UNB Makerspace:
Automated Plant Workshop

Hosted by: Josh Watson and Geoffrey Chenard
Funding: EEF and EUS

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Description:

• The goal of this workshop is to create a fully automated plant capable of taking care of itself as long as it's plugged in and there's water in a reservoir.

To Do:

• Create schematic
• Create build guide
• Link to editable fusion 360 files
• Create and post revised design
• Potential Revisions:
  • Might have to replace the 2n2222a for the pump with an AO3400 or other MOSFET
  • Add pull-up resistors for transistor/MOSFET
  • Add reverse current diode for pump [probably not too important]
  • Add smoothing capacitor for pump
  • Potentially add current limiting / pullup resistor for pump
  • Modify tolerances for LED Holder and the Arm
  • Modify the electronics holder so the fit better, add holder for perfboard

Materials:

Electronics

Fabricated Boards:

• 1 x Arduino Nano
• 1 x LED Array PCB
• 1 x Sisterboard

Components:

• 9 x 5730 (or other) SMD LEDs

• 9 x 50 ohm 1/4 W resistors (can increase this number to decrease brightness)

• 1 x Capacitive Soil Hygrometer

• Cabling

• 4 x 1K ohm resistor

• 4 x 10K ohm resistor

• 4 x AO3480 N-Trench MOSFET

• 1 x SMA "M4" 1n1Diode

1 x 1/8" PVC tubing cut to length

• 1 x 3D printed pot
• 1 x 3D printed LED holder

Building Instructions: