yodaaut / flux_capacitor

Flux Capacitor

If Pull-Down is triggered on an input pin then set an output pin on HIGH for relay activation and create a PWM-Signal depending on received values from Kostals plenticore through iobroker.

Dependency

You'll need python3-pigpio_1.71-0~rpt1_all.deb to be installed.

Install

git clone https://github.com/yodaaut/flux_capacitor.git
cd flux_capacitor
mkdir -p /opt/scripts
cp flux_capacitor.py /opt/scripts/
chmod +x /opt/scripts/flux_capacitor.py
cp flux_capacitor.service /lib/systemd/system/
systemctl enable --now flux_capacitor.service

Configuration

Change preferences here

def set_config():
    ##INFO
    # BCM    <=> BOARD 'usage'
    # gpio18 <=> pin12 'pwm_output'
    # gpio24 <=> pin18 'HIGH/low relay output'
    # gpio25 <=> pin22 'button/relay input'
    # program uses BCM mode
    GPIO.setmode(GPIO.BOARD)
    globals()['gpio_pwm']               = 18
    globals()['gpio_output']            = 24
    globals()['gpio_input']             = 25

    globals()['gpio_frequency']         = 1000
    globals()['kostal_start_value']     = 500
    globals()['kostal_max_value']       = 4500
    globals()['plenticore_instance']    = 0
    globals()['startup_timer']          = 3
    globals()['debug']                  = False

    globals()['pollinterval']           = get_pollinterval()

gpio_pwm => which pin should be used for PWM-Signal (default pin12|gpio18)
gpio_output => which pin should be used for HIGH/low output (default pin18|gpio24)
gpio_input => which pin should be used for Pull-Down Input (default pin22|gpio25)
gpio_frequency => value in Hz
kostal_start_value => any value below will be ignored on output
kostal_max_value => should be set to MAX Value
plenticore_instance => which instance to use
startup_timer => seconds to wait if last PWM-Signal was 0 debug => turn on debug messages (shown on commandline or journalctl)
pollinterval => gets interval setting from Plenticore config (don't change)

Schematics

Bill of Materials

Assembly List

Label	Part Type	Properties
LED1	Green (565nm) LED	package 0603 [SMD]; color Green (565nm)
LED2	Red (633nm) LED	package 0603 [SMD]; color Red (633nm)
R1	330Ω Resistor	package 0805 [SMD]; resistance 330Ω; tolerance ±5%
R2	330Ω Resistor	package 0805 [SMD]; resistance 330Ω; tolerance ±5%
Raspberry Pi1	Raspberry Pi B rev2	variant Raspberry Pi B(Rev 02); processor Broadcom SoC BCM2835 ARMv6
S1	Momentary Switch	package ksa_sealed_tac_switch; variant ksa_sealed

Shopping List

Amount	Part Type	Properties
1	Green (565nm) LED	package 0603 [SMD]; color Green (565nm)
1	Red (633nm) LED	package 0603 [SMD]; color Red (633nm)
2	330Ω Resistor	package 0805 [SMD]; resistance 330Ω; tolerance ±5%
1	Raspberry Pi B rev2	variant Raspberry Pi B(Rev 02); processor Broadcom SoC BCM2835 ARMv6
1	Momentary Switch	package ksa_sealed_tac_switch; variant ksa_sealed

Testing

If you haven't installed iobroker on your Raspberry then just symlink iobroker-test to your binary PATH. This will fake the necessary commands.

ln -s $(pwd)/iobroker_test /usr/local/sbin/iobroker

There is a script called "iobroker", which should fake the iobroker commands if you haven't installed iobroke

Logging

If debug is enabled you can display messages with:

journalctl --boot --unit flux_capacitor.service --follow