Stefan Gloor's Blog

Recently, I came across relatively cheap medical devices: consumer-grade pulse oximeters.

In this project, I started to reverse engineer payment card terminals because they seemed to be an interesting target for security research, given the high stakes involved.

What is ACME?

As part of my Bachelor’s thesis, I designed a novel DDR5 fault injection system used for Rowhammer research consisting of a custom interposer PCB, a microcontroller board and a control...

In this project, I analyzed and reverse engineered the firmware, file formats and custom cryptography of a business IP phone.

In this project, I use an nRF52 development board and a cheap 3.5" TFT module to experiment with graphical displays on Zephyr RTOS.

I stumpled upon schematics and an assembly drawing of my laptop (Thinkpad P14s, Gen 1) on a computer repair forum.

I own a 1994 IBM Thinkpad 755C I take out of storage once in a while to experience that authentic retro computer feeling with a system that predates my existence...

As part of a university course, I worked on porting a machine learning algorithm to an STM32 Cortex-M4 microcontroller for simple speech recognition.

While a chip vendor’s IDE (like STM32CubeIDE) offers many great features and is usually the easiest and quickest way to get the first program on a microcontroller, it is a...

As part of an operating systems class at university, we built our own, customized version of the Barrelfish microkernel/multikernel operating system running on an i.MX8X processor.

As part of a semester project I worked on integrating a firmware-based trusted platform module (fTPM) on a Arm-based SoC.

What do you do if you have a lot of work ahead of you and suddenly your servers are offline?

For an upcoming project I wanted to use my MSP430 Launchpad development board.

As my first FreeRTOS project I set up this simple demo on a TI MSP430FR4133 LaunchPad.

This is a breakout board I designed for the ultralow noise AD8331 variable-gain amplifier with internal low-noise preamplifier.

To get familiar with the tools and concepts of the Yocto project, I wanted to do a project using an SPI OLED display I bought recently.

This was a quick-and-dirty one day project.

Previously I have experimented with Linux single-board computers using pre-built Debian images and my own “static” images I built using buildroot.

It’s late at night, and you’re racing against the clock to print that last-minute document for tomorrow’s big presentation.

On my Gentoo machine I use QEMU, libvirt and virt-manager to host virtual guest systems.

I’d like to know what firmware is running on my Thinkpad.

Through a university course I got in contact with iCEBreaker FPGA development boards.

I wanted some insight why my laptop’s battery was draining so fast.

I created two LaTeX templates for reports or assignments.

I designed this industrial control unit while working as a freelancer.

I needed an ASCII table in a LaTeX document.

As a programming exercise I made a tool that automatically generates “focus” tests.

What is a Mandelbrot set?

Finally I got some time to read this book by Tariq Rashid.

Because I was experimenting with a neural network I thought it would be cool to have an even larger test- and training set.

I have always been fascinated by how networking devices work.

The controller drives dual-color (warm and cold white) LED strips.

This was a two-person school project in 2017/18.