I’ll describe in this blog post a specific issue I had when trying to connect to our company VPN from my Macbook Pro running macOS Big Sur, and how I was able to work around the issue, hoping that the information will be useful for somebody or at least helps…

I’ve read a lot about LoRa modulation recently but haven’t seen how an actual LoRa signal really looks like, so today, I’ve decided to set up an SDR and visualize one.

The SDR setup consists of an AD-FMCOMMS4 shield connected to a ZedBoard. …

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A manufacturer who wants to sell an electronic device in the European Economic Area is responsible for affirming the device’s compliance with the relevant EU legislation. The manufacturer puts the so-called “CE marking” on the device to declare compliance.

The “CE marking”

Interestingly, there’s no such thing as a “CE certification”. Instead, it’s…

One of our projects uses a Xilinx Artix-7 FPGA. At design time, we decided to use the XC7A35T-2CSG324I, the industrial version of the XC7A35T at speed grade 2. At that time, this chip was available in large quantities from major suppliers.

Since a week or so, the project is ready…

Many hardware designs contain an FPGA and a separate microcontroller. In our case of a camera design, a Xilinx Artix-7 FPGA is responsible for configuring and reading an image sensor and processing the image while the microcontroller, a Cypress FX3, provides the USB3 connectivity and application functionality.

USB3 video camera module prototype

This post discusses…

In a recent customer project, our task was to prototype a remote control for a BLE device. The remote control should have two buttons to send a small number of commands over BLE to a host device. …

The nRF52 series of Bluetooth SoC by Nordic Semiconductor combine a powerful ARM Cortex CPU with modern Bluetooth and BLE connectivity.

Nordic provides an extensive SDK and sample code for updating the nRF52 firmware from various sources. One option is to use a PC with a serial connection and a…

As a side project of our DVTI camera project, we’ve built a simple EXTA based on a cheap video wall LED panel with 32 by 64 LEDs. At ESOP 2019, a couple of people have asked how this EXTA works, so we’ve decided to put this information on the web.

In the previous part, we’ve started with the implementation of the CPU and added a first couple of instructions for branching. This time, we’ll add an ALU and a register file so that the CPU can actually perform a few useful calculations.

In the excel sheet with the instructions sorted…

Andreas Schweizer

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