Atomic Clock Trades Receiver for an ESP8266 - The advantage of a radio-controlled clock that receives the time signal from WWVB ... - https://hackaday.com/2025/04/07/atomic-clock-trades-receiver-for-an-esp8266/ #microcontrollers #atomicclock #clockhacks #radioclock #simulator #esp8266 #wwvb

Wake, Boot, Repeat: Remote OS Selection with GRUB and ESP - What do you do when you need to choose an OS at boot but aren’t physically near yo... - https://hackaday.com/2025/03/03/wake-boot-repeat-remote-os-selection-with-grub-and-esp/ #networkhacks #linuxhacks #wakeonlan #esp8266 #network #linux #boot #grub #http #esp #wol

+++ Sysop News +++ Sysop News +++

So I'm still investigating the connectivity issues I witnessed with #rc2014bbs and here are my current findings:

1.) while the telnet listener of the #Zimodem firmware is no longer open on port 2014, the #wifi of the #esp8266 itself is still active and the reserved ip is responding to ping requests.

2.) once the firmware gets reset via ATZ it sometimes restarts /re-opens the listener on port 2014

3.) the listener dies a few hours after initial powerup of the system

4.) my memory may be failing me but those issues began somewhere around autumn last year when I updated the firmware to version 3.7.1

As a result of these findings, I have reverted the firmware on the esp8266 to Zimodem version 3.6.5. It's not an official release - I checked it out using the corresponding commit hash.

The BBS was powered up with that version yesterday at 09:00 am and it is still running about 24 hours later, which was never the case with the 3.7.1 version of the firmware. I've also noticed a few other glitches not being present with the 3.6.5 version.

It is still a little too soon to call the problem solved, but there's movement here.

Also keep in mind that RC-BOX BBS (the world's first and - currently - only #rc2014 based #bbs) is using a wifi connection so other sources of influence may also have an effect on connectivity (although they never were *that* worse before 3.7.1).

Sending out the first +3 WiFi card + software soon :-) Let me know if anyone else wants one :-) #zxspectrum #retrocomputing #esp8266

Hi all. I built a WiFi card for the +2A/+3/+3E. If anyone is interested in one, please leave your name here - https://spectrumcomputing.co.uk/forums/viewtopic.php?t=12942

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Using the ESP8266 for Low-Cost Fault Injection - As a general concept, fault injection is a technique that studies how a system rea... - https://hackaday.com/2025/01/15/using-the-esp8266-for-low-cost-fault-injection/ #voltageglitching #faultinjection #securityhacks #toolhacks #esp8266