BarBot/Makers

Who's doing what

• Michael E: Investigating servo pinch valve
  • this will be timed rather than measured so calibration of each valve is required per ingredient
  • one valve per ingredient bottle
  • Tower Pro SG90 9g Servo - have one for prototyping - DX bulk order - cheap
  • laser cut mech
  • 6mm soft silicon tubing - check HS consumables -
    • find reliable local supplier
    • for long lengths we don't need the nice stuff - just cheap plastic tubing is enough - need connectors though. http://www.wilko.com/fish/wilko-aquarium-airline/invt/0121966?VBMST=aquarium
    • pets at home (expensive but local)
  • Arduino servo control shield and code
  • bottle interface
    • cork/bung with hole - cheap pourers with silicone sleeve
    • bottle is inverted
    • bottle needs holder of course.
    • Bottle holder: hose clamps/rapstraps, presentation aspects, changeability,
• Michael: investigate peristaltic pumps
  • can be as cheap as pinch valves
  • very controllable
  • https://www.thingiverse.com/tag:peristaltic
  • lasercut parts
  • continuous rotation servos or steppers - can use single stepper and gearbox
• spills and mess, hygiene and cleanup

I now have 2 types of 6mm tubing: cheap plastic from wilkos and some more expensive silicone tubing from the Range -- Michael Erskine 1 April 2014

I have ordered a cheap 2l bottle fizzy drink tap from a HK ebay seller - these might be a cheap answer for carbonated mixers -- Michael Erskine 1 April 2014

• http://www.ebay.co.uk/itm/261374586967?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
• http://www.ebay.co.uk/itm/261374586967

Fizzy drink tap arrived and looks good - I shall bring it to Hackspace tomorrow 15:49, 13 April 2014 (EST)

I won an eBay auction for 6 optics!