Flexit SP 30

Flexit SP 30 panel to Z-UNO.

Hardware

• Z-UNO
• SP425 controller board
• 3 x 3 V relays
• 3 x 817 optocouplers
• 4 x DS18B20 temperature sensors
• RJ45 wire
• breadboard
• resistors
• wires

Build instructions:

Connect the three 3 V relays to the Z-UNO:

• Z-UNO, pin 9: to relay 1 in
• Z-UNO, pin 10: to relay 2 in
• Z-UNO, pin 11: to relay 3 in
• 3V to relay Vin
• GND to relay GND-in

Connect the fan RJ45 wire to the breadboard:

• wire pin 3: to a diode, and then to relay 3 out
• wire pin 3: with a 1 kΩ resistor to optocoupler 3 input
• wire pin 4: to relay 1,2,3 GND-out
• wire pin 5: to a 2.2 kΩ resistor, and then to relay 1 out
• wire pin 5: with a 1 kΩ resistor to optocoupler 1 input
• wire pin 6: to a 2.2 kΩ resistor, and then to relay 2 out
• wire pin 6: with a 1 kΩ resistor to optocoupler 2 input
• wire pin 7: to optocoupler 1,2,3 GND-in

Connect the three optocouplers to the Z-UNO:

• optocoupler 1 out: to Z-UNO, pin A1
• optocoupler 2 out: to Z-UNO, pin A2
• optocoupler 3 out: to Z-UNO, pin A3
• optocoupler 1,2,3 GND-out: with 1 kΩ resistors to GND

Connect the four DS18B20 temperature sensors to the Z-UNO:

• Z-UNO, pin 12: to DS18B20 data pin
• 4.7 kΩ pullup resistor for DS18B20 data pin
• 5V to DS18B20 5V pins
• GND to DS18B20 GND pins

Connect power to the Z-UNO:

• Z-UNO, USB: power source
• Z-UNO, GND

Firmware

Upload to Z-UNO by:

• install the Z-UNO software version 2.1.5 for Arduino. See 'here' for instructions.
• upload 'firmware'.