Subj : Re: Serial to IP adaptors
To   : All
From : Nigel Reed
Date : Sun Feb 11 2024 21:01:24

On Sun, 11 Feb 2024 22:28:29 +0000
"Bob Worm" (21:1/205) <Bob.Worm@f205.n1.z21.fidonet> wrote:

>   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
> --- SBBSecho 3.20-Linux
>  * Origin: >>> Magnum BBS <<< - bbs.magnum.uk.net (21:1/205)

That sucks. I remember trying to find a UART - or as we called them
Unavailable async transceiver :)

Check with Retroclinic. If Mark doesn't have them I'd be surprised.
-- 
End Of The Line BBS - Plano, TX
telnet endofthelinebbs.com 23

.