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advise to buy a noob PCB

Danielo Rodríguez last edited by

Hello.
I want to build a battery powered presence sensor. It should have a PIR sensor (not sure if mandatory or just recommended) and a distance sensor (that I have a bunch of). It is exactly like this project:
https://forum.mysensors.org/topic/3629/robotic-lawn-mower-supervisor?_=1634468560128

However that project doesn't have much details and I am a noob (and I always be because I have no time with all my other hobbies).
Ideally I want to use the same noob board for some other sensors too because I think buyin 10 or 20 is the most budget friendly solution. Being as small as possible is a nice have but I'm willing to sacrifice it a bit for convenience. Also the more budget friendly the better

Which noob PCB is more recommended for my situation? I'll buy them through openhardware to support this awesome project.
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@wrendral said in "Remote Irrigation with LoRaWAN: LM27313 Challenges and PCB Design": I will go with a Li-Po Battery type: 304048 3.7V 1200mAh Might work, but maybe the internal protection will trigger with the high current peaks. I'd suggest you plan a 0 Ohm, (2512/THT) resistor as R2 and then replace it with a 100Ohm/1Watt if the protection triggers.
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@eiten I haven't yet made any progress on finding a good VOC sensor, but along the way I did find out something interesting regarding CO2: namely, if you sleep with your bedroom door closed at night, then the odds are good that the CO2 levels rise to surprisingly high and unhealthy levels. The better CO2 sensors are factory calibrated and never again need recalibration for the life of the sensor (usually around 10 years or so), because they are used in HVAC systems to control fresh air intake to guarantee indoor air quality. As a for instance, here is one such CO2 sensor: https://www.digikey.com/en/products/detail/senseair/006-0-0008/15790694 At around $50 for just the sensor element itself, it's not exactly cheap, but then again, I'd say it's worth it, because who wants to be burdened by remembering to calibrate their CO2 sensors? Ideally, I'd like to find a sensitive VOC sensor that also will never require calibration. Nearly all, and maybe all, of the off-the-shelf IAQ montoring stuff that you might buy for, say, $300 or less seems to require periodic calibration. For that reason, this might be one of those occasions where build is rather than buy.
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@Tmaster Never assume the original PCB was just a circuit of components, the PCB can incorporate RF shields and antenna radio ground planes...
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I bought the Every because it implied it was backward compatible with the nano. No, it's not, as we found out. Be that as it may, any word on a getting the Every working with mySensors?

advise to buy a noob PCB

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advise to buy a noob PCB

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