ATtiny
Arduino Crypto
Cryptosuite is a cryptographic library for Arduino (including SHA and HMAC-SHA)
Crypto-Arduino-Library - cryptographic library for Arduino. Includes symmetric encryption/decryption, hash and HMAC operations.
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AESLib - Arduino ready extract from the AVR-Crypto-Lib
Arduino Bootloader
Optiloader is a sketch designed for bulk upgrading of Arduino board bootloaders using another Arduino as a device programmer.
avr_boot SD card Bootloader for atmega processors
2boots is a proof-of-concept dual bootloader for Atmel AVR atmega chips. It combines a serial bootloader and a mmc/sd card based one in the same 2kb of flash memory that is normally used by the arduino serial loader alone.
TFTPBootloader starts a TFTP server on default UDP Port 69, and listens for about 5 seconds at startup. During this time the user can upload a new firmware using any TFTP client software.
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Arduino kompatible Boards
Arduino I/O / Multiplexing / Schieberegister (Shift register)
I/O
DAC
Arduino Power/Motor/Lüfter
Displays / LED
I2C
Schieberegister / Shift register
USB
Arduino Netzwerk
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ethercard - Ethernet Library for ENC28J60 based shields and breakouts
Agentuino is a lightweight Simple Network Management Protocol (SNMP) Agent library for the Arduino platforms supporting Version 1.
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Arduino TinyWebServer is a library implementation of a small web server running on an Arduino Duemilanove or Uno using the new Ethernet Shield
Arduino Programmierung
Cheat Sheets / Befehls Referenz
Programmierung mit avrdude
Bit Maths
Datentypen
Arduino Float to String (If you have ever tried to use sprintf() on an Arduino to convert from a float to a string, you will notice it doesn't work.)
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Watchdog / Sleep
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Arduino Sleep - Stromsparender Betrieb z.B. für batteriegestützte Anwendungen
Debuggen
Interrupts / Timer
Libraries
Arduino Pinout
Diverses
Speicher (RAM/Flash
Arduino Hacks
Arduino Links
Arduino RTC
Arduino Tutorials
Arduino Forums
Arduino Blogs
Arduino Projekte
Arduino Simulator
Simuino is an Arduino UNO/MEGA Pin Simulator. It comes in two versions: terminal and web.
Arduino Shell
Bitlash is an open source interpreted language shell and embedded programming environment for the popular and useful Arduino.
Arduino Troubleshooting