I finally found some time again to build some LoraWAN Arduino toys for TheThingsNetwork. Basically it’s just a temperature sensor measuring outdoor water temperature and sending it once in a couple of hours via TTN to my Node-Red install. I’ve used the RN2483 library from JP Meijers which works great. I use an Arduino Pro […]
LoRaWan Gateway – DIY
This post will describe how to build your own LoRaWAN gateway to connect to i.e. The Things Network or other IOT Networks. If you haven’t heard about the LORA technology and TheThingsNetwork and you are interested in Internet of Things, do some googling 😉 You’ve probably found this article because you are looking for a […]
RF 433Mhz to MQTT Gateway
I’ve upgraded my domotica setup with a Philips Hue. Before I switched the lights using a remote control or via Node-Red and using the cheap 433 Mhz wall outlet switches of Elro, Klik Aan/Klik Uit, Action, and so on. Since the install of the Hue I was missing the remote control to easily switch the […]
Mohio – Visualize your Cloud
I’m a big fan of Evernote and sometimes I just go through my notes, notebooks and tags to clean things up. Sometimes I then just check Google to see if people have good suggestions related to what I’m doing. In this case, I came across a site called moh.io where you can connect some of […]
Mac OS X – write images to SD Card with
Updated 2018: Just download Etcher which works like a charm. Although the below still works! Writing SDCard images using my Macbook took way to long, up to half an hour to write one simple Raspberry Pi image to a SDCard. I just did what many instructions told me to do. You will probably recognize this command: dd if=/path/to/image/file.img of=/dev/disk3 bs=1m […]
Limit SD Card writes on Rasberry Pi usin...
A SD card has a limited amount of writes it can handle. The Raspberry Pi will write to log files a lot and reduce the lifetime of your SD Card. Update 3-2-2016: RamLog seems not to be compatible with Debian Jessie. I haven’t tried it yet but I have found a blog that might offer […]
Raspberry Pi Open Monitoring Distributio...
Post updated 29-11-2019. Checkmk is now owned / created by Tribe29. Check_MK has been renamed to checkmk. I haven’t used checkmk for a while, so the code examples below still contains the old name: Check_MK. Read the manual, google and find out for yourself if the commands are still valid or that you have to […]
Polyes Q1 – The safest , Cool-ink 3D Pen
On Kickstarter I found a nice project. The Polyes Q1 3D pen! Polyes is the first 3D printing pen with blue light and real inks. Using this pen you can draw objects in 3D space. The ink is hardened using an UV or Blue led light. They offer all kind of inks, from colored inks […]
Ingocraft 3D Printable construction kit
I found a nice project on Kickstarter.com, Ingocraft 3D printable construction kit and 3D modeling App. The Ingocraft construction set combines hands on making with a fun 3D modeling app, and is 3D printable for customizing your kit. I really like the approach of having an App to learn designing, an out of the box […]