Tupps.com

Author: tupps

  • M5Paper Field Notes

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    I used the M5Paper to create a weather station display. The ESP32 listens to local UDP messages from the weather stations (local temp, wind speed & direction), and connects to MQTT server to retrieve various other details. I use the internal temperature sensor for internal temperature and humidity. The display updates various sections when new…

  • Why Django and Docker

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    As I progress with my Django projects, I have been looking to Docker to help build, test and deploy the project. Below I describe why I am using Docker, and in future posts, I will document how I use it locally and with AWS. When building a project, I have the following goals: 1) Reduce…

  • Detekt or ktlint for the Android Developer?

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    TLDR: Use Detekt, configuration is easy and you’ll get the static analysis benefits as well. If you are willing to change your project to match ktlint’s style it is a great choice, and avoids bikeshedding. To lint or not to lint?? Whether you choose to a linter or not can depend on your team and project. However…

  • Quick Link: iOS Device Network Sniffing

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    Any time I need to see everything your iOS device is doing this website lists the commands you need to call to get it working: http://useyourloaf.com/blog/2012/02/07/remote-packet-capture-for-ios-devices.html Of course secure communications are still encrypted but you do see that something is happening, and you get all protocols (not just http/https like charles).

  • Will upgrading SQLite speed your app up?

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    I saw the latest article by Eric Sink explaining the issues that he was having with multiple copies of SQLite running. His article mentioned that iOS is running 3.7.13 and the current version of SQLite is 3.8.4.3 and along with a bunch of other improvements it is ‘significantly faster’. Well sign me up, perfect for…

  • Quick Review: RFduino – Shrunk Bluetooth LE Arduino

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    RFduino is a miniature (23mm x 28mm) version of an Arduino that includes a Bluetooth LE radio. The devices are incredibly small and provides a subset of the io pins you get on an regular Arduino. The basic RFduino board costs just $23 which can make it cheaper to add into a project. The biggest…

  • Creating the Spy Screen Saver

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    The security guys at work love to find unlocked computers and ‘Hoff’ them, basically leave a browser open with a picture of David Hasselhoff. I decided to fight back and created the Spy Screen Saver. There are two ways to create a screensaver on MacOSX. One is using Quartz Composer which allows you to build…

  • Submitting information to JotForm from an iOS App

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    This basic example will show you how to get submit data to a JotForm form from an iOS app. JotForm makes it extremely quick easy to setup a form, and it provides all the backend support you need to manage that data. If you have a need to submit some data from an iOS app…

  • Receieve updates from a Red Bear Labs Bluetooth LE Device

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    In the previous two posts (Connecting to Red Bear Labs Shield with Core Bluetooth & Getting going with iOS and Arduino using Bluetooth LE) I sent data to the Bluetooth LE shield on an Arduino, turning lights on and off. In this post I will look at receiving information from the Arduino and Red Bear…

  • Connecting to Red Bear Labs Shield with Core Bluetooth

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    In the last post I had an iOS device connected to a Red Bear Labs Bluetooth LE Arduino shield. In that process I used the BLE framework from Red Bear Labs, which got everything going but a fair bit of device control code to end up in the UIViewController. In this example I will take…