https://stream.echo6.co/videos/watch/e061ee7e-4847-4446-9958-c34fe8febc10 I saw this unit in a local farm store (Farmers Combine in Ramsey) and bought it for us to explore. It's more or less an automatic air freshener unit with a can of fly spray, but it seems to be an older design similar to the units used in commercial restroom facilities. I think the chip is a dedicated ASIC (Application Specific Integrated Circuit) that is specifically designed for units like these. It seems to have integrated timing modules with internal capacitors, and has an extremely low quiescent current measured in microamps. The spray is 1% pyrethrin with Piperonyl Butoxide, a chemical that makes the pyrethrin more effective by reducing insect defense against it. Pyrethrins are based on a natural defence chemical generated by chrysanthemum plants. Most home sprays are about 0.1% pyrethrin here. But also get sprayed a lot longer. The unit is very hackable for custom use. There are two distinct timing modules which are set with external resistors. One controls the motor run-time and the other sets the timing clock which determines the time between sprays. The LED flash timing is also derived from that clock, so shorter delays result in faster flashing. A totally custom time between sprays could be set with a 10 Megohm potentiometer in series with a 240K resistor to set the minimum time and allow variation up to a few hours between sprays. That could be useful for very light scenting with a fragrance spray. In hindsight, I'm thinking that the two connections for the time setting resistor may indicate that it is effectively across an inverter with an integrated capacitor on the input to create a simple oscillator. The use of a metal grip for the top of the can means that the unit can accommodate non standard cans, or with a slight modification to the case it could take full size unmetered cans. 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. #ElectronicsCreators Wed, 15 Apr 2026 13:59:44 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/e061ee7e-4847-4446-9958-c34fe8febc10 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.