TLDR: Built a USB HID device on STM32 BluePill to wake headless servers after power loss. What started as an Arduino project evolved into a cleaner libopencm3 implementation, teaching us when direct hardware access beats abstraction. The Problem: Server Wake After Power Loss Power outages are a headache for server rooms. While servers can automatically
TLDR: STM32’s flash protection requires a specific sequence of key registers and timing considerations to unlock. This guide explains the practical steps needed for FPEC unlock, option byte access, and handling the power cycle requirements. The STM32’s flash protection operates through a sequence of key registers and timing requirements. Here’s what you need to understand
TLDR: It doesn’t work I have some Maxeon Sunpower C60 Cells at home. So not a whole panel, but the individual cells. They have contacts at the bottom, are flexible, and are very efficient. But also very big, so I tried cutting them. Settings used: 100% power = 20W @405nm diode laser 20
TL;DR: PlatformIO offers a complete toolchain, libraries, makefile and IDE integration Making a new microcontroller work is hard. You need to get a feel for the surrounding community and the way the manufacturer imagined them to work. PlatformIO solves all those problems and more. What you get is: the toolchain package management for libraries makefile
TLDR: I cut my blades using a chainsaw This happened a year ago. I never posted it because i “wanted to do it right and give good documentation”. But i think some pictures are better than nothing. Theory My goal is to cut 3 blades from the collected wood. Each blade is tapered. This means
TLDR: Set the waterpump’s power over wifi I’m using a Siemens Micromaster Vector to continuously drive a waterpump. This way, i can change the frequency and with this the power usage. Unfortunately, the inverter is placed in a wet hole together with the pump and i don’t want to climb down to change the frequency.