the two and start a timer based on that (e.g. 2:00 and 1:59 would indicate the timer should start counting down from 1:59 minutes)
	### Keybase proof

	I hereby claim:

	* I am tobiaswooldridge on github.
	* I am thw (https://keybase.io/thw) on keybase.
	* I have a public key whose fingerprint is AD12 140D 0133 8F8E EBA0 491A 819A 1A6C 41A6 8AA2

	To claim this, I am signing this object:
	function canvasToBlob(canvas) {
	var imageBase64 = canvas.toDataURL();
	var imageBinaryString = atob(imageBase64.split(',')[1]);
	var imageBinary = new Uint8Array(imageBinaryString.length);

	for (var i = 0; i < imageBinaryString.length; i++) {
	imageBinary[i] = imageBinaryString.charCodeAt(i);
	}

	return new Blob([new Uint8Array(imageBinary)], {type: 'image/png'});