The following software is all personally authored and free for public use unless noted otherwise.

PGP/SSH public keys are kept securely at ardnew.com/keys, backed up here on GitHub at ardnew/keys.

Pull requests, criticism, and donations welcome. No refunds.

Each repository is assigned a subjective color code (㏄) to indicate its status and general quality. See Color Code for definitions.

Go

Modules

㏄	Repository	Documentation	Description
🟦	ardnew/mcp2221a		Go module for the MCP2221A USB to I²C/UART Protocol Converter with GPIO
🟦	ardnew/ft232h		Go module for FTDI FT232H USB to GPIO/SPI/I²C/JTAG/UART protocol converter
🟦	ardnew/ipseq		Go module to parse and iterate over IPv4 address intervals
🟦	ardnew/lsi		Go module to follow elements of a file path
🟧	ardnew/version		Go module to easily embed semantic versioning compliance with change history
🟧	ardnew/oibot	--	Go package for controlling iRobot Create 2 robots using Open Interface (OI) specification

Shell integration

Utility

㏄	Repository	Command	Documentation	Description
🟦	ardnew/roster	roster		Check which files have changed using configurable directory index file
🟦	ardnew/ipseq	cmd/ipseq		Print IPv4 addresses in ranges similar to seq from GNU coreutils
🟩	ardnew/lcpre	lcpre	--	Determine the longest common prefix among multiple strings (e.g., common ancestor directory)
🟦	ardnew/lsi	cmd/lsi		Follow elements of a file path similar to namei from util-linux
🟦	ardnew/svngrab	svngrab		Export, merge, and package paths from SVN repositories per YAML configuration file
🟦	ardnew/erro	erro		Echo formatted text to stderr
🟧	ardnew/wslpath	wslpath		Convert between Windows and Linux file paths in WSL
🟧	ardnew/mkgo	mkgo		Create a Go main module using template source file

Build Tools

Raspberry Pi

TinyGo

Microcontrollers (board support)

Core (machine, runtime)

import "tinygo.org/x/drivers" (peripheral drivers)

Arduino

STM32

Perl 5

Bash

Delphi

Projects

Wireless LED Strip Controllers/Drivers

Two separate projects for implementing a wirelessly-controlled LED strip using Bluetooth Low-Energy (LE):

Blixel — General-purpose wireless LED strip controller for Android mobile phones/tablets

Android mobile device -to- Arduino-driven LED strip

Designed for Android mobile devices, implemented using an Adafruit ItsyBitsy nRF52840 and a 300-pixel (5 meters) RGB LED WS2815 strip.

Instead of the commonly-found Bluetooth (LE) to serial UART string-based frameworks (hacks!), a custom BLE GATT protocol was designed as communication transport — which provides a rich, structured message framework for much faster (and more reliable) communication to transmit per-pixel and/or per-segment color information.

Currently supports several modes of operation:

• Color fill entire strip, partial strip (segment), or individual pixels
• Parameterized animation patterns (color wheel, theater chase, and fade/breathe)
• Optional motion-activated trigger (passive-infrared or doppler radar) with timer — great as a nightlight!

NeoCLUE — Real-time sensor-reactive wireless LED strip controller

Arduino sensor-based device -to- Arduino-driven LED strip

Similar to the Android-based project above, but implemented using a pair of Arduino-based Nordic nRF52840 devices.

Additionally, this project is designed to utilize the suite of environmental sensors embedded on the Controller (Adafruit CLUE).

For example, the user can control the LED strip color in real-time using the accelerometer (e.g., X, Y, and Z-axis mapped to the Red, Green, and Blue components, respectively, of the RGB-colored LEDs), gyroscope, magnetometer, air temperature, barometric pressure, humidity, light color, proximity, gesture sensor, or PDM microphone.

Various animation patterns (e.g., color pulse/fade using microphone audio levels, rainbow pattern with origin seeded by magnetic North, etc.) are also supported.

The onboard IPS LCD screen provides a rich GUI interface based on the LVGL embedded graphics library.

WiFi-Enabled Timecard

This software lets you select a project and an associated activity, then you can start and stop a timer that tracks how many hours you worked on that activity.

Designed for the Adafruit PyPortal, it takes advantage of the ESP32 WiFi module by automatically synchronizing local time with an NTP server. Additionally, time is tracked by logging to the internal SD card, making it easy to open and read from a PC when you actually submit your hours wherever. Alternatively, if your time-tracking system and the PyPortal are on a shared network, the software could easily be modified to submit your time automatically.

Color Code

Misleading Statistics