Ultrasonic essential Oil diffuser
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@fifipil909 That's outstanding work!
I never knew these ultrasonic essential oil diffusers existed.
for version 2 you need to add a sensor for when the oil is depleted!
What sort of current does the ultrasonic humidifier demand?
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@gregl yes, I think about add a level indication by using a simple ldr and a led, shouldn't be complicated to archeve.
regarding the ceramic caps, a lot of them you can find on ebay use 40 Vac at 1.6Mhz. so not so easy and finding a 8:1 transformer working at this frequency to make a small DC to AC converter is not that easy.
after some search, I find some other caps like exactly the same there is on this "donut" humidifer. they are working at a much low frequency, 113khz to be exact.
http://fr.aliexpress.com/item/20mm-113KHz-ultrasonic-atomizer-transducer-atomizing-part/32273063940.html?spm=2114.44010308.4.177.0Amsoy
Regarding the voltage, I found some caps working at 5vpp but the donut caps seems to working arround 50v.
I don't have any idea how they boost the voltage to that pick.here is some scope:
Mofset Gate :
Caps input:
the sinus wave it's really durty, but seems to be enough to vibrate the caps.donut IC :
if someone have some idea of what is this black component on the right side. seems to be the one that boost the voltage up to 60v.
@tripy yes everything handmade. my friend carpenter help me to glue together some piece of wood plate like this : http://planete-bois.com/plans-de-travail/28-plan-de-travail-chene-lamelle-colle-aboute.html I manage the rest with a router and a drill press.
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"what is this black component on the right side"
id say its a simple transformer. how many leads go into it? ( photos a bit blurry ) -
@gregl yes, I think about add a level indication by using a simple ldr and a led, shouldn't be complicated to archeve.
regarding the ceramic caps, a lot of them you can find on ebay use 40 Vac at 1.6Mhz. so not so easy and finding a 8:1 transformer working at this frequency to make a small DC to AC converter is not that easy.
after some search, I find some other caps like exactly the same there is on this "donut" humidifer. they are working at a much low frequency, 113khz to be exact.
http://fr.aliexpress.com/item/20mm-113KHz-ultrasonic-atomizer-transducer-atomizing-part/32273063940.html?spm=2114.44010308.4.177.0Amsoy
Regarding the voltage, I found some caps working at 5vpp but the donut caps seems to working arround 50v.
I don't have any idea how they boost the voltage to that pick.here is some scope:
Mofset Gate :
Caps input:
the sinus wave it's really durty, but seems to be enough to vibrate the caps.donut IC :
if someone have some idea of what is this black component on the right side. seems to be the one that boost the voltage up to 60v.
@tripy yes everything handmade. my friend carpenter help me to glue together some piece of wood plate like this : http://planete-bois.com/plans-de-travail/28-plan-de-travail-chene-lamelle-colle-aboute.html I manage the rest with a router and a drill press.
@fifipil909 I assume the black component is a coil. There are many simple circuits which can generate a high voltage with a coil/ transformer or capacitors and diodes.
Some noisy examples
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There is 3 leads.
I did try to make better pic.
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Hi,
It's hard to say right now.
It can be interesting to know how do you control the On/Off.Those Ceramic caps don't like to be used without any liquid and can be damaged very quickly if there are dry.
But normally there is a build in switch off circuit if no liquid is detected.Can you tell me more how to you modify the electronic to control it with Mysensors ?
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