Inside a flame effect humidifier (with schematic)

These seem to be pretty common on eBay, so I got one to take to bits.

The circuitry is quite evolved, with a microcontroller controlling both the ultrasonic atomiser disk and also a boost circuit for stepping the voltage up.

There are locations on the PCB for extra filtering, that have been bridged by zero ohm links. I'd guess the designer wanted to keep their options open. That's also reflected in the extra LED position, allowing the PCB to illuminate a water container directly. I'd guess this PCB may find its way into other products too.

Supporting the channel with a dollar or two on Patreon helps keep it independent of YouTube's quirks, avoids intrusive mid-video adverts, gives early access, bonus footage and regular quiet Patreon live streams.

  / bigclive  

#ElectronicsCreators