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Costin Stroie edited this page Mar 1, 2019
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Arabell300 is an old school modem, Bell 103 and ITU V.21 compatible, working at 300 baud. It is build entirely aroun 77DB d Arduino Nano, featuring an Atmel AVR ATmega328P microcontroller, programmed using Arduino IDE.
The project started as proof-of-concept, the author was just curious to see how much power resides in the tiny 8-bit microcontroller, how minimal DSP functions could be implemented, how a basic AT-style dialog works and, of course, to see if it can really connect to real modems using some VoIP poviders. Well, it works... almost.