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Plants liven up any space by adding a sense of airiness and life. That is - of course - when you don't forget to water them, and they shrivel up and...
You will need: (x1) 8" x 6" x 3" project enclosure (Radioshack #270-1809) (x1) Multipurpose PC Board (Radioshack #276-150) (x1) 5VDC SPDT micro relay...
Trim away any unnecessary plastic mounting brackets from the front of the pump that may prevent it from being flush with the case (nozzles and corresp...
Line up the water pump with the base of one of the 6" x 3" sides of the case. Drill or cut a hole large enough to fit the nozzles through.
Position the water pump, Arduino, 9V battery holder, and circuit board in the bottom of the case. Make marks in each of their mounting holes. The pu...
Drill all of the holes that you have just marked with a 1/8" drill bit. You may need to widen the zip tie holes to 3/16".
On the 6" x 3" side of the case that has yet to be drilled, drill two centered 1/4" holes about 1-1/2" apart.
Zip tie the water pump securely into the case.
Cut the pump's power cord about 6" from the pump's body.
Solder the 5V relay to the board. Solder a 10K resistor to one of the relay's coil pins.
Attach an 18" section of 12 AWG wire to the free pin of the 10K resistor. Solder a 6" section of black 22 AWG wire to this joint. Attach an 18" secti...
Pass the cut power cord into the box through the 1/4" hole closest to the water pump. Split the power cord such that each conductor is its own separa...
Connect one of the strands from the water pump to the normally-open pin on the relay. Connect one of the strands from the power cord to the common pi...
Attach the circuit board to the project box using 1/4" spacers, nuts and bolts.
Attach the two free power cables from the pump and power cord together using a wire nut.
Kink the power cable on the inside of the box and cinch it in place with a zip tie to prevent it from being pulled back through. Tie a knot in the tw...
Strip the end of each 12 AWG wire and clamp a terminal ring to the end. Pass a bolt through each and fasten them in place firmly with the correspondi...
Solder the red wire from the 9V battery connector to one terminal of the SPST switch. Solder a 5" red wire to the other terminal of the SPST switch. ...
Drill a 1/4" hole in the 8" x 6" hole opposite the water pump. Mount the switch into the hole using the mounting hardware.
Plug in your Arduino and upload the following code: /* Self-Watering Plant by Randy Sarafan Reads a soil moisture sensor and turns on a rel...
Fasten the Arduino to the base of the project enclosure with nuts and bolts.
Attach the 9V battery holder securely to the bottom of the project enclosure with a 4-40 x 3/8" nut and bolt.
Plug in the battery, and secure the battery in the battery holder. If the Arduino lights up when you plugged in the battery, toggle the switch on the...
Now is time to plug everything into the Arduino. Plug the black wire from the circuit board to the ground socket on the Arduino. Plug the red wire f...
Put the lid on top of the project enclosure and use the hardware that came with it to fasten it shut.
Drill a 3/8" hole in the top of the water container's lid.
Cut the tubing in half. Plug a tube into each of the pump's connector valves.
Insert the probes into your plant's soil about an inch apart.
Place the tube from the output of the water pump onto the top of the plant's soil bed.
Fill your water container and insert the tube into the hole that you have previously drilled in the top.
Flick the switch to turn it on. You should never have to water your plant again. Now you just need to remember to refill the water reservoir.
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