Pi Servo Slack Script

pi-servo-slack.py

#!/usr/bin/env python

# Raspberry PI Bell Ringer

import re
import time
import json
import os
import slack
import RPi.GPIO as GPIO     # Importing the GPIO library
from time import sleep      # Import sleep module from time library

slack_token = '<SLACK_TOKEN_HERE>'
slack_client = slack.WebClient(token=slack_token)

# Get Slack User ID
user_list = slack_client.api_call("users.list")
for user in user_list.get('members'):
    if user.get('name') == "pibot":
        slack_user_id = user.get('id')
        break

# Set up GPIO
servo_pin = 21 # GPIO Pin where servo is connected
GPIO.setmode(GPIO.BCM)

# Define the Pin numbering type. Here we are using BCM type
# Define Servo Pin as output pin
# GPIO.setup(servo_pin, GPIO.OUT)
# gpio_object = GPIO.PWM(servo_pin, 50)  # PWM channel at 50 Hz frequency

def hammer_time():
    GPIO.setup(servo_pin, GPIO.OUT)
    p = GPIO.PWM(servo_pin, 50)
    p.start(0) # Zero duty cycle initially
    sleeps = 0.4
    sleep(sleeps)
    p.ChangeDutyCycle(6)
    sleep(sleeps)
    p.ChangeDutyCycle(12)
    sleep(0.25)
    p.ChangeDutyCycle(6)
    sleep(sleeps)

@slack.RTMClient.run_on(event='message')
def say_hello(**payload):
    data = payload['data']
    web_client = payload['web_client']
    rtm_client = payload['rtm_client']
    message_body = data.get('text', [])
    if slack_user_id in message_body:
        if "Bell" in message_body or "bell" in message_body:
            hammer_time()
            channel_id = data['channel']
            thread_ts = data['ts']
            user = data['user']
            web_client.reactions_add(
                channel=channel_id,
                name="bell",
                timestamp=thread_ts
            )

rtm_client = slack.RTMClient(token=slack_token)
rtm_client.start()