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Geoff’s blog

Where Geoff Johnson (AKA Hoagie) puts random stuff.

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Posted on September 27, 2017September 19, 2017

Really Simple Raspberry Pi Logic Analyser (Digital Oscilloscope)

The source here is an extremely simple 2 channel Logic Analyser. It shows two digital signals like an oscilloscope would, but its extremely simple and easily extendable.

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Posted on September 24, 2017

EGX

As a spare time game developer and casual game player, I took a trip to the EGX show this weekend and came to a distinct conclusion.

Continue reading “EGX”

Posted on September 20, 2017September 19, 2017

Command Line Android Uploads on a Mac

I The main takeaway from this post is that you can use Fastlane Supply to upload Android APK files to the Play store on a Mac with exactly the same scripts as on Linux.
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Posted on September 13, 2017September 13, 2017

Android Play Store uploads from the command line

Having sorted out command line builds for a Unity3d Android application, I wanted more. Here’s the procedure to upload new builds from the Linux command line. I’ve also tried to arrange it so that in the future I’ll be able to use the same source tree to build iOS versions and install those too.
Continue reading “Android Play Store uploads from the command line”

Posted on September 11, 2017September 13, 2017

Command line builds in Unity3d

I’m working on automating the builds of my Android apps made with Unity. So far, I can build from the command line, here’s how. Continue reading “Command line builds in Unity3d”

Posted on September 5, 2017September 5, 2017

Scratch Ultrasound Room Scanner

I’ve discussed driving a stepper motor and ultrasonic distance sensor in previous posts. In this one, I’ll bring it all together and outline the Scratch based ultrasonic room scanner. Continue reading “Scratch Ultrasound Room Scanner”

Posted on August 30, 2017September 3, 2017

Getting WordPress to work on Debian based systems.

I followed the numerous tutorials on getting WordPress working on a Debian based Linux box. I’m doing this on Raspbian on a Raspberry Pi, but I expect the same gotcha to apply to all distros. The problem is the Cant Create Directory message when updating or installing themes and plugins.  Continue reading “Getting WordPress to work on Debian based systems.”

Posted on August 28, 2017August 28, 2017

Raspberry Pi Ultrasonic Distance Sensor with Scratch (Kind of)

Back in part one, I described a project involving an ultrasonic distance sensor mounted on a stepper motor, all controlled with Scratch on a Raspberry Pi. Here, I’ll describe the sensor.

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Posted on August 28, 2017August 28, 2017

Raspberry Pi Scratch Stepper Motor Control.

A few days ago I created a project in Scratch on a Raspberry Pi 3. The plan was to mount an ultrasonic distance sensor on a stepper motor and have it scan the room drawing a picture of the room as it went. In this part, I’ll talk about the stepper motor and how it’s controlled.

Continue reading “Raspberry Pi Scratch Stepper Motor Control.”

Posted on August 28, 2017

1st Post.

Yay, I got first post. But I guess I’m bound to with this being my blog.

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