Between the weird microcontroller with integrated boost converter and a spectacularly complex 3D moulding, this humble air freshener is an education in cost optimisation. The grey moulding inside could be classed as art.
I thought this was going to be an easy video to make. Especially when I saw the minimalist PCB. But it had me puzzling for a while. I haven't a clue who makes that weird microcontroller. It's the first time I've seen one with a boost converter built in.
In hindsight the choice of the switching components may have been down to the drive voltage. The discrete transistors are getting a solid 5V gate current, but the positive pair can only be pulled down to near 0V from the battery supply which is between 1 and 1.5V, and that would be a very low gate current if it's a MOSFET.
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I thought this was going to be an easy video to make. Especially when I saw the minimalist PCB. But it had me puzzling for a while. I haven't a clue who makes that weird microcontroller. It's the first time I've seen one with a boost converter built in.
In hindsight the choice of the switching components may have been down to the drive voltage. The discrete transistors are getting a solid 5V gate current, but the positive pair can only be pulled down to near 0V from the battery supply which is between 1 and 1.5V, and that would be a very low gate current if it's a MOSFET.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
Well done friend the exercise is marvellous both in terms of presentation and engineering skills-Thanks a lot Clive.
The new one I've just taken apart the motor is wired, I suppose cheaper doing it that way than the metal clips.
Hello, no drilling was needed, I use "watchmaker's" screwdrivers, so I took it apart and put it back together just fine. I'm just surprised that it's quite loud. I tried to lubricate the gears with vaseline, but it doesn't help. That machine scares me. It also wobbled a lot when starting, so I backed the container with the fragrance all the way around and finally secured it with electrical tape after closing. I don't know what you're saying, because I don't speak English, I just watch videos, or automatic subtitles if possible, and translate this text via google translate.
Hello I have automatic spray from glade is it possible to change timer or use it on manual they are 4 settings 9 16 36 and off the problem is when I have it off manual mode it doesn't work it's completely off to use it manually I have to enable one of the timer settings for is it possible to change something in the board? I have a picture of the pcb if I can sent it somewhere
Hello, anyone knows a way to bypass the sensor for the older models? I used to change the top of then can (the small plastic sprayer) so any kind of refill works, but now I got a different sized bottle (the diameter of the small tube different ) so it does not work. So any way to hack the sensor? Many thanks.
In America, the nozzole on the refills are also angled up but still has a black circle in the center. The spray still makes a hissing sound rather than a short burst when it's pressed down
Well i have to admit this has made me laugh..the guys even drilling me out ha…dam…ha.
Love this guy..could you do a review on a potato…ha..
After few moths it always stops working 🙁
So much engineers
So how did you manage to get the grey/white middle part out of the first automatic spray?
Thanks for this video. Just found one near my street. One man's trash and all. Just punched out these 3 spots with screwdrivers and a rubber mallet. Don't do that, the bond in-between's stronger than the plastic at the top! 😂 BTW, all of that engineering and beauty was ruined by sparing just 3 screws. Sigh.
I find mine makes a clunky noise….am investigating to see if I can quieten t! Great product though!