Triggering Node-RED events with drawings

Yesterday I visited PrimeConf and, while entertaining my daughter with free biscuits, had a chance to talk to people from Bareconductive and Aestheticodes. At first I didn’t even look at Astheticodes, not quite knowing what watercolour images of carps have to do with… …anything, really. However, when Tony explained the principle behind their [...]

Play Minecraft via MQTT and Node-RED

As man flu stopped me from doing any “meaningful work” this weekend, I took the opportunity to have a play with the Minecraft Python API for the Raspberry Pi, especially since on Saturday I’ve had a refresher course at the Cambridge Raspberry Jam (CamJam) with the very Craig Richardson, who maintains a great [...]

Ciseco ARF/XRF Range Test

Ever since I started using Ciseco XRF radio modules for wireless communication, I’ve been fascinated by the possibility to connect even remote corners of the house to the internet; areas where we have neither power sockets nor WiFi coverage. The theoretical range of the 868 MHz signal reaches into the kilometres under ideal [...]

Node-RED Interoperability Test

After a few months of working with Node-RED, I thought it was about time to give something back to a great community. I decided to document my search for a good Internet-of-things platform on the web and the steps I had to take to make Node-RED talk to them.

Please find [...]

On-the-fly GPS visualisation through Node-RED

After I’ve had @ceejay and @hardware_hacks send me code examples for putting geographical coordinates onto Open Street Maps or Google Maps, I feel I should at least publicly document how I’ve gone about it in the end.

I’m receiving JSON sentences through a serial-in node in Node-RED. These are already well [...]

Turning a Nook Simple Touch into a wireless screen

At the recent ARM IoT Hackathon my closest competitor Ajith Shadakshari presented a hardware hack that utilised a Nook Simple Touch e-reader device as a low-energy wireless screen to dynamically display room occupancy, as informed by a data stream. I’m usually not one for hardware hacks as it is quite simple to [...]

Open IoT hackathon

On Friday 7th March technology company ARM hosted a hackathon, sponsored by the Technology Strategy Board (TSB) IoT Ecosystem Demonstrator competition. The IoT research branch of ARM along with and others collaborate in the @OpenIoTProject in the exploration of connected IoT systems. Part of this exploration was the hackathon, where various data [...]

AirPi speaks NodeRED

Introduction and general workflow described below. Fixing an issue about Xively flooding thereafter.

One of the success stories for young enterpreneurial spirit sparked by the Raspberry Pi is the AirPi. After this open-source open-hardware 8-sensor air quality and weather station originated in a student competition to help ‘others [...]

My first steps building something useful

So far in this not very frequently updated personal/technical – the “hobby” – section of my blog, I’ve shown some first steps with the Raspberry Pi and an example how we use cheap microelectronic devices to monitor the temperature of our lab equipment. I’ve grown quite fond of Ciseco, an English Internet-of-things company [...]

Paper Odyssey

(quick apology to my readers – I can’t seem to convince WordPress to consider my paragraph settings) In March there was a buzz in our lab. After a long period of number crunching, finally we were able to provide the first biological interpretation of data coming out of our GRiP stochastic simulator, shedding light [...]