Andreas SchweizerCitizen science discovery during a stellar occultation: Asteroid (5457) Queen’s has a moon!On September 4, Jan Mánek in the Czech Republic discovered a moon of the asteroid (5457) Queen’s during a stellar occultation. The…Nov 19, 2023Nov 19, 2023
Andreas SchweizerinClassy Code BlogBitmaps with rounded cornersWe were recently faced with the task of copying a bitmap onto another bitmap in a customer project. For the sake of aesthetics, the bitmap…Nov 17, 2021Nov 17, 2021
Andreas SchweizerinClassy Code BlogL2TP / IPSec VPN issue in macOS Big SurI’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…Sep 27, 2021Sep 27, 2021
Andreas SchweizerinClassy Code BlogVisualizing LoRa packets with an AD9364 based SDRI’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…Jul 24, 2021Jul 24, 2021
Andreas SchweizerinClassy Code BlogLoRa Sync Word Compatibility between SX127x and SX126xIntroductionJul 5, 2021Jul 5, 2021
Andreas SchweizerinClassy Code BlogObtaining the CE marking for an electronic deviceA manufacturer who wants to sell an electronic device in the European Economic Area is responsible for affirming the device’s compliance…Apr 20, 2021Apr 20, 2021
Andreas SchweizerinClassy Code BlogFPGA inventory depletionOne of our projects uses a Xilinx Artix-7 FPGA. At design time, we decided to use the XC7A35T-2CSG324I, the industrial version of the…Apr 16, 2021Apr 16, 2021
Andreas SchweizerinClassy Code BlogSharing an SPI flash memory between a microcontroller and a Xilinx 7 series FPGA with “MultiBoot”Many hardware designs contain an FPGA and a separate microcontroller. In our case of a camera design, a Xilinx Artix-7 FPGA is responsible…Apr 20, 20201Apr 20, 20201
Andreas SchweizerinClassy Code BlogAn energy-efficient BLE remote control with the nRF52In a recent customer project, our task was to prototype a remote control for a BLE device. The remote control should have two buttons to…Jan 31, 20202Jan 31, 20202
Andreas SchweizerinClassy Code BlogUpdating the Firmware on an nRF52 from another microcontrollerThe nRF52 series of Bluetooth SoC by Nordic Semiconductor combine a powerful ARM Cortex CPU with modern Bluetooth and BLE connectivity.Dec 12, 20191Dec 12, 20191
