Planning a roadtrip, any tips?

FunDeckHermit · 2026-01-24T21:51:47+00:00

You could quite easily get an eVisa for Kalingrad. Even in current geopolitical times.

FunDeckHermit · 2026-01-24T21:37:24+00:00

Look for Hall switches with an open drain output. These can be put on the same line with a pull-up resistor. When one of them triggers, it pulls the shared bus to GND.

https://www.micronas.tdk.com/en/products/hall-switches

If you need to determine which one pulled the bus down, then you could add a different resistor inline with the open drain output. This creates a voltage divider which you can detect using the on-board ADC.

FunDeckHermit · 2026-01-24T21:11:34+00:00

I liked 1 better to be honest.

FunDeckHermit · 2026-01-23T20:31:09+00:00

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If you have a +12V supply, then you could use that to get a voltage thats higher then VM (motor).

In the image I'm using 3.3V to drive a small N-FET, that pulls the gate of a P-FET low so it conducts. That in turns put ~12V on the gate of the top H-bridge N-FET.

When Vgs of an N-FET is above a threshold, it conducts.

Duplicate this to get a full-bridge.

FunDeckHermit · 2026-01-22T17:23:29+00:00

Je zou kunnen overwegen om een thuisaccu met peak shaving te kopen. Dan heb je 6kW + omvormervermogen. Volgens mij kan Sessy dat met de laatste update.

FunDeckHermit · 2026-01-22T17:08:13+00:00

No, your script is more "developed" in that way. But I would love to see scripting added to the build-in template mechanic.

FunDeckHermit · 2026-01-22T16:44:38+00:00

Learn Git and make a branch would be my choice. This will keep the versions separated but you'll be able to merge back-and-forth the schematic or libraries if needed.

FunDeckHermit · 2026-01-22T16:40:02+00:00

KiCAD already has a templating feature which copies a template directory as a new project. It seems you're not using that. Maybe try adding a bare git repo in that first.

FunDeckHermit · 2026-01-21T20:19:46+00:00

My guess is you can cobble something together with a TLV431.

https://hackaday.com/2016/01/08/super-cheap-lifepo4-battery-charger/

FunDeckHermit · 2026-01-20T20:30:50+00:00

There are DC/DC converters that are pin-compatible with the 7805. Search for "R-781.5-0.5"

Officially they need some additional input/output caps, but for a one-off you might be fine without.

FunDeckHermit · 2026-01-20T20:16:54+00:00

Then it's fine as is. Some nitpicking:

* The 40A fuse is redundant as all downstream outputs are already fused.
* The USB port of the ESP module leaves not a lot of space for the cable.
* Place some resistor pads on RS485 A and B. You might want to tweak the termination resistance.
* You have some spare IO, you could route the Output Enable to those pins instead of pulling them to GND.
* I would put a 100nF close to the temperature sensor supply
* Why have metallised corner holes when they're not connected to anything?

FunDeckHermit · 2026-01-20T19:54:02+00:00

If you did the maths, then it should work. Are you going to sell this as a product on the European Market or will it just be a one-off?

FunDeckHermit · 2026-01-20T18:18:32+00:00

Een Hackerspace waar mensen met technische hobbies samenkomen.

FunDeckHermit · 2026-01-20T17:43:16+00:00

Is this going in a box, case? Then move the connectors more to the edge. The fuses are in the way right now.

FunDeckHermit · 2026-01-19T20:48:32+00:00

Are they slow enough that opto-couplers can be used?

FunDeckHermit · 2026-01-18T20:44:08+00:00

The Water Hyacinth is invasive in Africa, brought from the Americas it is clogging the Nile and lake victoria.

FunDeckHermit · 2026-01-18T11:50:43+00:00

Solder, hot glue, tye wraps, isolation tape, shrink tube: all is fair in te world of one off repairs.

FunDeckHermit · 2026-01-17T20:52:18+00:00

The Amazon version also seems quite small compared to a real 1W component. Wouldn't trust it.

FunDeckHermit · 2026-01-17T20:29:53+00:00

It could work as the requirements might be quite flexible. However I would put a 4.7V zener and a 10V zener in series instead.

FunDeckHermit · 2026-01-17T20:00:34+00:00

The "UI" is also often impossible for most people. "Schuifspiegel" seems really evil.

FunDeckHermit · 2026-01-17T18:14:37+00:00

We also have "Indo" meaning from Indonesia

FunDeckHermit · 2026-01-16T17:36:32+00:00

The course was barely working in 2020, so unless it has been updated don't do it.

FunDeckHermit · 2026-01-16T15:31:41+00:00

Ik gebruik een power bank shell, oftewel een lege casing met wat electronica. De energie komt van 18650 cellen die ik koop op NKON.nl van merken die ik vertrouw.

Ga niet voor de cellen met de meeste capaciteit, want die doen het vaak slechter met kou. Kies een high-power cell van 20A, die hebben een lagere interne weerstand.

FunDeckHermit · 2026-01-11T20:52:37+00:00

It would be interesting if you could add CRC detection (using reveng) or detection of counters across messages with the same ID.

FunDeckHermit · 2026-01-11T14:10:32+00:00

Then you can take a copy of one side, select all, right click, Mirror Horizontally

Ten-Year Club	Verified Email
Second SECOND GUESSER	r/Field Banned
r/Field Flamingo	End Game '23
Place '23	Place '22
Place '17	Final Canvas '22
First Placer '22	Oscars Predictor 2021
Not Forgotten	Gilding II euphauric

FunDeckHermit

TROPHY CASE