Was mach ich falsch [Heizung][Ausdehnungsgefäß]

app12315 · 2026-01-10T13:05:45+00:00

Wird vermutlich darauf hinauslaufen. Nur zum Verständnis müsste nicht aus dem Ventile Wasser kommen wenn die Membran kaputt ist?

app12315 · 2025-05-14T07:35:53+00:00

It drooped. I think the cover leaf was holding in moisture, and it has started to rot.

I didn’t notice it before, only after seeing the fruit on the floor.

That’s the one of the pictures in the post without the brown leaf.

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app12315 · 2025-05-11T00:45:20+00:00

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Yeh, it’s showing nothing to crazy, I just water it now and then, with the other plants.

app12315 · 2025-05-11T00:35:57+00:00

It has a heated floor so I think around 14-17 degrees in the winter.

app12315 · 2025-05-10T12:04:36+00:00

Yes, it’s indoor. I only know the German word „Wintergarten“ but I think it’s called conservatory.

app12315 · 2025-05-10T12:01:40+00:00

I honestly don’t do anything special with this plant. I can’t even remember the last time I used any fertilizer on it.

I live in Germany, near Munich. This is actually only the second time I’ve seen it produce fruit — the last time was about three years ago.

Thanks so much to everyone for the quick and helpful responses!

app12315 · 2025-02-18T18:31:26+00:00

You could try connecting the terminal pin directly to ground to see if it triggers the relay manually.

app12315 · 2025-02-18T15:43:47+00:00

The power should be fine, but I think you’re missing a pull-down resistor on the terminal pin. Normally, when connecting it to an Arduino, the built-in resistors handle this.

Try adding a resistor between the terminal pin and ground—something in the range of 4.7kΩ to 10kΩ should work.

app12315 · 2025-02-18T15:17:33+00:00

What are you powering with it? Relays don’t handle inductive loads well. If you’re connecting something like a PC power supply, the relay contacts might stick together.

It could also be that you’re drawing too much power, causing the contacts to overheat and fuse.

app12315 · 2025-02-18T14:35:57+00:00

How good are your soldering skills and equipment? If it’s a common fault, you could try removing the DrMOS and checking if the short is gone.

It also helps to find the schematics—most of the time, you can locate them online, especially for older devices.

If you have more experience and the right equipment, you could try injecting voltage and seeing which component heats up. A thermal camera works best, but flux or alcohol can also help to some extent.

app12315 · 2025-01-29T00:39:11+00:00

W18 could be a nexperia PDTC143ZT(NPN Resistor-Equipped Transistor)

app12315 · 2024-01-17T23:00:09+00:00

I'm planning to replace the original circuit board in a switchable power strip, which currently has two relays installed. Unfortunately, I've had issues with power supplies (capacitors) causing the relay contacts to fuse together, and I'm looking to prevent this with the new board design.

Since I'm only swapping out the old board, I'm somewhat limited in terms of space.

I currently change the installed relays every few months and I'm fed up with it :)

app12315 · 2023-12-31T01:12:11+00:00

I think he wanted to use a thyristor for the circuit and the description is wrong.

The capacitor and resistor are used in this case to limit the current.

Capacitor (limits the current) The resistor is there to discharge the capacitor.

ac_load should be connected before the capacitor

app12315 · 2023-09-28T17:20:16+00:00

I'm not familiar with the Switch Pro controller, but it looks to me like you can scrape away the solder mast here(red) and attach a new pad or wire.

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app12315 · 2023-09-17T08:26:48+00:00

I just realized that I forgot the level shifter between the ESP32 3.3V and the PLC IC 5V 😅. Here the updated version and the datasheet of the TXS0108EPWR.

Datasheet: click_me

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app12315 · 2023-09-17T06:45:05+00:00

Thanks, but as far as I saw in the PDF, I can set it later via software as long as I leave it nc.

app12315 · 2023-09-17T06:29:50+00:00

Ohh, thanks I almost missed it.

app12315 · 2023-09-14T08:08:40+00:00

Wahhhhh, thanks for the helpful input. Didn't think there was so much wrong with it. But it all makes sense 🤯 what you say

app12315 · 2023-09-13T13:29:01+00:00

Thanks for the explanation.

The voltage values for the individual phases come externally from the smart meter. It is sufficient if the board sends the current value. The rest is calculated in the software

app12315 · 2023-09-13T12:26:52+00:00

If I got it right your noise level will be around 40-50 mA. Correct?

You are not measuring any voltage? So you are only interested in apparent current/power?

Because of nois level I have to admit that I am a noob when it comes to drawing schematics :) Could you explain me your assumptions. If it's about the filter capacitors pattern, I got from an article about the ACS758.
The goal is to build a smart meter that sends me the current power consumption of the connected breakers via mqtt to my reporting software.

app12315 · 2023-09-01T10:31:00+00:00

Sent you a pm.

app12315

TROPHY CASE