Dear all, i hope all are ok.
Im working in low power project and the idea is to use Smoke sensor that can be used outdoors.
This is option #1 (What i want to use)
I’m working with a MCU Electron and you know the working voltage is 3.3Volts for their I/O specially OUTS. in other words the Smoke sensor must be energized by one of the Out Pins of my MCU (Electron) and this sensor should not consume more than 20mAmps which is the max current every pin can handle. The output of this smoke sensor shouldn’t be a problem because i believe won’t be above 3.3V.
In summary a outdoor smoke sensor that can be connected straight to the Electron I/O (3.3Volts) without shift or voltage leveling. This will be installed in a remote area using solar panels and 3.7v Batts. With the sleeping mode option active.
If you don’t know about an outdoor smoke sensor can try as well another for indoor with 3.3Volts as main VCC source and not more than 20mAmps.
Option 2 (if not other options are available)
Another way to consider is to use the 5 volts commons smoke sensors but i need a way to turn on and off the smoke sensor every time the MCU wake up from sleeping mode. Keep into account that once the MCU is sleeping not current consumption should be active or observed, how can i do that? i need to save as much as i can battery charge and life. AS well if you know about an outdoor smoke sensor will be great.
Will be great if someone can guide me with this.