Post by sleb23 on Jan 7, 2023 6:56:02 GMT -8
I've fallen down the rabbit-hole that is 'soil moisture monitoring with raspberry pi', and I've been researching various portions of the internet for the past three hours without finding answers to a few specific questions. I'm hoping that someone here can assist.
Let me preface with my motive - my wife has a serious overwatering issue with our plants that I'm trying to resolve by finding a cost-effective means of using my spare RPi0 or RPi4B to alert of us of low moisture levels. Sadly, I'm quite new to the world of boards, sensors, and circuitry, so please forgive me if any of these questions are painfully basic.
First question(s): How many moisture sensors can I run on one RPi, and I'd imagine that number varies between the two models I have? I've seen the 'Pi2Grover' as well as the 'Grove Base Hats' suggested, but I've also seen a GPIO Extender (not sure if that's relevant). Would I need multiple ADC's? I'm just a bit confused on my specific required parts list.
wiki.seeedstudio.com/Grove_Base_Hat_for_Raspberry_Pi/
Second: Is the capacitive sensor from your shop designed reliably (as detailed in the linked video - 662K voltage regulator, etc.)?
shop.switchdoc.com/collections/sensors/products/capacitive-plant-moisture-sensor-grove
Third: Are there significant benefits/downsides to using the more expensive digital capacitive sensors as opposed to the analog? (https://www.adafruit.com/product/4026)
I'm considering your 'high reliability' sensor as well, but I'm also trying to keep a minimal profile to this entire setup because it will ultimately end up in our living room near the plants. I'm imagining ten plants, each with a sensor, power save, & ADC... cables running everywhere... my wife would not be pleased with me.
Thanks for reading my post, and I appreciate any info provided.
Let me preface with my motive - my wife has a serious overwatering issue with our plants that I'm trying to resolve by finding a cost-effective means of using my spare RPi0 or RPi4B to alert of us of low moisture levels. Sadly, I'm quite new to the world of boards, sensors, and circuitry, so please forgive me if any of these questions are painfully basic.
First question(s): How many moisture sensors can I run on one RPi, and I'd imagine that number varies between the two models I have? I've seen the 'Pi2Grover' as well as the 'Grove Base Hats' suggested, but I've also seen a GPIO Extender (not sure if that's relevant). Would I need multiple ADC's? I'm just a bit confused on my specific required parts list.
wiki.seeedstudio.com/Grove_Base_Hat_for_Raspberry_Pi/
Second: Is the capacitive sensor from your shop designed reliably (as detailed in the linked video - 662K voltage regulator, etc.)?
shop.switchdoc.com/collections/sensors/products/capacitive-plant-moisture-sensor-grove
Third: Are there significant benefits/downsides to using the more expensive digital capacitive sensors as opposed to the analog? (https://www.adafruit.com/product/4026)
I'm considering your 'high reliability' sensor as well, but I'm also trying to keep a minimal profile to this entire setup because it will ultimately end up in our living room near the plants. I'm imagining ten plants, each with a sensor, power save, & ADC... cables running everywhere... my wife would not be pleased with me.
Thanks for reading my post, and I appreciate any info provided.