Rob Janssen

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Shelly: The device is already owned by another user/account

This post has two parts. The first part is most likely what you're here for: Getting rid of this stupid error. It turns out that is quite easy and I will explain in a second. The second part, however, is how this (apparently) happens, how Shelly deals with this issue and how Shelly exposed another customer's details to me. Read more »

Hack your Segway E110S / E110SE / E125S

We used to rent scooters from time to time because myself, the misses and the kids like to go for rides on sunny days. It didn't take long before we decided that keep renting scooters wasn't a viable option and that we should treat ourselves to our very own scooters. After doing some research, nerd as I am, we ended up buying two Segway E110SE's. Read more »

The DIYMore 18650 Battery Shield V3 su... isn't very good.

Earlier this week I was working on a project where I wanted to power some electronics with an 18650 cell. Because I needed 5V and 3.3V and an 18650 doesn't provide either I dove into my grab stock and came out with one of the "DIYMORE" battery shields I had in stock, ordered on the cheap from AliExpress when I stumbled upon them one day. So I put an 18650 in, soldered the electronics to the 3.3V and 5V rails, checked if everything worked and went on my merry way. Read more »

Using Data Protection in Entity Framework Core with Value Converters (v1.1)

This post is intended as an addendum on Mgr. Jiří Činčura's excellent post Using Data Protection in Entity Framework Core with Value Converters ( archive 1 , archive 2 ) . In it, he explains how you can use an Entity Framework Core ValueConverter to encrypt data before it being stored in the database and decrypt it when reading from the database. Read more »

Install Microsoft SQL Server on Debian

Short howto on how to best install MSSQL on Debian (bullseye). Based on Microsoft's documentation for Ubuntu . Read more »