telnetd (a micropython telnet server)

Full-featured telnet daemon for micropython

How to install

1. Grab the telnetd.py file
2. Put your own password (instead of "pass") onto the 3rd last line; t.telnetd('pass')
3. Upload telnetd.py (or telnetd124.mpy) to your / or /lib folder
4. To run it, first start your network, then import telnetd

This program emits ANSI terminal codes, so it's best used with a good terminal program like SecureCRT or PuTTY.

You can have as many connections at once as you like - all of them connect to the same REPL at the same time, all input and output goes to everything at once.

Connection and Disconnection etc messages show in yellow on the top line of all terminals (to hopefully not interfere with whatever else you're doing at the time in other sessions)

You can also do t.telnetd(t._chkpass('create','mypassword'), ip='192.168.1.123', port='10023') if you only want it on one IP, or need to change the port.

If you're low on space and using MicroPython v1.24.*, you can use the telnetd124.mpy (optionally renamed to telnetd.mpy) file instead, as follows:

 import telnetd124
 telnetd124.start('mypassword') # accepts ip="0.0.0.0" and port="23" options too

Watchdog option

Create the empty file /wdt.up to tell telnetd that it must do a wdt.feed() every 15 seconds, and it will reboot your MCU if anything causes this to stop responding after 3 1/3 minutes (which is enough time to upload new firmwares etc)

Bootlog option

Create the empty file /telnet.log to tell telnetd that it must also send a copy of all console output into the file /telnet.log (stops writing after 4096 bytes)