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.
Best Regards.!
@gecoffey, it would most helpful if you could post a link to the smoke sensor you plan to use.
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Hello and thanks for the quick response.
I have a couple of links to share
this are the all examples I found with Digikey.
https://www.digikey.com/products/en/sensors-transducers/gas-sensors/530
This one I saw for air quality [Not sure if this concept can be used for Smoke detection]
https://www.digikey.com/product-detail/en/ams/IAQ-CORE-P/IAQ-CORE-P-ND/5117222
If you check the voltage is max 3.3v and the consumption is very low and under the parameters for the Electron.
this is a good example of what I want but I need it for outdoors, this sensor is for indoor.
I hope this clarify a bit more.
@gecoffey, any sensor that uses I2C will work with the Electron. However, not all sensors are I2C and some consume more current than others. I suggest you select the specific sensor you want to use and provide a link to that one only.
Hello, thanks for your advice.
I think i’m not explaining very well the situation. The links i sent are examples however, i couldn’t find any project using 3.3V Smoke sensors with the Particle Electron. The links i sent are to provide an idea.
What i need is a sensor able to work outdoors, water proof etc operating with 3.3Volts and not more thant 20mAmps and can be connected to the MCU (electron) without any other interface, just a straight connection like if i’m connecting a temperature sensor like the DTH11.
I’m looking for that smoke sensor for outdoors which i can not find at this moment with that specifications.
@gecoffey, you will need to do that research yourself as you know exactly what characteristics you are looking for in the sensor. However, I would suggest you look for one that communicates via I2C to simplify.
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Thank you Peekay 123
That’s why i’m bringing all the details because i’m not able to find the type of sensor i’m looking for my project.
Perhaps some one else already did something similar and can share their experiences…!
Best Regards…!