Canon Camera Lens Tester for repairing EF Lenses
Stumbling in (formerly ebay-) Kleinanzeigen I found a heavily abused Canon EF 100-400mm f/4.5-5.6 L IS for €150.Sounds cheap, but checking the images and reading the description relvealed a hard crash on concrete, smashing the EF bayonet ring and the inner mechanics.The seller was bugged...
Emulator Handheld – CubeGM ROM List Editor
Recently I bought one of these cheap emulator handhelds listed as RS36s on aliexpress and alike. The one I bought is called SF3500, was only about 30€ and came within a week. The handheld looks a bit cheap, but has a large screen and the...
[ESP32] WebFlasher in ESP-IDF
About half a year ago, I published a reimplementation of the ESP32 web flasher libraries.It is useful if you want to build your own web updater for your product or hobby project. Recently I built a simple sensor that reports to Grafana to monitor the...
[ESP32] WebSerial / WebUSB – another Rabbit Hole
In my recent post about accessing the bootloader via WebSerial, I only covered the common desktop and Chrome setups. While that covers my main use case, I still wanted to go a step further and use my mobile phone to flash an ESP32 via a...
[ESP32] Browser-based firmware image viewer and editor
While writing the title of that post, a cold shower ran down my back. Hell, what have I been doing lately? With a generous amount of GitHub Copilot credits, I’ve been sliding deeper into vibe coding. Or assisted coding. However you want to call it....
Dyson v15 Battery Notes
A friend handed me a dead Dyson battery, and I took a look just out of curiosity. That’s how most of my “14 days of staying up until 3 AM” adventures usually start.Not this time – this is just me documenting a few findings I...
[ESP32-PD] USB PD using ESP32 / Zigbee Crib
Backstory So it was the end of the year again and everything got decorated for christmas. This time I got an extra job to “make the illumination of the crib properly”. Great, I had some cool COB LED strips waiting for a proper use case,...
Flipper Zero got ISO15693 (NFC-V) support
Some time ago, I blogged about my work on Flipper Zero support for Toniebox figurine. It took a while to get it through, but finally the Flipper Zero Dev team accepted my pull request for the ISO15693 emulation. Why is this such a big deal?...
ISO15693 Block for AARONIA RTSA-Suite
As you might have realized, I use an Spectran V6 for my RF stuff and am absolutely happy with this unique device, not only because of it’s compact form factor or amazing looks. Also the software is absolutely great with a lot of decoders and...
Emporia Vue 2 Custom Firmware
About a year ago, I found myself on the hunt for energy meters compatible with my power distribution box and stumbled upon Vue 2 by Emporia Energy. This device, with its support for three primary phases and 16 individual subnets, intrigued me. One of its...