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Resin.io and the OpenPi

Introduction

Following on from a previous post on Using Redin.io with Node-RED I have been given a Wireless Things OpenPi device. This is based on the Raspberry Pi Compute Module and hence is a different beast to put software on compared to the regular Raspberry Pi models. The big difference here is that there is […]

Using Resin.io with Node-RED

I’ve been involved with Oxford Flood Network which is currently one of the showcase projects in the recently opened Digital Catapult Centre. For about a year now I’ve been using Node-RED, including developing the Twilio node for sending SMS. Node-RED is being used on the Raspberry Pi as a gateway between the sensor nodes and […]

Oxford Flood Network Sensor build

These are the first draft of the detailed build instructions for the V3 Oxford Flood Network river level sensor. The sensor uses an ultrasonic transceiver measure the distance from the sensor to the water. The changes in the water level are registered as changes in the distance measured. This can then be used to calculate […]

What to do with surplus dev boards

I’ve been using Arduino boards for a few years now and it re-kindled my interest in microcontroller systems after having worked in the field quite a few years ago. Since then I’ve also used various Arduino compatible boards, shields and d-i-y boards, I’ve created libraries, published code and generally had a lot of fun with […]

Over The Air Hackday challenge

I recently attended the Over The Air mobile development conference at the historic Bletchley Park, Home of the Codebreakers. This was a superb event including talks and hackday challenges covering a variety of categories. The challenge lasted just over 24 hours and in this time teams and individuals had to come up with something that […]

Using Node-Red with OpenRemote for basic home automation

I’ve recently been using a new tool that describes itself as “A visual tool for wiring the Internet of Things“. More details are available at their website http://nodered.org/. The idea is that ‘things’ can be brought together in a visual manner without any programming, although a little coding in JavaScript is needed in places. I’ve […]

Using Node-Red with Ciseco LLAP devices

I’ve been using the Ciseco wireless modules for a while now and after seeing Node-Red I wanted to use the Ciseco modules as both an input and output to the nodes. This post describes how to setup the Serial In and Serial Out nodes to use either the USB SRF Stick or the XRF and […]

Simple Wireless Display using Ciseco RFu-328

The Idea

For a while I’ve been tinkering with the Ciseco RFu-328 Arduino compatible wireless module but hadn’t done much with one. I’d obtained a pair of 1.8″ SPI TFT displays via an eBay seller in China that I had previously used with Arduino and mbed modules. The displays are driven using the Adafruit ST7735 […]

Custom PCBs for Ciseco SRF Wireless modules

After my earlier experience of designing and having manufactured my own PCBs, I found I’d like to do more. This time using the Ciseco SRF surface mount wireless module. The company provide the EagleCAD schematic and PCB footprint for the module so it is a case of building the PCB around these. I did a […]

mbed platform – FRDM-KL25Z

I’ve been using the mbed platform for a while now after receiving one to develop the IoT Gateway project. This was based on the NXP LPC1768 chip, the details can be found here. One of the downsides of this mbed was its price, even though the features are impressive for a microcontroller development board. Recently […]