240V lithium DIY.

I saw this and thought I hope that's a emergency light not a lipo charger... 3.6v led 0.6v diode 4.2v clamping of capacitive dropper.

Zach Allin

Damn, I thought the LED was a buzzer... *sad me*

Joelle Seguin

I was thinking LDR too. He has one from that crow/raven thing.

Robert Sanges

yeah thats the one with some led pcb boards and some 0.5w leds

The video is back up. YouTube randomly released it as public before it had even finished processing. (It was uploaded as private to allow editing.) Dave, is it the clamp meter and induction unit you sent? I've got a mound of stuff here that reappears for videoing in random order.

Big Clive

Power (mains) fail alert? I can't really tell what the component that's hanging off the end, but it doesn't quite look like an LDR, so I was thinking piezo noise (er, "beep") maker. Also, I couldn't figure another use for the lithium, unless it were to provide power when mains goes out. (hummm. When I made this post I only saw the 2 above me back to James Gillard. After reloading the page, I got the earlier posts and I see another surmising the same function as I did. GMTA? 😊 ) Or, that mystery hanger-on-er an LED. I can see that as another possibility. Either way, the board looks like it probably senses mains outage and then does X.

Same - kicking back after dinner with a cuppa and Clive. Had to reboot computer halfway through (bloody updates!) and when I came back the video was gone :(

John Carr

great job seen half the video then it vanished lol did you ever find a use for the leds and board i sent you and have a look at the multi meter i sent you thanks

It's similar, but not quite there.

Big Clive

LDR (light dependent resistor)? dusk till dawn sensor

<a href="http://www.toricrash.ca/images/guess1.jpg" rel="nofollow noopener" target="_blank">http://www.toricrash.ca/images/guess1.jpg</a> That's my guess of the circuit.

Joelle Seguin

Yeah I'm with you Chay.. It basically looks like one of those LDR style night lights, only with a crude charge circuitry, a 1 W LED, and a sense resistor instead of an ldr to me... but The reflection on that component at the end of those 2 wires is kind of hard to determine exactly what it is since it's so white

Possible &gt; 1w white led, so presumably an emergency light, or mains rechargeable torch?

I would agree with Aaron and others on this, it looks like a mains indicator alarm. It comes in with a FULL BRIDGE RECTIFIER!, a smoothing capacitor, a diode to protect(/charge?) the battery, a transistor with some components to drive the buzzer, and an oddly placed zener diode... maybe to regulate charging? Or to limit voltage to the buzzer, which feels odd to me...

Joelle Seguin

Some kind of audible notification of a power outage?

here's hoping it does "an alsatian"....goes woof

Phil Maddox

or the light intensity show the battery level briefly then go bang

Phil Maddox

Absolutely no idea, but it better go Flash Bang....

Ian James

I note that the plug earth pin has been connected and the earth at the other end of the cable cut back. BigClive has been learning from the Chinese!

It looks bloody dangerous and completely appropriate for this channel :)

It's the Highlander Edition. There can be only one.

Michael Thompson

Perhaps to give it room to be placed into a specific enclosure, or to mount onto a heat sink or perhaps both! It will surely be interesting regardless.

Michael Thompson

Looks like a mains-powered-lipo-backup-PIR-sensor-LED-motion-indicator ;-) It's a simple MPLBPIRSLEDMI device.

Kai W.

There must be a reason the device (LED? - not my first guess) is so far away from the board. I'm stumped though.

Robert Sanges

Why is the battery that far off the.... oh, it wouldn't be a rig to test lithium cells to see when they become light-emitting, would it?

Mark Dennehy

I'm going with minimalist emergency light.

Kadah

The black and red leads go to a temperature sensor. When the power goes out and the room temperature drops below a default value set by a resistor the unit comes into action. A big mosfet hidden under the board shots the LiPo cell and sets it to fire. The unit needs to be positioned in a rush basket filled with old news papers plenty of cotton wool. It is an emergency house warmer!

Frank

Battery ignition on a tiny thermite suppository

He probably meant as it is custom build that the only one existing

Manoel

It certainly looks like a battery backup emergency light. I am confused by the statement that there is only one in existence?

Lostngone

I'll go with the majority vote, capacitive dropper ( I didn't know what that was until I found this channel), bridge rectifier, lithium cell, transistor for switching and I assume that's an LED on the red and black leads. LED emergency light, should have a good runtime if the battery is big enough and led is run at a low enough current.

Phil Collins

Mr Electroboom would tell you that's a FULL BRIDGE RECTIFIER, not some puny single diode rectifier.

Probably a pink emergency light... to be used in a d@rkroom 😈

Mike Weijmans

Emo...errr Emer light

Michael Thompson

Eye of Sauron

Kevin Leah (AKA Zoinks!)

I'm going with the early morning crowd and saying emergency light, which I've been wondering how to hack into one of the Q6M lights you made me buy ;) - looks like capacitor dropper, bridge rectifier, smoothing cap, led and current resistor power indicator, then a diode to protect the managed cell? And a transistor biased off by the charge current? Then a power led and current resistor. Just not sure about that final tiny diode, wondered if you had a zener in there somewhere as part of the power good sensing but physically it's in the wrong place...

Charleso

Pumpkin emergency candleless illumination device.

Agree with emergency lamp assuming that’s a emitter and not an LDR.

evilution

Emergency Light. Inactive but charging when mains voltage is available and giving light when mains goes off.

Not sure what this is aside from a rechargeable work lamp with a one what led on leads.. maybe a battery backup LED nightlight/power outage lamp? I look forward to the video 😺

Vaughn B.

Emergency light?

Capacitive dropper lithium charger emergency light thingy?

iamdarkyoshi

Must have to do with angry pixies or some witch kraft. Hehe