Introduction: Planterbot - the Plant Monitoring Robot
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In this instructable I am collaborating with Akin Yildiz an instructables author that creates instructables that help plants grow you should really go check out his account: https://www.instructables.com/member/Akin+Yildiz/
The planterbot is a plant monitoring robot. It uses capacitance for sensing moisture from the plant instead of using the usual soil probe, this means that wires don't go into the plant. It also detects temperature and light using thermistors and Cds photocells and displays the temperature and light graphically on the front facing LCD.
This is kind of like the the final version of Akin's : https://www.instructables.com/id/Computer-aided-pla...
Note: Currently you should power this from a 9 volt battery pack, if you don't do this and power it off of an AC wall outlet the readings will be off.
Update: New youtube video of it! another one will be coming soon that shows off all of the features.
Here is how the idea of the collaboration started: https://www.instructables.com/id/Lighttemperature-S...
Step 1: Parts and Tools
These are the parts and tools that you will need to make this project:
Arduino Uno or Leonardo with USB cable
Thermistor 10k ohm
Cds photocell (light sensor)
Battery pack for arduino with DC plug 9v
Small amount of aluminum foil (for water sensor)
Baltic birch or anything that is laser cuttable
Acrylic for water sensor (you can use wood for the water sensor but it doesn't look as good and the wood can warp if it gets wet.)
16x2 LCD preferably with backlight
Computer with arduino IDE
Hot glue gun and hot glue
Step 2: Laser Cut Parts
Here are the files that you will need to cut for an enclosure for this instructable if you don't have a laser cutter then you should see if your city or town has a local makerspace/ hackerspace that has one (or can use an online service).
Step 3: Solder Circuit
Copy the circuit off of this image: The pins of the thermistor and photocell going to A0 and A1 should be pulled to ground or the analog readings won't be correct!!
Step 4: Cut Aluminum Foil
Cut the aluminum foil into a circle the size of the acrylic circle. Then hot glue the aluminum circle onto the acrylic. This will be the water sensor.
Step 5: Connect Sensors
Attach a piece of wire onto the aluminum foil using electrical tape. After that hot glue the acrylic and aluminum foil part into the wooden piece that has a circular hole in it.
Mount the thermistor to any of the side walls of the enclosure.
Mount the Cds Photocell on the small hole in the same piece as the water sensor (Aluminum foil/acrylic).
Step 6: Mount LCD
Mount the 16x2 LCD on the piece with the rectangular hole.
Step 7: Program Arduino
Here is the code: Akin Yildiz Helped me with this.
Step 8: Assemble the Rest of the Case
Assemble the remaining laser cut box pieces into the box.
Step 9: Finished!
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