You’re probably here because you saw this video below and want quick and dirty technical info, and I have that for you, dear reader.
First off, the 3D CAD files. This took quite some time to get right, but I’m happy with how they work:
Here’s hopefully everything you need to upload to print your own PCB’s:
The code is in micropython and written to work with Indigo (my home automation platform). I’m sure it can easily be modified for Home Assistant. There are 4 files:
- config.py simply contains info to customize the units for each recipient (it will need modification)
- dfplayermini.py allows control of the micro sd card
- indigoFunc.py is purely a way to separate Indigo-specific functions from the main code
- mani.py is the main loop
config.py
WIFI_SSID = 'YOUR WIFI'
WIFI_PASSWORD = 'YOUR WIFI PASSWORD'
OWNER = 'Dan'
OWNER_ID = <<ID FOR SERVER VARIABLE>>indigoFunc.py
#CODE BELOW IS IN MICROPYTHON
import urequests
import ujson as json
REFLECTORNAME = "USERNAME FOR INDIGO"
APIKEY = "API KEY"
VARIABLEID = VARIABLE ID USED FOR TESTING # Indigo variable id
def updateVariable(varID, value):
# The message to send to the Indigo Server
message = json.dumps({
"id": "optional-user-generated-id",
"message": "indigo.variable.updateValue",
"objectId": varID,
"parameters": {
"value": value
}
})
headers = {'Authorization': 'Bearer %s' % APIKEY}
url = 'https://%s.indigodomo.net/v2/api/command' % REFLECTORNAME
response = urequests.post(url, data=message, headers=headers)
reply = response.json()
#print(reply)
return
def readVariable(varID):
headers = {'Authorization': 'Bearer %s' % APIKEY}
url = 'https://%s.indigodomo.net/v2/api/indigo.variables/%s' % (REFLECTORNAME, varID)
response = urequests.get(url, headers=headers)
var_instance = response.json()
#print(var_instance)
return var_instance['value']
def main():
print("Running main")
# usage
# updateVariable(VARIABLEID, "True")
# readVariable(VARIABLEID)
if __name__ == "__main__":
main()main.py
import time
import machine
import network
from machine import Pin, Timer
import urequests
from indigoFunc import *
from dfplayermini import Player
import config
import urandom
isPartyID = VARIABLE ID THAT STORES THE STATUS OF ISPARTY
overrideHostID = TOO COMPLICATED TO EXPLAIN
ownerResponded = False
alertTimeout = 1
numAlerts = 0
#introMusic = 1
#yes responses = 2-25
#maybe = 26-30
#no = 31
music = Player(pin_TX=17, pin_RX=16)
music.volume(14)
led = machine.Pin(2, machine.Pin.OUT)
class LastSeven:
def __init__(self):
self.integers = []
def add_integer(self, num):
self.integers.append(num)
while len(self.integers) > 5:
self.integers.pop(0)
return self.check_sequence()
def check_sequence(self):
return self.integers == [3, 2, 1, 3, 2]
checker = LastSeven()
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
if not wlan.isconnected():
print('Connecting to network...')
wlan.connect(config.WIFI_SSID, config.WIFI_PASSWORD)
while not wlan.isconnected():
pass
print('Network connected:', wlan.ifconfig())
# setup the buttons on GPIO 13, 14, and 15
button1 = Pin(13, Pin.IN, Pin.PULL_UP)
button2 = Pin(12, Pin.IN, Pin.PULL_UP)
button3 = Pin(14, Pin.IN, Pin.PULL_UP)
debounce_time = 1000 # in milliseconds
last_press_time = {13: 0, 12: 0, 14: 0}
def button1_callback(p):
global last_press_time
global ownerResponded
global checker
now = time.ticks_ms()
if now - last_press_time[13] < debounce_time:
return
last_press_time[13] = now
this = checker.add_integer(1)
print(this)
print('Button 1 pressed')
randomVal = urandom.randint(2, 25)
print(f"Random value of {randomVal}")
music.play(randomVal)
if (ownerResponded==False):
ownerResponded=True
turnOff()
print(f"{config.OWNER} responded {ownerResponded}")
updateVariable(config.OWNER_ID, "yes")
return
def button2_callback(p):
global last_press_time
global ownerResponded
global checker
now = time.ticks_ms()
if now - last_press_time[12] < debounce_time:
return
last_press_time[12] = now
this = checker.add_integer(2)
print(this)
print('Button 2 pressed')
randomVal = urandom.randint(26, 30)
print(f"Random value of {randomVal}")
music.play(randomVal)
if (ownerResponded==False):
updateVariable(config.OWNER_ID, "maybe")
turnOff()
print(f"{config.OWNER} responded {ownerResponded}")
ownerResponded=True
print(type(this))
if (this==True):
#this part is if the person who wants to host is triggering it
updateVariable(overrideHostID, f"{config.OWNER_ID}")
updateVariable(isPartyID, "Override")
ownerResponded == True
updateVariable(config.OWNER_ID, "yes")
partyOut(config.OWNER_ID)
return
def button3_callback(p):
global last_press_time
global ownerResponded
global checker
now = time.ticks_ms()
if now - last_press_time[14] < debounce_time:
return
last_press_time[14] = now
this = checker.add_integer(3)
print(this)
print('Button 3 pressed')
music.play(31)
if (ownerResponded==False):
updateVariable(config.OWNER_ID, "no")
turnOff()
print(f"{config.OWNER} responded {ownerResponded}")
ownerResponded=True
return
# set the interrupt
button1.irq(trigger=Pin.IRQ_FALLING, handler=button1_callback)
button2.irq(trigger=Pin.IRQ_FALLING, handler=button2_callback)
button3.irq(trigger=Pin.IRQ_FALLING, handler=button3_callback)
def partyOn():
global numAlerts
print("***function partyOn started...")
led.on()
print("Start Music!!!")
music.play(1)
numAlerts+=1
return
def partyOut(hostId): #this is for the override function
global numAlerts
print("***system override message...")
print("Start Party Out Announcement!!!")
music.play(32) #this is the override audio
numAlerts+=1
return
def turnOff():
print("***function turnOff started...")
led.off()
return
def partyOff():
global ownerResponded
global numAlerts
print("***function partyOff started...")
led.off()
ownerResponded=False
numAlerts = 0
return
def check_status(t):
global ownerResponded
global alertTimeout
global numAlerts
global overrideHostID
print("***fuction check_status begun")
resp = readVariable(isPartyID)
print("read variable")
print(resp)
print(type(resp))
if resp=="False":
partyOff()
return
if(ownerResponded or numAlerts > alertTimeout):
return
if resp=="True":
partyOn()
if resp=="Override":
#check the value of indigo overrideHostID
print("***checking the value of overrideHost")
resp = readVariable(overrideHostID)
#call a function similar to partyOn, called partyOut
partyOut(resp)
print(f"{config.OWNER} responded {ownerResponded}")
# create a timer object7
timer = Timer(-1)
# schedule the timer to call check_status every minute
timer.init(period=60000, mode=Timer.PERIODIC, callback=check_status)
check_status(timer)
# main loop does nothing, all work is done in interrupts now
while True:
pass
dfplayermini.py was written and hosted at https://github.com/lavron/micropython-dfplayermini
Almost forgot the materials and links…
Spastix https://amzn.to/3Rg7AY8
Rubber Feet https://amzn.to/40TrTOi
6N138 Optoisolartors https://amzn.to/3QNCjdK
Esp32 https://amzn.to/3GiCbya
Hiletgo mp3 Player https://amzn.to/47QS8XQ
MT3608 Boost Converter https://amzn.to/49UexFK
12V LEDs https://amzn.to/40WVq9U
Gikfun Speaker https://amzn.to/3MVlAEk
50mm diameter 40mm focal fresnel lens https://amzn.to/3uzQHPl
This is rushed and sloppy, but I want to get the video up and i needed to post the resources first. Thanks for making it this far!