LED Matrix mit MAX7219 und ESP32 ansteuern

Aus der Krabbelkiste zur fertigen Smart-Clock: Wie ein kleines Winterprojekt mit einer Handvoll AliExpress-Modulen und einem ESP32 zur ultimativen LED-Matrix-Uhr “Dottie” heranwuchs.

#1088AS #74HCT245 #BME680 #DIYUhr #DS3231 #ESP32 #IoT #kicad #LEDMatrix #MAX7219 #ntp #OpenSource #Pegelwandler #PlatformIO #RTC #SmartClock #SmartHome #VEML7700

https://dirkwouters.de/led-matrix-mit-max7219-und-esp32-ansteuern/

Always fun looking at auth nameservers for NTP Pool https://bgp.tools/dns/pool.ntp.org

#NTP

ADS-B-Feeder, Teil 2: der NTP-Bug in fr24feed ist in 1.0.57 gefixt, nur anders als gedacht

Der NTP-Bug in fr24feed, der meinen ADS-B-Feeder wochenlang offline gehalten hat, ist in 1.0.57 endlich weg. Flightradar24 hat den kaputten NTP-Client nicht repariert, sondern rausgeworfen und die Zeitsynchronisation an systemd-timesyncd übergeben.

https://www.kernel-error.de/2026/06/08/fr24feed-ntp-bug-1-0-57-fix-timesyncd/

Why is it called "RFC 5905" when it could be called "The Time Tome"?

#ntp #rfc5905

🌗 Wifi Time:打造「偽 GPS」模組的技術實驗
➤ 當「超精準」遇上「WiFi 網路延遲」:一個硬體實驗的失敗告白
https://mitxela.com/projects/wifi_time
本文記錄了作者於 2020 年發起的一項未竟計畫。為了在室內 GPS 訊號不佳的環境下達成精準校時,作者嘗試利用 ESP8266 開發一款能模擬 GPS 輸出(NMEA 格式與 PPS 訊號)的「偽 GPS」模組,並透過 WiFi 同步 NTP 時間。儘管作者最終因受限於 WiFi 延遲抖動與 ESP8266 硬體限制而放棄開發,但文中詳細拆解了如何透過 NTP 封包解析、跨平臺大小端序(Endianness)處理,以及利用邏輯分析儀與 Sigrok 工具進行脈衝抖動監控的技術細節,為愛好者提供了寶貴的經驗參考。
+ 這篇文章精準地捕捉到了硬體工程師在「過度優化」與「實作可行性」之間的掙扎,即便是失敗的實驗,其過程中的技術偵錯邏輯依然非常迷人。
+ 對於想利用 ESP8266 進行高精度計時的人來說,這是一個很好的警示。Wi
#電子工程 #嵌入式開發 #NTP 協議 #時間同步
Wifi Time - mitxela.com

Fake GPS module using NTP over WiFi

No more accidentally installing #openSUSE without a #desktop! #Agama 21 adds a clear reminder during #install, plus a redesigned #software selection screen, #NTP configuration, and the option to disable remote installer access. #Linux https://agama-project.github.io/blog/2026/05/21/agama-21
Releasing version 21 | Agama

We know, we know. We skipped a blog post for version 20 and you may be wondering what happened. The

ho notato questa cosa nella mia rete e cercando (su #searxng ) ho trovato questo https://github.com/hagezi/dns-blocklists/issues/4400

server #ntp usati per il #tracking. Un'altra cosa allucinante da aggiungere alla lista

datadog.pool.ntp.org · Issue #4400 · hagezi/dns-blocklists

Which domain(s) should be blocked? 0.datadog.pool.ntp.org 1.datadog.pool.ntp.org 2.datadog.pool.ntp.org 3.datadog.pool.ntp.org datadog.pool.ntp.org Why should these domain(s) be blocked? NTP server...

GitHub
This USB storage from the #OpenBSD #NTP server is completely cooked. Let’s hope the next USB device lasts a bit longer #SanDisk
A Certified Nonprofit Transformation Partner (NTP) (https://zurl.co/sW78r) is an internal capacity-builder who helps a nonprofit translate operational needs into implemented, sustained improvements in workflows, data practices, and tool adoption. Get Certified today.
#NonprofitTransformation #NonprofitRole #TransformationPartner #NTP #NonprofitInnovation
til #QEMU VMs lose clock sync after suspend/resume or reboot if the #NTP daemon doesn't restart cleanly.
#virtualization