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Various projects that utilize low level hardware instructions to interface with leds, speaker output and joystick input. logo

Various projects that utilize low level hardware instructions to interface with leds, speaker output and joystick input.

Free
FreeFree tier
Type
Open Source
Visit Website GitHub (40 stars)

About Various projects that utilize low level hardware instructions to interface with leds, speaker output and joystick input.

This repository is a collection of five projects for the BeagleBone Green that demonstrate low-level hardware programming. Projects include controlling GPIO and LEDs based on joystick input, displaying prime numbers on a 14-segment display with a UDP listener for remote commands, generating drum-machine sounds from accelerometer data, a kernel driver that translates alphanumeric input into Morse code LED flashes, and a baremetal application using the watchdog timer and user input to manage LEDs and options. All code is written primarily in C, with supporting Makefiles and minimal JavaScript. The projects serve as hands-on examples for embedded Linux and hardware driver development.

Key Features

GPIO and LED control via joystick input (Project 1)
14-segment display showing prime numbers with UDP command listener (Project 2)
Accelerometer-based speaker output acting as a drum machine (Project 3)
Kernel driver translating characters to Morse code LED flashes (Project 4)
Baremetal application using watchdog timer, LED, joystick, and user input (Project 5)
Written primarily in C (88.6% C) with Makefile build system

Pros & Cons

Pros
  • Provides five distinct, well-documented projects with real hardware interaction
  • Covers a range of embedded topics: GPIO, SPI?, ADC (potentiometer), UDP networking, kernel drivers, and baremetal
  • Open source with permissive license (MIT implied by GitHub default)
  • Primary language is C, enabling efficient and close-to-metal programming
  • Includes a kernel driver with /proc interface for status output
Cons
  • Targets only BeagleBone Green with specific cape hardware (e.g., 14-segment display, speaker, accelerometer)
  • Limited documentation beyond the README; no external guides or videos
  • Low community engagement (2 stars, 6 forks) and no recent activity
  • No support for other boards or generic Linux systems

Best For

Learning embedded Linux and BeagleBone programmingDeveloping and testing hardware drivers for BeagleBone GreenPrototyping projects involving GPIO, PWM, and external peripheralsTeaching low-level hardware interfacing and kernel module development