This is a very rough intro to controlling a beer brewing process using an Intel Edison development kit. It is not an exhaustive control system yet.
The parts used in the controller so far for demonstration include:
- Intel Edison Development Kit
- Arduino Breakout Shield
- Relay card with 4 controllable relays
- Grove-LCD RGB Backlight Kit
- Grove Temperature Sensor Kit
- Two 6V mini suction pumps
- Four meters of 6mm PVC tubing
- 6mm drill bit
- One 35W light bulb
- Jumper wires
- 6V power supply
- Two empty plastic bottles
Step 1: First Things First
Connect the Grove LCD Module to the Edison development board.
Get the IP address of the Edison development board using: https://www.instructables.com/id/Show-the-Intel-Edi...
Step 2: Connect the Temperature Sensor
- Connect the Grove Temperature Sensor kit to Analog Input 0, and tape it to the plastic bottle directly in front of the light bulb.
Step 3: Connect the Relays
- Attach the Arduino Breakout shield to the Edison development board.
- Use jumper wires to connect the VCC and GND pins to the relay control board.
- Use jumper wires to connect the GPIO pins from the D2, D3, and D4 pins to the relay control board input pins.
Step 4: Connect the Pumps and 35W Light
- On the output side of the relays, connect the pumps and the 35W light.
- You can use one of the spare relays as a connection point for the positive rail of the pumps.
- The 35W light is connected to a separate relay. Be careful here, since 220V is enough to fry the Edison board or the pumps if you aren't careful.
Step 5: Connect the Pumps and Hoses
- Connect the pumps and hoses such that the output of each pump goes into the opposite plastic bottle.
Step 6: Write Your Code
At this point, you've got to write the code that drives everything.
Resources that have helped:
Basically, the GPIO pins D2, D3, and D4 control the relay outputs, which controls the pumps and light. Analog input 0 is used to connect the temperature sensor. The I2C bus is used to control the LCD.
Bonus task: Control the LCD backlight so that as the temperature rises, the color changes from green to red.
Step 7: Done!
That's it, you've got yourself a brewing controller that demonstrates on a small scale the type of control problems you will face when brewing for real.
The sky is the limit from here.
There's a video of it in operation here: https://vilimpoc.org/Brewbeard.mp4