willem.com

Cash on Willem's Blog

The Problem With Bitcoin

Everybody Wins

Dec. 9, 2024
Some thoughts on the long term viability of Bitcoin's rising value.

A few days ago the value of a single Bitcoin briefly surpassed $100K, a milestone that seemed unimaginable just some years ago. I wonder how durable the ever growing love for Bitcoin is. Let's have a closer look at the mechanisms underpinning the world's most famous cryptocurrency.

Business in a bag

Using a waterproof backpack to fit my gear

Dec. 22, 2018
After much testing I have selected a bag and set of cases to fit my entire business, wherever I go.

Over the past few months I have been testing different bags and cases to fit everything I need to run my business. As I commute by bike, the bag needs to be waterproof. The problem with waterproof gear is that it is usually very bulky. I need my gear to be both portable and representative, a challenge worth a blog post!

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.

Being a volunteer in Amsterdam-Zuidoost

Computer support in the local community center

Nov. 21, 2016
About my work as volunteer in the local community center in Amsterdam Zuidoost

After realising how lucky I am as an healthy, well educated, young man with a solid income, I wanted to do something for other people as volunteer. It just so happens to be that two years ago I received a flyer in my mailbox from the local community center: they were looking for someone with some knowledge of computers. A very interesting journey was about to begin!

Cash is king, or is it?

The wallet- and cash-less experiment

July 15, 2016
Is the time right to ditch the wallet?

Very often I see men carry a wallet filled with plastic: multiple debit and credit cards plus a bunch of loyalty programs and membership cards. Then, some even top it off with stinky paper money and sticky metal coins! It made me wonder if I can free up one pocket by ditching the wallet?

All blog posts
This case allows easy access to the payment card while hiding the ID inside.
This case allows easy access to the payment card while hiding the ID inside.
Access to accesoires from both sides of the
Access to accesoires from both sides of the "thing"
Just like any other iPhone: but this one has an NFC contactless bank card and ID hidden it it!
Just like any other iPhone: but this one has an NFC contactless bank card and ID hidden it it!
Programming on iPad Pro using VIM, Blink and a Linux VPS
Programming on iPad Pro using VIM, Blink and a Linux VPS
Peripheral case
Peripheral case "thing"
Cashback madness: imagine explaining this to your grandmother
Cashback madness: imagine explaining this to your grandmother
Ortlieb Urban: Textile appearance on the outside, polyurethane waterproofness on the inside
Ortlieb Urban: Textile appearance on the outside, polyurethane waterproofness on the inside
Typical alley in Venserpolder, Amsterdam-Zuidoost
Typical alley in Venserpolder, Amsterdam-Zuidoost
Hardgraft iPad Pro case with the keyboard folio and Apple Pencil
Hardgraft iPad Pro case with the keyboard folio and Apple Pencil
Yesteryear's speculative trading: The Dutch Tulip Mania
Yesteryear's speculative trading: The Dutch Tulip Mania
Adjustable straps without loose ends.
Adjustable straps without loose ends.
The wallet allows quick (and naked) access to the phone
The wallet allows quick (and naked) access to the phone
Me wearing the hardcore Ortlieb Velocity bag through bad weather, fantastic but a little bit bulky...
Me wearing the hardcore Ortlieb Velocity bag through bad weather, fantastic but a little bit bulky...
All I need to do my business - really!
All I need to do my business - really!
iPad Pro + Apple Pencil replacing paper
iPad Pro + Apple Pencil replacing paper
Feeling old already, my trustworthy old local area network (LAN)
Feeling old already, my trustworthy old local area network (LAN)
The iPad can be charged while tucked away in its case
The iPad can be charged while tucked away in its case
Music from the office cabinet - iPhone as a connected music player. Quite the solid rock show in combination with Apple Watch as remote.
Music from the office cabinet - iPhone as a connected music player. Quite the solid rock show in combination with Apple Watch as remote.

More Cash on Willem's Blog

All blog posts

Articles (158)