Taste The Code

Reading a Solar Boiler Water Level Probe with an ESP32-H2

How a common solar boiler probe reads water level and temperature with just four wires, and how I turned it into a Zigbee tank controller.

Oct 10, 2026 — 8 mins read

How I Repaired a Dead Mitsubishi Colt Dashboard Display

I brought a blank Mitsubishi Colt dashboard screen back to life by cleaning off old resin and soldering chip pins loosened by years of heat cycles.

Sep 25, 2026 — 8 mins read

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