Sending incoming call info to MQTT

I’ve used Asterisk at home since around 2004, originally using a clone of a Digium FXO card and later a Sipura SPA-3000 (later owned and branded by Linksys) to interface to my landline. When that server decommissioned itself (with a bang and bad smell) a year or so ago I switched over to the Asterisk based FreePBX on a […]

Switching Voice Notifications To Ivona

I had long used the unofficial Google speech API for voice notifications (TTS) as it has a very good, clear voice, much better than Festival which I had used previously. However late one night a couple of months ago this stopped working as Google started to redirect it to a captcha if you tried access it directly. […]

Letterbox Notifications

This was a quick project to add notifications for when I get real physical mail. This is something I’ve had on my mind since I made my first SMS doorbell notification system back in 2004 and I finally got around to it last month. First of all I picked up a cheap internal letterbox flap and fixed that […]

Wireless Sensor Battery Life 3+ Years On

I last blogged about this in December 2013 when the second version of my ATmega328 & DS18B20 based temperature sensor, installed on 29 December 2011, had just reached the 2 year mark on the original set of batteries. That’s pretty good going and I’d have been happy with that but how long would it last until those Energizer batteries […]

X10 and Home Easy with Node-RED

This is part of a series of posts I am doing describing some of the things I have been doing as part of the revamp of my home automation system. When I started on the home automation road in 2002 I began with a kit of 3 X10 modules and a CM12U PC interface which I […]

TinyTX & Tiny328 Sensors with Node-RED

Node-RED is currently taking the IoT world by storm, described as “A visual tool for wiring the Internet of Things” it is built on top of Node.js and is an open source project developed by IBM employees. It makes it easy to link various inputs and outputs adding simple or not so simple processing in […]

Tiny328 – A mini wireless Arduino clone

So here is the reason for the last couple of blog posts. This is my first venture into designing an SMT board and apart from the practice run I did with some breakout boards it is the first time I’ve attempted to solder anything as small as a TQFP package or the tiny 0603 passives (1.6 […]

Experimenting with the nRF24L01+ 2.4GHz radios

I thought it was about time I did a post on the testing I did with the nRF24L01+. This low cost transceiver IC from Nordic Semiconductor works in the 2.4GHz ISM band and you can find boards based on this chip very cheaply indeed, I picked a pair up on ebay for 2.89 USD including […]