Category: Design

Printing Stickers

paschmann

I recently purchased an Epson ET-8550 and a Cameo 4 for printing some fun stickers for myself, kids and friends. Here are a couple of things I have learned and some process related information I have been using.

General Process Flow:

Design in Illustrator, add inner and outer cut lines (on separate layers), ensure the border color has a bleed (if needed) -> export as SVG.

In Silhouette Connect, import SVG, Add registration marks, print out on sticker paper (Hide the cut lines layers). Apply any over laminate to the sticker sheet and load it into the Silhouette. Unhide the cut layers. And run the cutting using the Send function.

Cutting depth and force are very specific to the sticker paper and over laminate, so it’s a lot of trial and error.

Helpful Links: read more

Building a Passkit App

paschmann

Building an Apple PassKit app has been an interesting endeavor. Internally at SAP we recently built a small Business Card application which allows employees to create a digital business card, and subsequently generate a individual and customized wallet pass, allowing them to quickly retrieve it, without having to find the app, and open it on their device. Having a wallet pass lets users simply double tap the lock button, authenticate and see a collection of their passes.

Creating a pass has a unique requirement in that an application cannot simply create the pass directly on the device, or in the app. A pass needs to be generated server side, and signed with the appropriate signing certificate. In our case we utilized a small Typescript Node.JS server, which has a single API endpoint which accepts the information needed to populate the business card pass. The API then returns a signed .pkpass file. A .pkpass at its simplest form is simply a zipped bundle of assets and JSON files which describes the key fields and their respective values. read more

Open Source Project: Reach SDK

paschmann

Over the past few years I have found myself re-implementing and re-writing basic features of server, web, mobile or service components. Registration, Login, Forgot Password, Notifications, Search, Help, FAQ, Contact Us, Maps are just a few I can think of, where half way through the development everything seems familiar and I have a case of deja vu. No doubt I have written or implemented a library or service which performs this specific function.

While developing the Changd app I found myself in one of the deja vu moments while writing the email notification service, and decided to pause development, and fix the root cause. After multiple Github issues to support a variety of notification providers, I came across Apprise, a python library which supports multiple notification provides. Since there was not a Node.js implementation, I decided to use Apprise as inspiration and influence for a Node.js library which I aptly named “Reach”. read more

DIY – Patent Idea – Spring Water Bottle Cage

paschmann

Problem: In cycling (and other applications) water bottles are a variety of shapes and sizes. This often makes them difficult to get in or be contained in a traditional bicycle water cage. This attempts to resolve this by offering an “expanding” cage.

Fun but ultimately bad patent idea to create an expanding water bottle holder.

I made a couple models/3D prints to proof it out, but decided against it.

Updated Patent Outline – Vertical Spring-Loaded Cycling Water Bottle Holder

1. Title of the Invention

Spring-Loaded Retention Bottle Cage for Bicycles

2. Field of the Invention

This invention relates to cycling accessories, specifically to devices for securely retaining water bottles on bicycles. It aims to provide enhanced bottle stability via a vertically applied spring-loaded retention mechanism. read more

Signage Project – Rocky Branch Park

paschmann

There is something quite refreshing about volunteer work. Generally it’s a position or job which you have picked because you have expertise, passion or interest in learning more about. It is unpaid, and the external pressure and expectations you get from a paid position are generally non-existent.

While I have had, and do, multiple volunteer jobs for one of the parks in the Tarheel Trailblazers organization, taking on new responsibilities is rewarding from a knowledge building perspective. This role was centered around designing, installing and maintaining a mountain bike/hiking parks signage. The project included the main entrance information boards, way finding, and safety signs. read more

Drawbot

paschmann

A fun project to build a drawing bot which uses linear motors, belts, and a servo to take digitized line art and physically draw it on paper, in a plotter like fashion. Here are a couple resources which are helpful.

https://drawingbots.net/knowledge/tools

One of my intentions is to draw golf course layouts and their corresponding contour lines, this site has the relevant height lines.

https://anvaka.github.io/peak-map/#12.39/35.20202/-81.03753

Process:

Use a Inkscape extension to convert SVG to line art: https://github.com/love-open-design/LY-Drawbot-Tool-by-LOD

LY Drawbot – Workflow

Inkscape SVG -> Object to Path (If needed) 

Extensions -> Generate GCode for LY Drawbot read more