Mastodawn

電車ベクトル (Train Vector):

Software post is now online. 3rd & final post about the current version 2.

Job of the SW: Read 2 analogue inputs, averages signals, calibrates itself at startup, applies thresholds + hysteresis, remembers the last valid direction (using by a state machine) & switches the headlights accordingly.

The optional functions are not in use. I want to wait until feedback from the train club testing this project.

Link to the git:
https://gitea.togo-lab.io/tgohle/0004-DenshaBekutoru/src/branch/master/firmware/ArduinoTest/DenshaBekutoru-0004_Version-0-2_ProMini_PCB2026-2_V01

#電車ベクトル #TrainVector #ToGoLab #BrickTrains #ModelRailway #Arduino #Electronics #Projects

電車ベクトル (Train Vector): The Software – togo-lab.io

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togo-lab 3d ago

電車ベクトル (Train Vector project): Hardware description:

The main board reads the noisy motor signal of a brick-built model locomotive directly from the H-bridge controller, isolates and processes it & controls the headlights.

There are also a future option board & a detachable test circuit (4 LEDs).

Blog, describing the schematic & showing the PCB:
https://togo-lab.io/?p=233

Gitea (schematic, PCB):
https://gitea.togo-lab.io/tgohle/0004-DenshaBekutoru/src/branch/master/KiCad/0004-DenshaBekutoru_v0.2

#電車ベクトル #TrainVector #ToGoLab #BrickTrains #ModelRailway #Arduino #Electronics #Projects

togo-lab 3d ago

Finished my 電車ベクトル (Train Vector) project:

A Arduino-based board will detect the driving direction of brick-built model locomotives directly from the noisy H-bridge motor controller & switches the headlights automatically.

Sounds simple, but due signal noise, switching artefacts & inductive (reverse) spikes direction sensing is quite hard.

Schematics, PCB, and firmware for beta (version2) finished & working.

Three PCBs were built & tested & the first 2 boards are now handed over for real-life testing in a model railway club.

Blog:
https://togo-lab.io/?p=223

Gitea (Schematic, PCB):
https://gitea.togo-lab.io/tgohle/0004-DenshaBekutoru

#電車ベクトル #TrainVector #ToGoLab #BrickTrains #ModelRailway #Arduino #Electronics #projects

togo-lab Jan 10

Today I pushed my 1 GB VPS over the limit by running #Nextcloud, #Matrix, and #Gitea for togo-lab.io and adding #ClamAV AV scanning as an experiment. It crossed the line due too much load during scanning, and my system crashed.

Maybe you’ll find my post-mortem useful.

https://togo-lab.io/?p=190

#togolab #tgonet #postmortem #selfhosted

Post-Mortem: Antivirus Integration on a 1 GB Nextcloud VPS (failed due load) – togo-lab.io

togo-lab Jan 5

🎉 The TōGō-Lab Matrix server is now live and open for productive use 🎉.

It is a self-hosted Matrix instance, dedicated to discussions around my hardware projects, design ideas, and experiments in addition to Git & TōGō-Lab blog.

Public lobby (entry point):
https://matrix.to/#/#lobby:togo-lab.io

There is also a broader, non-project-specific space on matrix.org (for family & friends, non project things): https://matrix.to/#/#TGONet_Lobby:matrix.org

If you’re already using Matrix feel free to join or have a look at my landing page: https://tgonet.de/

#Matrix #SelfHosted #DIY #OpenSource #TGONet

You're invited to talk on Matrix

togo-lab Dec 26

Edge Dec 26

I want to be able to do this SO BADLY.

Laughed right out loud.

#DIY #WoodWorking

https://www.youtube.com/watch?v=eMYWVKd0ar0

MILK CRATE - stop motion woodworking

YouTube

togo-lab Nov 5

DL0TUH Nov 5

📡 Zwischen Chaos und Technik:

Der Norddeutsche Funktag am 03.01.26 an der TU Hamburg ⚓

https://dl0tuh.de/funktag/

#amateurfunk #amateurradio #zendamateur #norddeutscherfunktag #nf26 #39c3

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togo-lab Oct 25

Today I worked on my remote control GUI for the SDG2042X.

This project is now becoming usable for my test bench: Did some bugfixes, added configuration file, path settings (screenshot and pre-saved Settings) and, most important, context-sensitive input fields that depend on the waveform.

But the GUI still in a very early stage, at example, the ARB management isn't really working yet, that's still on my to-do list.

& yes, the GUI is ugly as hell, but at this stage of the project, the functionality is more important to me.

Blog: https://togo-lab.io/?p=130

Gitea: https://gitea.togo-lab.io/tgohle/0003-SDG2042X-PyQt-GUI-for-Linux

#SDG2042X #DIY #python #testbench #TestEquipment

togo-lab Oct 25

jaseg Oct 21

I've got a new paper out on eprint: Monitoring tamper-sensing meshes using low-cost time-domain reflectometry.

In the paper, I wrote up how you can build a ~200 ps resolution time-domain reflectometer from an STM32 and some cheap display bus redriver ICs. The circuit is sensitive enough to distinguish several identical copies of the same test specimen PCB from manufacturing tolerances!

blog post: https://jaseg.de/blog/paper-sampling-mesh-monitor/
paper preprint: https://eprint.iacr.org/2025/1962

#electronics #embedded #security

togo-lab Oct 20

Joe Pasqua Oct 20

I got a BMOW FloppyEmu for my #Apple IIc and made an insert to expose it in the 5.25" drive opening. This prototype is pretty close to the final version. I just need to tighten a couple of tolerances and I'll be happy.

I extended wires for the buttons and the display from the FloppyEmu board and used a microsd extender to bring that out to the panel.

The IIc itself needed only minor repairs to get running from its original Flea Market condition.

https://www.bigmessowires.com/floppy-emu/

#retrocomputing

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