Photon water tank sensor

2015-10-05 20.32.19

You might have read my earlier tutorial on how to measure your rain water tank with an Arduino. If you haven’t, this tutorial is based on that one and will assume some ground knowledge from that post. I’ll try to link back as much as needed to let this make sense. The Arduino worked perfect for a while, but it became a hassle to check the level under the stairs, a sensor connected to the internet made much more sense. That way, you can receive warnings when the level gets low or very high, and you can respond accordingly. I used a Particle Photon, a $19 internet-connected development board to achieve this, connected to IFTTT to quickly switch between outputs.

Arduino water tank sensor


All new Belgian homes are outfitted with a rain water tank (een regenwaterput, as we call it) these days. Which is a really neat way to save on water, since you can use it for things like flushing toilets or even washing clothes. However, at some point after a dry period, that water tank runs out and in our case that means our toilets are flushed with mud (I know, I should clean the bottom of my pit). Knowing when it’s close to running out on beforehand is quite handy and with an Arduino and ultrasonic sensor, you don’t have to go through the trouble of opening the water tank and looking inside for a rough estimate.

My week on Joylent

2014-10-11 12.36.48

Disclaimer: This post was written quite a while ago. Since then, Joylent has stepped up their game massively. They added a bunch of flavors, shipping is way faster, the powder comes in pretty bags, powder is much less grainy, etc etc. So if you find any dealbreakers in this post, chances are they have been updated since then.

Maybe you’ve already heard about Soylent, the American food-alternative that promises a quick, cheap way to gulp down all the nutrients you need. All you have to do is shake together their powder and water, until you have 2 liters of yellowish goo that replaces your 3 meals for a day. It’s been making a lot of waves in the media, with a bunch of people who think food is a necessary evil and love the idea, but also lots of people who think it’s ridiculous and hate it. I’ve seen The Verge review Soylent and one of them actually lived a full month on nothing but these shakes. Here’s a quick video of their experience:

Raspberry Pi Media Center

2013-07-07 09.35.49-2

People have been finding the coolest ways to use a Raspberry Pi, the 35 dollar computer that’s been driving the geeks wild for a while now. I myself turned it into a media center and taped it to the back of my TV, making it easy to play movies and TV shows I legally bought of course.

I’m completely new to Linux or Raspberry Pi in general, so I’ve been gathering knowledge from lots of tutorials and articles. I figured that people would be interested in a tutorial on this, so I’ll have a go myself.

Dropbox & Google Adwords

2013-12-08 19.53.59

In een vorige blogpost ging ik reeds dieper in op het Dropbox platform, deze keer een leuke tip om het ten volle te kunnen gebruiken. Zo krijg je in een standaard Dropbox-account 2GB ter beschikking om bestanden online te bewaren, te delen en zelfs samen te werken. Dat is voor het bedrag dat je ervoor betaalt (niks!) een mooie deal, maar als hij vol staat is het steeds vervelend om je map op te ruimen. Zeker als je het ook binnen je bedrijf gebruikt voor het delen van bestanden, staat hij nogal eens snel vol (vaak met bestanden die uiteraard van niemand zijn). Mits een avondje tijd kan je het echter eenvoudig opdrijven naar 10GB en meer, met behulp van Google Adwords. Ik probeerde het uit en geniet nu van 10,25GB ruimte, zonder een eurocent betaald te hebben, ik deel graag met jullie hoe ik het aanpakte.