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Outside the comfort zone: amateur acting

Wearing an heart rate monitor during my debut performance

Apr. 18, 2018
This month I strapped myself with sensors during a little experiment outside my comfort zone: I debuted as amateur actor!

This month I made my debut as amateur actor. I am no Hollywood star, nor do I envy to become one. But I do like crazy experiments and operating outside of my comfort zone often leads to new and refreshing insights. I took part in an amateur drama play and - in the name of science and fun - strapped myself with sensors to measure what happened to my body.

Cyber security: 5 easy tips to protect your server against hackers

Server hardening best practices for Windows and Linux

Mar. 10, 2018
These 5 practical cyber security measures will improve the safety of server, website and data.

This week one of my clients was hacked and asked me for emergency assistance to help secure their server infrastructure. It was a web server that ran WordPress websites on Apache (with PHP/MySQL), including a few webshops with customer data. This hack could easily have been prevented with the following best practices, is your server secure?

Collecting health data with Biostrap

Wearing a clinical-grade photoplethysmography (PPG) sensor for a month

Nov. 15, 2017
Wearing a clinical-grade PPG sensor for a month to collect advanced biometrics from my wrist.

Most wearables (smartwatches, fitness trackers, etc.) use very basic sensors to capture heart rate. Their signal is binary: just counting beats. Biostrap is different, instead of just checking pulses, it captures a high-fidelity PPG waveform. These waveforms are the same kind that doctors use, making me wonder what I could learn from them!

Clouds below my floor

Building a little datacenter in my basement

Aug. 31, 2017
Building a little datacenter in my basement utilising a very fast internet connection.

At my home I have this crazy fast optical internet connection. It is a 600MB up and down fibre connection which directly arrives in my home (no copper cables involved). It's like a private internet highway. Reason enough to find out if I could do something to make better use of all this speedy fiber galore...

The day I killed my LAN

Turned off my local network and went 4G only

July 31, 2017
I killed my office LAN and went 4G only. Saves a lot of clutter, energy and money.

Today I called my provider to quit my office's ADSL internet subscription, I don't need it anymore. I have turned off my local area network and switched my workflow onto mobile internet only. The simplicity and savings actually surprised me so much, that I made blog post for it.

Smartwatches vs Mechanical watches

Why I still wear mechanical and why smartwatches have potential

Apr. 30, 2017
Why I still wear a mechanical watch and why smartwatches have potential.

Technology has come a long way since the first computer. Smartwatches today are very much an achievement of miniaturisation of technology. I recently used an Apple Watch Series 2 to find out if technology has come far enough to replace my mechanical watch, today I share you my findings.

One year of cycling

GPS recording an entire year of bike rides using Garmin and Strava

Dec. 31, 2016
GPS recording an entire year of bike rides using Garmin and Strava.

One year ago I started recording all my bike rides, including commutes, short grocery trips and long Gran Fondos. I equipped my bicycles with Garmin Edge computers that recorded location (GPS), speed, cadence and my heart rate. I covered more than 7683 kilometers during 320 hours of riding. It's time to review all the data and share some photos I took along the ride!

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The LG G Watch running Android Wear
The LG G Watch running Android Wear
Feeling old already, my trustworthy old local area network (LAN)
Feeling old already, my trustworthy old local area network (LAN)
Charging and listening to music simultaniously using an Apple Lightning dock
Charging and listening to music simultaniously using an Apple Lightning dock
Biostrap it's pretty much just like a Swatch, light on the wrist because of it's material: rubber and plastic.
Biostrap it's pretty much just like a Swatch, light on the wrist because of it's material: rubber and plastic.
Flyer announcing the play
Flyer announcing the play "Zusters in Zaken" by "De Opregte Amateur"
The Apple Watch Series 2
The Apple Watch Series 2
Different styles thanks to the different watch band options
Different styles thanks to the different watch band options
This photo was taken during a ride through the forest near Hilversum. The nearby trees really give you a sense of speed (and reason to stay focussed on steering straight...)
This photo was taken during a ride through the forest near Hilversum. The nearby trees really give you a sense of speed (and reason to stay focussed on steering straight...)
One of my nightly rides went through the McDrive - bikes are welcome, apparently :-)
One of my nightly rides went through the McDrive - bikes are welcome, apparently :-)
Apple Watch on the wrist showing current temperature, time, heart rate and access to mail, messages and music
Apple Watch on the wrist showing current temperature, time, heart rate and access to mail, messages and music
Playing drama is a team effort - and the on stage interation is what makes it fun!
Playing drama is a team effort - and the on stage interation is what makes it fun!
On the bottom you can see the two red LED's and the PPG sensor. Just like the Swatch Sistem51 movement this is hidden when worn on wrist
On the bottom you can see the two red LED's and the PPG sensor. Just like the Swatch Sistem51 movement this is hidden when worn on wrist
Part from the script with my first few lines of text, me playing
Part from the script with my first few lines of text, me playing "Gerard"
Comparing data from sleep analyses (two nights with clearly a different pattern)
Comparing data from sleep analyses (two nights with clearly a different pattern)
Heatmap of my bike rides in the Amsterdam area.
Heatmap of my bike rides in the Amsterdam area.
Biostrap sensors size compared to an Apple AirPod
Biostrap sensors size compared to an Apple AirPod
Charging Biostrap is easy - Battery lasts up to 5 days
Charging Biostrap is easy - Battery lasts up to 5 days
Check upon your server regulary - or find somebody that does this for you.
Check upon your server regulary - or find somebody that does this for you.

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