Required characteristics

Power supply module

• 230V AC / 5V DC

Microprocessor module

• based on microprocessor ATmega128-16AU
• USB/RS232 converter
• SD card slot
• buzzer
• real time clock (RTC)
• button or jumper to factory setting reset
• status LED which will be using blinking to inform of device status information (due to possibility of not having connected display)
• connectors to connect IO modules

Ethernet module

• optional ethernet additional module

Display and buttons module

• optional display and control buttons (configuration can load via serial port, TCP or load from SD card)

IO modules

Temperature module

• jumper which can determinate if it is cooling module (in case of increasing temperature above specified value closes the switch, in case of decreasing temperature below specified value off the switch) or heating module (in case of increasing temperature above specified value off the switch, in case of descreasing closes the switch) - this characteristics can be solved in firmware
• connectors for 1-3 temperature sensor from which temperatures will be averaged
• 1pc SSR relay for switching the appliance
• connector for direct connection of button/switch which switches the relay regardless of the temperature

Temperature module - extended

• switching of more temperature sources into one (e.g. mixing hot and cold water with different temperatures into one keeping the temperature using the switching of refrigerant or heating, ...)
• connectors to connect up to 6 temperature sensors from which will be evaluate which relay have to close the switch
• 2pcs SSR relay for switching the appliances
• 2pcs connectors for direct connection of buttons/switches which switches the relay regardless of the temperature

Motor module - low-voltage, DC

• controling the operation of low-voltage motor with possibility of variable speed using PWM (Pulse-Width Modulation) and with reverse operation
• connector to connect DC motor
• connector to connect motor power supply from external source
• connector to connect potentiometer for direct control of PWM
• connector to conect button/switch for motor operation direction
• connector to connect button/switch for on/off external motor power supply
• jumper which will directly switch external power supply

Switching module

• high voltage switching device
• 1pc SSR relay
• connector for direct connection of button/switch which switches the relay manually

Servo module

• control the servomotor (e.g. pro opening/closing the valve)
• connector for servomotor connection
• connector for direct control of servomotor potentiometer connection

Input ports:

• 1pcs temperature sensor in hot liquer tank (HLT)
• 1pcs temperature sensor at the output of HLT
• 1pcs temperature sensor in mash/lauter tun (MLT)
• 1pcs temperature sensor at the output of MLT
• 1pcs temperature sensor in boil kettle (BK)
• 1pcs temperature sensor at the output of BK
• 1-4pcs temperature sensors in fermentation vessel
• 1-10pcs temperature sensors in lager cellar
• 1-4x teplotní čidlo ve spilce
• 1-10x teplotní čidlo v ležáckém sklepě
• 10pcs universal button/switch input used for manual control of equipment
• 5pcs universal variable input (potentiometer) using for e.g. for mixing, for control pump speed, etc ...
• ...

Output ports:

• 1pc relay determinated to switching HLT
• 1pc relay determinated to switching BK
• 2-8pcs relays determinated to switching fermentation vessel cooling/heating
• 1-10pcs relays determinated to switching lager cellar cooling
• 1-6pcs relays determinated to switching circulator/pump (one-way pump, bi-directional pump, more one-way pumps, two one-way pumps connected facing each other)
• ...

Links:
5V 3.8A Regulated Switching Power Supply
Arduino Ethernet Board
Analog Multiplexer/Demultiplexer - 4051
Solid State Relay 230V/25A