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zimodem's Introduction

Noisy Zimodem

Noisy Zimodem is an ESP32 with Zimodem firmware by Bo Zimmerman https://github.com/bozimmerman/Zimodem (thanks to Bo for his fantastic work) to which I added a TTL-RS232 interface converter, a PCM5102 DAC and a mini LM386 to play sounds.
handshaking and dial tone sound is inside source code and the result, who can you see in this video, is very similar an old fashioned modem.
Zimodem light and sound


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License

This work is licensed under a Creative Commons Attribution 4.0 International License. See https://creativecommons.org/licenses/by/4.0/.

zimodem's People

Contributors

na103 avatar

Stargazers

avatar TurBoss avatar John Clark avatar mark audacity avatar avatar

Forkers

john-clark

zimodem's Issues

ESP32 hangs in a startloop when binary flashed

Dear Sir,

I compiled the files you provided with Arduino IDE.
It seems, there are missing libraries not mentioned.

So I tried to flash the binariy file with flash_download_tool_3.9.4

I´m unsure witch adress to be used.
So I tried 0x0000 as well as 0x1000 or 0x800.
None of them work. Using a serial terminal,
I was able to see, that the "WatchDog" bites.

Would you be so kind and provide a bit more
information? It would be great to bring your Idea into
work.
20230605_213321

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