Wednesday, August 5, 2015

Civic Hacking - Creating a Pebble Watch App for Recycling Data in Appleton, WI

Guest post by Ross Larson (reposted with permission)

tl;dr  I released a Pebble App for Appleton Recycling Data.  It was fun.
Ross' Pebble Watch displaying Appleton Recycling Data for his address in Appleton, WI, USA
Long Version:
Civic hacking is an activity that encourages people to take existing public data and mash it together or organize it in a clever way to increase its usefulness.  I've been intrigued by civic hacking ever since I saw the great work being done by Hacking Madison and CityCamp Madison, especially Greg Tracy's SMSMyBus project, and Scott Resnick's work towards creating Madison's Open Data initiative.

Recently, I had the honor of being invited to the Appleton's inaugural city hackathon.  It was held at Lawrence University on June 6, 2015.  When I was invited, I began to think about what I should do at the event.

Here were my guidelines.  I wanted something that was:

  • interesting, 
  • useful, 
  • and simple enough that I could expect to complete at least a small version of it if given a day to work on it.

Enter: Mike Putnam's Appleton API.

In his free time, Mike had created a way to interact with public data that was on Appleton's public portal, found at  I thought that given the work that Mike had already done, I could probably make a way for Mike's API to interface with a Pebble Watch, which I could use to check whether or not I needed to bring out the recycling.  I then challenged myself to complete a working version of the application by the end of the June 6th hackathon.

Here are the typical steps to code a working application from scratch:

  • Decide what you're going to code.
  • Determine what tools you need to write code.
  • Set up your "environment" and start coding.
  • Do a "hello world" app to start.
  • Modify the "hello world" app slightly.
  • Modify your "hello world" app to do your task at it's least complex level.
  • (Optional) Add complexity to get new features or make the app work better.
  • Ship it!

I'll describe these steps in relation to my Appleton Recycling Date Checker for the Pebble Watch.

  • Decide what you're going to code.

I'm going to make a "Recycling Checker" for the city of Appleton, Wisconsin.  It will help me figure out when to put out the recycling bin, so that I don't forget.  It will be a Pebble watch application.

  • Determine what tools you need to write code.

To write Pebble applications, I first needed a Pebble developer account (which I had already created).  Next, you can either download and install their Pebble SDK (Software Development Kit) or make an application online in a web browser using CloudPebble.  I decided that because this app is for a hackathon,and it's a relatively simple app, I'd try out CloudPebble.  Using CloudPebble also meant that I could test my code on a "virtual" watch without having to load each change on a watch, which made coding go faster.

  • Set up your "environment" and start coding.

Since I was using CloudPebble, all I needed was a laptop, a web browser, and an internet connection.  If I wanted to install the application on an actual Pebble watch, I needed one of those, but I already had one, so I was good to go.  I decided to try using PebbleJS since it looked like a simplified, streamlined way of creating my application.  Creating a CloudPebble application does give you some sample code, and it allows you to get your feet wet without having to create your first project from scratch.

  • Do a "hello world" app to start.

After noodling around in the default CloudPebble app, I used the PebbleJS Tutorial to create my first project, since the tutorial allows you to edit the tutorial code directly.  I thought that was an awesome touch.  I went from zero to "hello world" very quickly because of this tutorial and its integration with CloudPebble.

  • Modify the "hello world" app slightly.

My first modification was to change the word "world" with "Appleton".  Changing one word without changing functionality is a safe first step in editing code.  That worked, so I continued on.

  • Modify your "hello world" app to do your task at it's least complex level.

The sample tutorial application gets weather information.  I wanted to get recycling information.  However, I could change the URL of the "weather" API call to Mike's "Appleton API" and try to get a meaningful result.  Luckily, one of the results the API returns is the next day that your recycling needs to be put out.  I hard coded my property ID (which represents my address) in order to test the web application call and display the data.

This is how the URL would look for the Appleton Makerspace:
It would return lots of data, including this:

        "2015leafcollectiondates": "October 19-23, November 2-6, November 16-20",
        "elementaryschool": "Lincoln",
        "firestationaddress": "1701 W. Brewster St",
        "firestationnumber": "5",
        "garbageday": "Monday",
        "highschool": "Appleton West",
        "middleschool": "Wilson",
        "recycleday": "Monday, 08-10-2015",
        "sanitarydistrict": "Appleton",
        "schooldistrict": "Appleton Area",
        "watersource": "Appleton"

What I needed was hidden inside all of the other data.  I wanted to show the value for "general infomation"->"recycleday" on my screen.

Through some reading of the documentation, trial and error, and effort, I was able to accomplish this in 47 lines of Javascript:

var UI = require('ui');
var ajax = require('ajax');
var Vector2 = require('vector2');
// Show splash screen while waiting for data
var splashWindow = new UI.Window();
// Text element to inform user
var text = new UI.Text({
position: new Vector2(0, 0),
size: new Vector2(144, 168),
text:'Downloading trash data...',
// Add to splashWindow and show
// Make request to Appleton API
//Proof of Concept - hard coded URL
function(data) {
// The location of the recycling day is data[1].recycleday;
var recycleDay = data[1].recycleday;
// Create a Card with title and subtitle
var card = new UI.Card({
title:'Next Recycle Day:',
// Display the Card;
function(error) {
console.log('Download failed: ' + error);

  • (Optional) Add complexity to get new features or make the app work better.

I created a github repository with this code, so that I could easily track and change the application as I saw fit.  Most of the complexity came after the June 6th hackathon.  CloudPebble's integration with Github was very convenient here.

  • Ship it!

I downloaded the compiled"pbw" (pebble watch) file to my phone.  Using the Pebble App, I could download the Appleton Recycling App to my phone, and it would fetch recycling information for me.  Success was mine!

So..... now what?

I succeeded, but only at the smallest level.  The application still couldn't check more than one address, which wasn't configurable without creating your own application.  To make the application useful for anyone besides myself, I needed to implement a configuration page.  I researched how to do this (which was more complex than I would have expected - you have to host your own web page somewhere on the internet).

City Hackathon- the return!

Luckily, I was invited to a follow-up hack night, which was held at Appleton Coworking in July. It gave me another opportunity to interact with other coders and civic minded folk, and I had another excuse to improve the app.  After discussing the event in the #dhmncivichacks channel at the Northeast Wisconsin Slack channel, I went in with the goal of improving the app so that other people could use it, too.  Thanks to some more trial, error, and tutorials (and some pizza purchased by Omni Resources), I succeeded in making a Github Pages-based configuration screen, which I hosted from my own github account.  The source code for that config trickery came from a fork of
PebblePages (thanks, PaulBGD! - you can check out his blog here).

Ship it!  This time,  with feeling!

Given that another human being may actually find this application useful, I decided to publish the application in the Pebble appstore.  I needed to describe the application, make some screenshots, and make the application "production ready".  I decided to create a fork on the DHMN Civic Hacks Github Organization, and I published from there.  This means that I can make crazy changes to my local version without upsetting the "maybe more than one" user of this application!  Hooray!

So, you're done?

Nope.  I'm still working on the application.  Check out my Github Issues List if you're interested in where the future of this application may be.  Hurry!  It sounds like there will be another hackathon within the next month!


We are trying to confirm a civic hacking event for August 19th at the Appleton Makerspace. Check back on this blog for details...

Thanks for writing up your civic hacking experience, Ross! Other people who want to write a civic hacking post for DHMN Civic Hacks are encouraged to do so. Send your posts to bwaldron (at) gmail [dott] com.

Ross says he was invited to the DHMN civic hacking events, but you don't need a personal invitation to participate. DHMN civic hacking activities are open to all, and you don't need to be a coder to participate. See the Events tab at the top of this blog for info on the next NE Wisconsin civic hacking event. And please, Come and Participate. You (the reader) are invited!


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