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Arduino UNO R4 WiFi: Turn Two Official Examples into an NTP Clock on the LED Matrix
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Arduino UNO R4 WiFi: Turn Two Official Examples into an NTP Clock on the LED Matrix

Combine two official examples from arduino/ArduinoCore-renesas (LED matrix text + WiFiS3 NTP) into a compiling UNO R4 WiFi shelf clock. Covers the ArduinoGraphics include-order error, 2.4 GHz-only Wi-Fi, bridge firmware checks and demo-only habits. Includes an affiliate-disclosed eBay board link.

ArduinoUNO R4 WiFiArduinoCore-renesas +4
2026-11-04 03:09:17 75 0
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ESP32-S3-DevKitC-1 First Blink: Why the Official ESP-IDF Example Says GPIO38 (and When It's 48)
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ESP32-S3-DevKitC-1 First Blink: Why the Official ESP-IDF Example Says GPIO38 (and When It's 48)

Build Espressif's official esp-idf blink example on an ESP32-S3-DevKitC-1: the on-board LED is an addressable RGB LED on GPIO38 (v1.1) or GPIO48 (v1.0), plus variant, USB-port and Octal-PSRAM pin pitfalls. Includes an affiliate-disclosed eBay board link.

ESP32-S3ESP-IDFEspressif +4
2026-11-04 03:21:47 88 0
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Pico 2 W First Blink: Build Official pico-examples with PICO_BOARD=pico2_w
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Pico 2 W First Blink: Build Official pico-examples with PICO_BOARD=pico2_w

Build and flash the official raspberrypi/pico-examples blink target for Raspberry Pi Pico 2 W with -DPICO_BOARD=pico2_w (RP2350 + CYW43). Covers LED-on-wireless differences vs non-W boards, BOOTSEL flashing, and common CMake mistakes. Includes an affiliate disclosure linking a Pico 2 W listing.

Raspberry Pi Pico 2 WRP2350pico-examples +5
2026-11-04 03:27:21 61 0
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Stop Using Spark for Log Queries: I Built a Plug-and-Play Analytics Library with DuckDB in 20 Minutes

A practical guide on how to turn scattered CSV/Parquet files into an interactive analytics library using DuckDB in 20 minutes, covering installation, direct SQL queries, log analysis, and report export.

DuckDBData AnalysisPython Tutorial +4
2026-11-04 02:33:24 52 0
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How to Deploy a Private Mail Server with Mailu in 1 Hour (Docker, DNS & SSL Guide)
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How to Deploy a Private Mail Server with Mailu in 1 Hour (Docker, DNS & SSL Guide)

A step-by-step tutorial on deploying a fully functional private email server using Mailu and Docker. Covers Docker Compose setup, DNS configuration (MX, SPF, DKIM, DMARC), Let's Encrypt SSL automation, and Webmail access. Perfect for backend developers and sysadmins who want full control over their email infrastructure.

Docker Mail Server Self-hosted +4
2026-11-03 23:26:45 58 0
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How to Build and Deploy a Global Edge API with Cloudflare Workers in 15 Minutes
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How to Build and Deploy a Global Edge API with Cloudflare Workers in 15 Minutes

A practical guide for developers to set up a global RESTful API using Cloudflare Workers SDK (Wrangler), Hono, and TypeScript. Learn the complete workflow from local simulation to global deployment in zero-config environments.

ServerlessEdge ComputingCloudflare +3
2026-11-04 02:23:51 97 0
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