Taste The Code

Inside the SLZB Ultima: Radios, Add-On Modules and IO Pins

Taking apart the SLZB Ultima 3 gateway to see how it runs Zigbee and Thread at once, and investigating what it really can do.

Sep 13, 2026 — 12 mins read

FNIRSI LPM-10 Review: Testing Every Function of This Network Cable Tester

Testing every function of the FNIRSI LPM-10 network cable tester, from wire mapping and length measurement to tracing a single cable through a ceiling.

Sep 05, 2026 — 10 mins read

Building a Standalone RFID Door Lock with the RC522 and an ESP32

Building a standalone RFID door lock with the RC522 and an ESP32 that learns and forgets cards using a single push button.

Aug 31, 2026 — 13 mins read

Monitoring Temperature, Humidity and Air Quality with the BME680

Building a wireless environment monitor with a BME680 sensor and an ESP32 running Tasmota, sending temperature, humidity and air quality data over MQTT.

Aug 15, 2026 — 9 mins read

Repairing a Weather Station Without Replacing Parts

A brand new RS485 weather station arrived completely dead, and the fault turned out to be one solder joint that looked perfect but carried no current.

Jul 29, 2026 — 11 mins read