Build your own

Here you find a list of hardware that you might what to use to build your machine. Not all components are required. The hardware that you have to pick depends on your planned setup. You can find three blueprints at the bottom of the page that you can use as a reference. Pay special attention to power supplies. Make sure that the pumps and power supply that you select are compatible. Use voltage converters if needed. Please note that your setup strictly needs to use a RaspberryPi. Other platforms like NanoPi or BananaPi are not supported!

After you’ve finished your hardware setup or if you first want to try out the software on your own RaspberryPi, you can continue with the installation of CocktailPi:

Blueprints

The following blueprints show some example setups. Please note that hardware and blueprints are provided without warranty!

Basic setup

This is a minimal setup that doesn’t allow to run the pump the reversed direction.

Basic setup with reverse pumping

This is a similar setup to the Basic setup above, but this one contains two relays that can be used to reverse the direction of the voltage to which the pumps are connected. This allows the software to make the pumps run in the opposite direction. This is useful if you want to pump leftover ingredients from the hoses of your machine back into their container.

Complex setup

This setup is an example of what can be connected to your machine. It includes a GPIO expander from which up to 8 units could be connected. It also uses DC motors and stepper motors in combination.

Hardware list

Here you find a list of hardware components, that you might want to use for your setup. Please note that hardware and blueprints are provided without warranty!

Basic hardware

  • 1x RaspberryPi: <Amazon>
  • 1x Relay-Board: <Amazon>
  • 8x Dosing pumps: <Amazon>
  • 8x Diodes (reverse current diodes)
  • 1x 9V Power supply: https://bit.ly/2ZJPIcP
    • If the link doesn’t work, here is an adjustable 0-24V power supply: <Amazon>
    • Or use a larger voltage and convert it down. For example with: <Amazon> Note that this power buck can only supply 3A. You may need more that one depending on the number of pumps, that you want to use.
  • Silicone hose: <Amazon>
  • Cables
    • Make sure to pick cables that are strong enough for your application. (Cable cross section)

Fancy stuff

Faster pumps:

Stepper pumps:

  • Stepper motor pump: <Amazon>

    • The stepper motors should work with 12V, but I would recommend to power them with 24V.
  • Stepper motor driver: <Amazon> (1 per stepper motor)
  • Stepper motor driver board: <Amazon> (1 per stepper motor driver, optional)

Power supplies:

Other:

  • Touchscreen 7 inch: <Amazon>
  • 16-Pin I2C GPIO expander: <Amazon>
  • 16-Channel Relay-Board: <Amazon>
    • The raspberry Pi only has 3.3V GPIO-Pins, but the relay board needs 5V on its pins to trigger the relays. This can help: <Amazon>
  • 2-Channel Relay-Board: <Amazon> (Voltage director relays for reverse pumping)
  • Rectifier diode: <Amazon> (If you use the power supply and the power stabilizer)
  • LAN-Cable box: <Amazon> (For the case)