Does anyone have a multimeter at the conference ho...

# kotlinconf

[jw]

Does anyone have a multimeter at the conference hotel that I could borrow for literally 10 seconds sometime today after 3pm-ish or any time tomorrow?

[jw]

Or know a place in town that would have one that I could use? Or even a place to buy a very cheap one?

[Mark Rebhan]

The internet is telling me that there is a hardware store called jem & fix where you can buy one for under 100kr

[jw]

Thanks! I'll have a look later today.

[gsala]

Silvan should have them as well 👍

[tal]

I should have one somewhere at home and could bring it to the conference tomorrow, if you still need it.

[Matt Rea]

Can confirm - went to Silvan yesterday for a power converter and saw they had multimeters

[Ulrik Bech Hald]

Is this for the low voltage part of the smart light switch? 💡🤔😅

[jw]

Sorry I was traveling.

The switch only works with 100-120V, so I have a converter but I haven't tested it. It's probably fine, right? I have a backup so how about I test it here in an hour at the hotel and if it blows up then... I guess finding a better converter becomes top priority

[Ulrik Bech Hald]

If you have a 230V -> 110V converter I don't see why it wouldn't work. But good luck, I'll be there to see the light in action 🤞

[Mark Rebhan]

Worst case you blow the fuse on the AC to AC adapter

[jw]

I brought two converters, so one is bound to work. But I ran out the door without my multimeter so I could at least check it ahead of time. I'm sure SOMETHING will work.

[Mark Rebhan]

Yeah should be fine

[Shaun Burch]

Just don’t let the magic smoke out.

[jw]

🙊 👍

[jw]

The first converter wouldn't light my bulbs. The second one... is trying lol

PXL_20240522_161205580.LS.mp4

[Mark Rebhan]

Hmm, I wonder how the converter is working, perhaps it's chopping off the peaks of the sin waves which is why the lights are so dim.

[jw]

They're dimmable LED bulbs, which I thought would help me since it would have to step the voltage back down

[Mark Rebhan]

What would be better (and what we did at Orro for events without a reliable ac current) is to use a battery backup with a 120 AC plug.

[Mark Rebhan]

The batter we used would power the device and a led bulb for 1.5 hours

[jw]

I do need a new UPS at home. Could be my carry on

[Mark Rebhan]

I think because the signal coming into the switch is already dirty with the chopped off sign waves, the thing on the device managing the dimming against the AC current does not know how to handle it.

[Mark Rebhan]

I can ask an EE to confirm that, but that is my hypothesis 😂

[jw]

I turned off dimming, but the board is obviously still a dimmer. It sucks. When the light is 100% off it still gets a trickle. I was going to use Edison bulbs but they never went out!

[Mark Rebhan]

Hmm are you using a 4-way or 2-way circuit setup?

[Mark Rebhan]

I assume 4-way with a neutral wire

[jw]

Yes

[Mark Rebhan]

Yeah that's odd that the lights aren't turning fully off on the off position, I think it further strengthens my theory of dirty signal coming in

[jw]

That happens with US power

[Mark Rebhan]

Oh that's not ideal

[Mark Rebhan]

But yeah, I would say try with a battery backup that has a 120v AC out if you can get your hands on one somehow

[jw]

Haha uuhhhh I'll see. Still gotta finish slides first