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Mail Notifier - WiFi Edition

After around 18 months of using my previous mail notifier the mobile network provider that I was using, ASDA, decided to move from EE’s network to Vodafone’s network. Unfortunately, the A9G GPRS ...


RouterPi - A Compute Module 4 Router

Another Raspberry Pi router! I’ve been wanting to use a Raspberry Pi as my home internet router for a long time, but previous versions were not quite up to scratch. I needed two ethernet interfac...


IoT and a Door Entry System

I recently moved into a two-floor apartment with a door intercom system on the bottom floor for the building lobby area. Since I’m normally upstairs I wanted to have some way of being able to unl...


Raspberry Pi – Compiling a Module for the 64-bit Kernel

Recently I’ve been working on a network router using the Compute Module 4 and a custom base board with a Realtek RTL8111H PCIe Ethernet controller. Raspberry Pi OS doesn’t come pre-installed with t...


Repairing a Samsung HT-C460 Home Cinema System

My Samsung HT-C460 home cinema had started to go into protection mode – it would display “PROT” on its screen and turn off after a few seconds. It’s an old cinema system with a DVD player that hasn...


AVR-GCC 12.1.0 for Windows 32 and 64 bit

This is where I’ll be uploading builds of AVR-GCC for Windows 32 and 64 bit, which will also include Binutils, AVR-LibC, AVRDUDE, Make and GDB. I’ll be trying to keep the builds up to date with the...


Raspberry Pi 4 PCI-Express Bridge “Chip”

After seeing the work done by Thomasz Mloduchowski and Colin Riley with managing to bridge the Raspberry Pi 4’s PCI-Express bus to a USB 3.0 port, and then seeing these comments on hack-a-day, I th...


Smart Power Bank Keep-Alive

Ever wanted to power a project from a USB power bank, only to have it keep shutting itself off because the current draw was too low? This project aims to fix that with these handy and slightly over...


Remote Mail Notifier (and GPS Tracker)

At the moment I’m living in a block of flats and my mailbox is in a central lobby area. I’m often receiving small surprise packets from China and never know when the postman has been, usually betwe...


Laptop Bench Power Supply

Many years ago (September 2009) I made a simple bench power supply using an LT1083 7.5A linear regulator with adjustable output voltage designed to be used with a 19.5V 3.42A laptop power supply. I...