Subj : Re: Serial to IP adaptors
To   : Nigel Reed
From : Bob Worm
Date : Sun Feb 11 2024 22:28:29

  Re: Re: Serial to IP adaptors
  By: Nigel Reed to Bob Worm on Sat Feb 10 2024 20:20:25

Hi, Nigel.

 > Yeah, I got some of those from Amazon, really cheap and easy to make. You'll
 > need an Arduino to easily program the ESP with the specialized modem
 > firmware. Not sure if you can do it with a rpi.

I just compiled zimodem straight onto it with the Arduino IDE - worked great.

Unfortunately after an extended BBS session via it last night my A3020's serial port has now stopped working, I'm not sure if it's related or not. The ESP/MAX232 combo is still working fine when I plug it into other computers and the voltages are well within spec.

I should say that fixing the A3020's serial port was pretty much the first thing I had to do when I started work on it - the line driver chip had died in the Tx direction. I bought two new old stock replacements, which were the only 2 I could find anywhere, and one of them was a dud so possibly they're quite fragile. This time it's died on the Rx direction. Sad times, I pretty much can't do anything on it without a serial port :(

BobW
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