Open Source Coffee Maker

Goal: To produce a basic, low cost, single cup coffee maker.

Requirements:

• Must be compatible with off the shelf coffee filters
• Must be able to make a single cup (20 oz) of coffee
  • Minimum 20 oz resevoir
  • Must be able to fit various sizes of mug under the spout
• Must be safe
  • Over voltage protection
  • Over temperature prevention
  • Food grade plastics
• Should be less expensive than other products
  • Not 100% required but the purpose of DIY is to save money so
  • Goal is to be less than $25, the cheapest similar product I can find on Amazon

Parts List

Currently, no hardware plans are finalized. However, this parts list captures components that may be used (i.e. this is a place for me to store a list of parts I plan to use).

• LM317 Linear Voltage Regulator (~$1)
• SRD-05VDC-SL-C Relay (?) (need to confirm part number; check electrical schematic)
• FIT0845 PTC Heating Element (?) (need to decide if this is the exact element I want to use, PTC seems like a good option though)