Hello!! It's Joseph

Igor Zamlinsky (left) and Gleb Polyakov (right), both Russian immigrants who grew up in Atlanta. Igor is a mechanical engineering student at Virginia Tech and Gleb is a student at George Tech. kickstarter page features: redesigned thermoblock PID controlled temperature and pressure, pre-infusion, shot-time settings all these parameters are user programmable Arduino Mega controlled Vimeo Kickstarted in 2012, raised 16 times more of its target, promised to deliver the machine in 2 years time.  Unable to complete the project, and sold the IPs to John Buckman , who founded the Decent Espresso machine DE1  Home barista dtusciencepark . Why crowdfunded hardware projects fail .... working with pressurized, boiling water can be a dangerous game for even the most experienced engineers, and Polyakov and Zamlinsky were just beginning their careers. Early prototypes of the machine had water “spurt[ing] halfway across the room”, and later ones sported deflecting panels under high pressur...

  Which espresso machine to mod? look for those that has big empty space inside, eg Gaggia classic, or Rancilio Silvia, or Brasilia Lady. Typically these machines have existed for more than 30 years, and do not have any electronics inside. They use a single brass or aluminum boiler, controlling on/off by thermostats. The pump is typically a vibration pump steam generation by another thermostat     Kalaf gitlab and website provides the principles, code, schematic, builds, instructables. ( but not very active)    Jura hacking a Brasilia from Rhys Goodwin  gaggiaclassicmods iSPRESSO and instructable   Es(pi)presso and on home automations arduino-PID-controller-for-espresso by Ross Satchell and published on hackster   Espressuino based on arduino shu-fan   espresso-arm    heald ca pressure control in gemilai crm3605 by pierreye instructable on Saeco SIN006 Callan Bryant schneor design    gravimetric mod on home-bar...