We offer free software for your espresso machine. It turns ordinary portafilter machines into sophisticated shot brewers with precise control over temperature, pressure and dispensed weight.

 
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leva! features
High measurement quality
  • leva! supports temperature sensors, pressure sensors, flow meters and Bluetooth LE scales to measure and control temperature, pressure, volume, flow rate and weight.
  • leva! supports digital factory-calibrated TSic precision temperature sensors. Accuracy exceeds Pt100 Class B.

Ultimate temperature control with PID algorithm

  • Dual channel PID function for up to two heating elements, for example two boilers or one boiler and one electronically heated grouphead
  • Temperature setpoints can be changed in steps of 0.1°C
  • Different PID configurations can be used during different states of the machine (warming up, idle phase, shots)
  • Two temperature sensors may be connected simultaneously, for example a boiler sensor and a grouphead sensor. Two sensors can be combined into a virtual sensor (for example to take the tempeature of the grouphead into account)
  • Ramp & Soak feature for programmed heat output during shots to optimize the 25s brew temperature curve
  • Feed-forward temperature control based on flow meter measurements
  • Automatic determination of PID configuration by auto-tuning program
  • Advanced PID configuration options such as digital filtering and integral wind-up limiting
  • Configurable Standby Mode and ECO Mode to conserve energy

Electronic pump power control

  • Electronic pump power control for vibration pumps with pressure sensor feedback control loop - nearly stepless power control. This feature gives you full pressure profiling, for example gradually falling brew pressure (= lever-style pressure profile; the extraction process softens towards the end)
  • Paddle support. Use an electronic lever or the rotary encoder of the display to control brew pressure manually, on the fly, at any moment in the shot
  • Real preinfusion: Variable, programmable preinfusion with desired pressure curve
  • Flow rate control

Pressure profiling control loop with pressure sensor

Apps for Android, Windows, Linux and Mac OS X

  • leva! continuously transmits measurements to a PC or Android device connected by WLAN, where they can be viewed as real-time plots in apps. Visual and numeric presentation of live data permits unprecedented insight.
  • The apps let you use your devices as Virtual Displays if you install the hardware without a display 

Real-time plots of live data on your computers (Windows, Linux or MacOS X) and Android devices

Dosing, Descaling and Flushing

  • Dosing feature for dispensing programmed amounts of product with the desired flow rate. leva! supports dosing by time, water volume (flow meter) or espresso weight (gravimetric dosing with "Skale 2"). 
  • leva!'s warm-up program can drastically reduce warm-up time by flushing hot water through the machine
  • Customizable descaling program

Gravimetric dosing with wireless scale "Skale 2" from Atomax

Dual boiler support

  • Support for steam boiler on/off switch

Information at your fingertips

  • Four lines of output on an OLED display convey useful information: Temperatures, setpoints, heat output, pressure (bar), shot volume (ml), shot weight (g) etc.
  • Comfortable text menus instead of cryptic numbers. By comparison, most PID controllers only have 7-segment numerical displays.
  • OLED brightness controlled by firmware
  • PID controllers switch power rapidly, which normally leads to a flickering boiler lamp. With leva!, you will not have to endure a flickering lamp because it offers a lamp replacement in form of a firmware-controlled, white, dimmable LED to convey useful state information.
  • Automatic dimmable grouphead illumination

Monitoring and safety features

  • Monitoring of water filter's liter throughput
  • Water hardness calculator and limescale buildup monitoring
  • Backflushing reminder
  • Safety functions monitor the on-times of heating elements, pump and valve and turn off the machine or sound an alarm if a problem is detected.

Invisible

  • Support for internal installations without display. Wireless configuration by computers/Android devices .
  • Instead of a full display module, a hidden rotary encoder can be installed as temperature selector.

Training functions

  • Acoustic and optical (display) shot timer to make by-the-rules espresso with perfect 25s timing
  • Ready-beep signals when the machine is thoroughly heated up
 
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