ArduinoFDC is a sketch that implements a floppy disk controller. It works with Arduino Uno, Leonardo, Nano, Pro Mini, Micro and Mega.

ArduinoFDC consists of three parts:

• A library providing low-level functions to allow reading and writing disks at the sector level as well as low-level formatting disks.
• Integration of ChaN's brilliant FatFS library to provide file-level functions for reading and writing files and directories in a FAT (MS-DOS) file system and a high-level format function to initialize a FAT file system.
• An example sketch implementing ArduDOS, a (very) small DOS environment for browsing a FAT file system as well as a low-level disk monitor to access sector data on the disk, including the ability to transfer whole disks or single files via the XModem protocol.

ArduinoFDC works with double density (DD) as well as high density (HD) disk drives. It can read, write and format 5.25" DD (360KB), 5.25" HD (1.2MB), 3.5" DD (720KB) and 3.5" HD (1.44MB) disks.

RF tool based on CC1101 module and Arduino Pro Micro 8VMHz/3.3V. Allows using CLI to control CC1101 board over USB interface. Putty or any other serial terminal can be used. It has similar functionality to YardStick One but is cheaper and does not need specialized software. Allows for RF jamming and replay attacks as well. It has RAW recording/replaying function which works exactly the same as in the Flipper Zero. Additional function is Radio Chat communicator

You simply connect your Arduino Pro Micro (Arduino Leonardo clone from Sparkfun) to USB port of your PC and launch Putty terminal to communicate with CC1101 module over USB Serial port ( /dev/ttyACM0 port in Linux, COMxx in Windows).

The ATMegaZero is a microcontroller board based on the Atmel ATMega32U4 microchip, the same chip used in the Arduino Leonardo and Arduino Micro. It was modeled after the Raspberry PI Zero to take advantage of its sleek design and form factor but in the form of a microcontroller board. Similar to the Raspberry Pi Zero the ATMegaZero comes with 40 GPIO pins that can be used as input or output for interfacing devices and can be programmed using the Arduino IDE software. The ATMegaZero comes with a built-in USB which makes the ATMegaZero recognizable as a mouse or keyboard.

Two extant variants at this time: One based upon the ATMega32U4 (older) and one based upon the ESP32-S2 (newer) (CircuitPython compatible).

Desk-sized, affordable, open-source robotic pets. Right now there are only two, Nybble (robocat) and Bittle (robodog). Programmable and hackable. Can be customized and expanded with a little work. Can even be expanded with a RasPi and a little work for more on-board processing power. Can be controlled wirelessly over Bluetooth or wifi.

(Yes, the ending dash is supposed to be there.)

A Blue Box design that emulates classic Blue Box tones, plus 12 other historical tone modes. It produces 12 tone signalling systems used by phone phreaks to hack other more exotic system in the US and overseas, including early pre-cellular mobile telephone systems from the 50s, 60s, and 70s, including the classic bluebox and the DTMF suite. 12 memories of up to 32 tone sequences each. Sine waves from PWM.

Maybe make myself a con badge out of it?

This repository contains helpful resources to receive signals transmitted from an Arduino 433 MHz transmitter with an RTL-SDR receiver using GNU Radio.

The project consists of two parts. In the first part, we reverse-engineer the protocol. In the second part, we implement a real-time receiver.

A company that makes lots of specialized shields and hats for the RasPi and Arduino. Antennae, cellular radios, IoT modules, sensors, feedlines, connectors, adapters, and kits.

A directory of known Arduino shields.

A cheatsheet for the most popular microcontroller chips' pinouts, connection headers, and cable pinouts.

How to rig an Arduino up to play a simple melody through a piezo speaker.

This is a thing of beauty.

Fritzing is an open-source graphical application for converting a project prototyped with an Arduino into a PCB schematic for manufacture. Designed for people already familiar with Processing to do what they need to do easily. Cross platform: runs on Windows, OSX, and Linux.

A CC-licensed cheatsheet for building with and programming the Arduino.

A massive list of free-as-in-beer ebooks about programming: Languages, platforms, tools, and more. Ideal for teaching classes, continuing education, reference, and getting a jump start on programming in school.

Homepage of a kit that emulates an Altair 8080 system using an Arduino.

An /*duino/i shield which emulates an MOS 6581... the SID chip.

An open source DIY robotics/rapid prototyping kit much like an Erector set. Lots of standardized pre-milled bars, rods, connectors, and components. Build your own plotter, CNC machine, RepRap, scanner table, or what have you. Capable of three axes of linear motion. Comes with all the electronics you need, including an Arduino, stepper motors, and a motor driver board.

Plans for constructing an Arduino shield which lets you stack another Atmega 126 or 328 in master/slave configuration. Double the I/O pins, double the interrupts.