PiGro

out of pi error ?

check out https://github.com/dawigit/pigropico

hotkeys:

• 's' : save config
• SPACE : update
• 'r' : redraw
• 'q' : quit
• '1'-'4' : maintenance mode for PWM0-3
• cursor left/right : next/previos widget
• cursor up/down : change value/cursor position
• 'a' shows add-rules dialog
• 'e' shows edit-rules selector
• 'x' exports rules to file 'rules.yaml'
• 'i' imports rules from file 'rules.yaml'

PiGro allows you to:

• read thermal & humidity sensors
• control pwm driven fans and led drives
• maintenance mode for better eye protection from strong light sources
• automatically turn the light on and off
• automatically change power of led and out fan upon sensor values
• keep track of the moonphase
• GUI can be changed corresponding to your hardware setup

Hardware setup:

(This is my setup, you only need the Raspberry Pi and the PCA9685 PWM HAT for testing)

• Raspberry Pi ZeroW (any RaspberryPi will work)
• PWM servo driver hat PCA9685
• DS18B20 thermo sensor (Maxim Integrated)
• HIH7121 humidity/thermo sensor (Honeywell, for high humidity scenarios)
• optional: DHT-xx/AM230x (only for external measurements - NOT for high humidity scenarios)
• ELG-240-42AB led driver (Meanwell)
• Zeus compact led board 2x (Led-Tech)
• Bitfenix 200mm fan for cooling the led boards
• optional: converter [MOSFET IRF520+1kΩ resistor] for 5v pwm to 0-10v for non-pwm fans or Meanwell drivers (so you can achive 0-100% light intensity, without only 0-50% is possible (but with better lm/w ratio and cooling)
• Noctua PWM fan for outgoing air

Installation:

** CAUTION ** Only connect the led driver if you have the qualification to do so! Be careful with your fingers/hair with 12v fans! DON'T use cables with loose connectors for pwm connections to the led-driver (Meanwell) or fans! ** NO PWM SIGNAL TO THE MEANWELL DRIVER RESULTS IN LED LIGHTS RUNNING AT 100% POWER! **

The led driver is controlled via PWM0. The outgoing air fan is controlled via PWM3. (see image above)

OneWire/DS18B20: GPIO4 add the following to your raspberry pi's /boot/config.txt: dtoverlay=w1-gpio,gpiopin=4

HIH7121 connect it to i2c1

Enabling the interfaces

sudo raspi-config -> Interfacing-Options -> enable I2C, enable 1-Wire

Getting your Raspberry Pi ready

sudo apt install python3 python3-{pip,dev,libgpiod,smbus}

git clone https://github.com/dawigit/pigro.git

cd pigro

python3 -m pip install -r requirements.txt

Don't forget to add your user to 'i2c' group

sudo usermod -a -G i2c pi

Start pigro

python3 pigro.py

Start with pwm0 reranged (0-80) & reversed (inverse) signal

python3 pigro.py -rere

Start without showing moon

python3 pigro.py -nomoon

Start with color theme ['default','blue','red','c64','pip3boy']

python3 pigro.py -Cpip3boy

Expose as mqtt

python3 pigro.py -mqtt