Luc Bors Weblog

In the previous 3 posts, building towards the eProseed IoT Hackathon, I described how to setup your Raspberry Pi, and how to use the GrovePi sensors. The used example is a small weather-station that read temperature and humidity and shows the readings on a display. That is all very nice, however, the data remains local on the Raspberry Pi so there is nothing that we can do with this information from an 'enterprise' perspective. In this post I will explain how easy it is to send the data to whatever 'end point' by using a REST-JSON web-service. The Database Tables For this use case I decided I needed 2 tables. One to hold all my available sensors (yes, I know, I have only one) and one to store the measurements per sensor. The Webservice In order to store the data in the database tables I need to send it from the Raspberry Pi to the database. For that I use a simple REST/JSON webservice that has a POST method. I also implemented PUT, GET and DELETE methods, becaus...

In September (15th and 16th) we will be organising an IoT Hackathon together with Oracle. I preparation of that I will write several post here concerning IoT. This post gives you an Overview of Grove Pi sensors and some of the fun things that you can do with it. See also this two minute tech tip that is an intro to this post. The GrovePi+ Starterkit Connecting sensors to the Internet of Things (IOT) is really easy! No need for soldering or breadboards: plug in your Grove sensors and start programming directly. GrovePi+ is an easy-to-use and modular system for hardware hacking with the Raspberry Pi and the Internet of Things. Here is what the kit contains: The GrovePi+ Board 12 Grove sensors Grove cables for connecting the sensors to the GrovePi+ board. The following sensors and lights are in the kit: Grove – Sound Sensor Grove – Temperature and Humidity Grove – Light Sensors Grove – Relay Grove – Button Grove – Ultrasonic Ranger Grove – Rotary Angle Sensor Grove – ...

In September (15th and 16th) we will be organising an IoT Hackathon together with Oracle. I will write several post here concerning IoT, starting with this one where I tell you how to do the default setup of your Raspberry PI. See also this two minute tech tip that is an intro to this post. For configuring your raspberry Pi there are several options. I prefer to use a keyboard, monitor and mouse so I can actually see what I am doing. The Pi has several USB ports and also an HDMI port. So if you have a monitor, keyboard and a mouse available, you can plug those into your Raspberry Pi and you are all set. Connect to the power and the Pi will boot into an initial setup screen that allows you to select your preferred OS. That is of course only if you inserted an SD card in the Pi that contains the various available OS's. Select your preferred OS and click install so that the Operating System gets installed. After a short while, the installation is complete. Once the install h...