Blog

Illustration of a DS3231 real-time clock module connected by four jumper wires to a green Raspberry Pi–style board with an on-board RTC backup cell, next to an analogue clock, with the heading “Raspberry Pi Real-Time Clock”.

Raspberry Pi Real-Time Clock (RTC): DS3231 Setup and the Pi 5’s Built-In Clock

William September 29, 2026

How to keep a Raspberry Pi’s clock right without internet: the Pi 5’s built-in RTC and battery, step-by-step DS3231 setup for older Pis, and a free drift calculator.

Illustrated comparison of an Arduino-style microcontroller board, an ESP32 Wi-Fi and Bluetooth dev board and a Raspberry Pi-style single-board computer, under the heading "Arduino vs ESP32 vs Raspberry Pi".

Arduino vs ESP32 vs Raspberry Pi: Which Board for Your Project (NZ Guide)

William September 29, 2026

Arduino, ESP32 or Raspberry Pi? A plain-English NZ comparison of specs, power use and September 2026 prices, with a free board picker to match a board to your project.

Blog

Raspberry Pi Real-Time Clock (RTC): DS3231 Setup and the Pi 5’s Built-In Clock

Arduino vs ESP32 vs Raspberry Pi: Which Board for Your Project (NZ Guide)

Quick Links

Contact Info