Scripts created for Raspberry Pi Zero W assistant using Google Assistant and Google Cloud SDK. Root folder ./ contains scrips written for features listed below, ./drivers folder contains drivers written for external hardware connected through GPIO pins.
- Python3 with libraries: python3-gpiozero, redis, python-nmap, tcp-latency
- Google Assistant SDK
- Redis
- OMX Player or mpg123
- nmap
Set scripts folder (this) in path environment variable /home/pi/.profile:
# set PI_HOME
export PI_HOME="/home/pi"
# set PATH to custom scripts folder if it exists
if [ -d "$PI_HOME/scripts" ] ; then
export SCRIPTS="$PI_HOME/scripts"
PATH="$PI_HOME/scripts:$PATH"
fi
# set PATH to custom drivers folder if it exists
if [ -d "$PI_HOME/scripts/drivers" ] ; then
export DRIVERS="$SCRIPTS/drivers"
PATH="$PI_HOME/scripts/drivers:$PATH"
fiUses google cloud text to speech api to create mp3 speech files. Requires omxplayer (or mpg123) and gcloud cli (https://cloud.google.com/sdk/docs#deb)to be installed.
Refer https://cloud.google.com/text-to-speech/docs/quickstart-protocol for tutorial
Usage: aehe-speak <setup|add|speak> [key] [text]
# Setup speak (one time)
bash speak.sh install
# Create mp3 file from key and text
bash speak.sh add SAY_HELLO "Hello! This is Raspberry Pi Zero W"
# Play mp3 file for the key
bash speak.sh say SAY_HELLOThis script pings 8.8.8.8 to check internet and sets GPIO(4) output 1 if internet connection is not available else will set it 0
Usage: sudo bash internet_indecator.sh <start|check>
- Edit corntab config:
crontab -e - Configure start script on boot
@reboot sudo bash /home/pi/scripts/internet_indicator.sh start >/dev/null 2>&1 - Configure check script every minute
* * * * * sudo bash /home/pi/scripts/internet_indicator.sh check >/dev/null 2>&1Due to limitations ofcrontababove line schedules check per minute, to check every 20 seconds you can do
* * * * * sudo bash /home/pi/scripts/internet_indicator.sh check >/dev/null 2>&1
* * * * * sleep 20; sudo bash /home/pi/scripts/internet_indicator.sh check >/dev/null 2>&1
* * * * * sleep 40; sudo bash /home/pi/scripts/internet_indicator.sh check >/dev/null 2>&1
Prints hardware stats like temperature, pressure, humidity, cpu, memory, disk, time, network on screen. Usage python3 display_stats.py argument
Valid arguments are:
-d : Displays date and time, arg2 decides time interval to refresh seconds
-n : Displays network stats
-t : Displays temperature from sensor and weather api
-p : Displays pressure from sensor and calculates sea level pressure
-h : Displays humidity from sensor and weather api
-c : Displays cpu usage and cpu temperature
-m : Displays memory and disk usage
-l : Displays ambient light, sunset / sunrise time
-sn : Scans the network using nmap
-sw : Calls weather api for current location
Example:
python3 display_stats.py -d 7
python3 display_stats.py -n
- Edit corntab config:
crontab -e
@reboot sudo /usr/bin/python3 /home/pi/scripts/drivers/lcd_16x2.py -i >/dev/null 2>&1
@reboot sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -sn >/dev/null 2>&1
@reboot sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -sw >/dev/null 2>&1
* * * * * sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -n >/dev/null 2>&1
* * * * * sleep 7.5; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -t >/dev/null 2>&1
* * * * * sleep 15; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -p >/dev/null 2>&1
* * * * * sleep 22.5; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -h >/dev/null 2>&1
* * * * * sleep 30; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -c >/dev/null 2>&1
* * * * * sleep 37.5; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -m >/dev/null 2>&1
* * * * * sleep 45; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -l >/dev/null 2>&1
* * * * * sleep 52.5; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -d 7 >/dev/null 2>&1
*/5 * * * * sleep 11; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -sn >/dev/null 2>&1
*/15 * * * * sleep 47; sudo /usr/bin/python3 /home/pi/scripts/display_stats.py -sw >/dev/null 2>&1
37 */4 * * * sleep 19; sudo /usr/bin/python3 /home/pi/scripts/drivers/lcd_16x2.py -i >/dev/null 2>&1
Assuming the python script is executed from root./folder
from drivers.bme280 import readBME280All
# returns tuple (temperature, pressure, humidity)
readBME280All()Creates pulse width modulation of 120Hz with duty cycle of 0.6 on GPIO 27
Create service to start execution on startup
sudo nano /lib/systemd/system/pwm_op.service Add below contents
[Unit]
Description=Create 120Hz 0.6 duty cycle pulse width modulation output
After=multi-user.target
[Service]
Type=idle
ExecStart=/usr/bin/python3 /home/pi/scripts/drivers/pwm_op.py
[Install]
WantedBy=multi-user.target
Configure systemd
sudo systemctl daemon-reload
sudo systemctl enable pwm_op.service Driver to set color leds on/off
- Edit corntab config:
crontab -e
@reboot sudo /bin/bash /home/pi/scripts/drivers/led_gpio.sh init >/dev/null 2>&1
Supported colors are red, green, blue, white and supported states are 0, 1
Example: led_gpio.sh set red 1
Driver to read values from SPI input and handle value changes. CE0 port is connected to MCP3008 of which CH0 is mode select potentiometer and CH1 is TEMT6000 output. Create service to start execution on startup
sudo nano /lib/systemd/system/spi.service Add below contents
[Unit]
Description=Service to read SPI inputs on CE0
After=multi-user.target
[Service]
Type=idle
ExecStart=/usr/bin/python3 /home/pi/scripts/drivers/spi.py
[Install]
WantedBy=multi-user.target
Configure systemd
sudo systemctl daemon-reload
sudo systemctl enable spi.service 
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent