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The C Shore

Dead Code

Daniel F. Dickinson's Personal Tech Blog

Preface

Daniel F. Dickinson’s personal tech blog. It contains only technology articles — primarily ad-hoc articles written for the sake of interest and potentially helping others.

Section Contents

  1. Web/Mail Hosting
  2. Self-hosted Infrastructure
  3. Ancient History
  4. News of the Dead Code
  5. Development
  6. Hardware / Firmware / Kernel / Rootfs

2020-01

2019-12

2019-11

2019-10

2019-09

2019-07

2019-06

2008-11

2004-05

1998-01

Security Policy Change Broke Contact Form (Again!)

Dec 22, 2019 16:25 EST
The contact form got broken (again!) by a security policy change in the underlying OS for this site. That’s been fixed and I’ve added alternate contact information in case more breakage occurs. Which of course means there won’t be more breakage.

Fixed Contact Form Issues

Dec 10, 2019 03:22 EST
Due to changes in Hugo the contact form generation was no longer correct. The site has been updated fix that.

Raspberry Pi as an Ansible Server

Jan 30, 2020 08:38 EST
As a base service for bare metal infrastructure I prefer my provisioning and configuration management servers to be bare metal which can be accessed without requiring other hosts or infrastructure. For small deployments the Raspberry Pi makes a great choice because it is inexpensive, uses little electricity, takes little space, and yet has enough power for the relatively low demands placed on the server (which also makes a full x64 server overkill).

Raspberry Pi as a Server

Jan 18, 2020 15:14 EST
For small deployments (or home or small office use) you may find yourself in need of a 'bare metal' server, but not want or need the expense of an x64 machine. If the workload is not too demanding, a Raspberry Pi can be a good choice. The Pi has the benefit of being inexpensive, using little electricity, and taking little space.

Additional Information: Module 1, Part V

Mar 1, 2020 23:58 EST
Module 1 Skipped or Simplified Material, Part V Outputs A GPIO pin designated as an output pin can be set to high (3V3) or low (0V). Inputs A GPIO pin designated as an input pin can be read as high (3V3) or low (0V). This is made easier with the use of internal pull-up or pull-down resistors. Pins GPIO2 and GPIO3 have fixed pull-up resistors, but for other pins this can be configured in software.

Easy Button

Mar 1, 2020 23:58 EST
Easy Button Sadly our easy button is not as easy as the Staples® easy button. Hardware Keep the LED connected. Adding a Button Positioning these buttons correctly is rather tricky. Don’t worry. If you end up with the button turned the wrong way, all that will happen is that it will act as if it was always pressed. If that is what you are seeing, just rotate the button a quarter of way around.

Using Buttons to Get Input

Mar 1, 2020 23:58 EST
Using buttons to get input Now you’re able to control an output component (an LED), let’s connect and control an input component: a button. Connect a button to another GND pin and GPIO pin 2, like this: Create a new file by clicking New. Save the new file by clicking Save. Save the file as gpio_button.