Basic equipment list is below; current FAQ is hosted here: https://kelpforest.org/projects/peristalticpump/index.html

======================

• Peristaltic Liquid Pump (12VDC / 300mA) with Silicone Tubing
• 12VDC Adapter (leftover wall adapter) to power the motor
• Programmable device to control motor activity:
  • [Option 1] Raspberry Pi Model B
  • [Option 2] Arduino Uno (Or Similar)
  • [Option 3] Your alternative controller of choice.
• Some way of routing power to/driving the motor:
  • [Option 1] L293D [ http://www.ti.com/lit/ds/symlink/l293d.pdf ]
  • [Option 2: Arduino Only] Seeed Studio Motor Shield (or other shield)
  • [Option 3: Raspberry Pi Only] Gertboard
  • [Option 4] Power Transistor
• [Optional] Momentary Push Button/Switch for manual fluid delivery
• [Optional] Something to house the components (I like OpenBeam or MakerSlide)