DENON API PHP Script

Simple script used to remote control a DENON receiver with IFTTT and Amazon Alexa.

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This script uses the DENON API to control a DENON receiver using IFTTT and Amazon Alexa. Tested with DENON AVRX2400H.

When it's done the process works like this: Alexa Command > IFTTT Webhook > PHP Script > DENON Receiver

Why do you need this PHP script? Unfortunately, the volume commands on the DENON receiver only increment by 1 so without this script you'd need to repeat "Alexa volume down" five times for it to make an audible difference. You also can't solve this with IFTTT because it doens't let you loop webhook commands. The PHP script allows you to loop the DENON volume API with a single voice command. It's also easier to update than individual IFTTT applets.

INSTRUCTIONS

1. Port Forwarding

• First add a port forwarding rule in your router to forward the API request to your DENON Receiver. Choose whatever port you want but have it forward to :8080. For example: 4566 -> 192.168.1.111:8080.

2. PHP Script

• Update the $ip variable to your home IP address and the $port variable to the port you're forwarding.
• Upload the script to the webserver.

NOTE: If you're using a hosting provider, make sure they have opened your specified port for outbound connections.

3. IFTTT

• You need to create an IFTTT applet for each command. The ingredient is IF Alexa Say a specifc phase THEN trigger Webhook.

Here's an example to mute the tv:

IF ALEXA

• Say a specific phrase - "mute tv"

WEBHOOK

• Method - Post

• Body - NULL

• URL - https://(yourserver)/denonavr.php?cmd=muteon

  • Format is (URL of script) + ?cmd= + (parameter)

• Content Type - application/x-www-form-urlencoded

Parameters in PHP Script

Parameter	Action
volup	Volume Up
wayvolup	Volume Up More
voldwn	Volume Down
wayvoldwn	Volume Down More
mplay	Switch input to Media
cblsat	switch input to Cable
muteon	Mute On
muteoff	Mute Off

4. Alexa

• If you don't want to say "Alexa trigger" before every phrase, set up a routine in Alexa as a shortcut for the IFTTT trigger.

Examples

Examples

Parameter	URL	IFTTT Cmd	Alexa Cmd
volup	https://(yourserver)/denonavr.php?cmd=volup	Alexa trigger volume up	Alexa, volume up
wayvolup	https://(yourserver)/denonavr.php?cmd=wayvolup	Alexa trigger volume way up	Alexa, volume way up
voldwn	https://(yourserver)/denonavr.php?cmd=voldwn	Alexa trigger volume down	Alexa, volume down
wayvoldwn	https://(yourserver)/denonavr.php?cmd=wayvoldwn	Alexa trigger volume way down	Alexa, volume way down
mplay	https://(yourserver)/denonavr.php?cmd=mplay	Alexa trigger Apple TV	Alexa, Apple TV
cblsat	https://(yourserver)/denonavr.php?cmd=cblsat	Alexa trigger TV	Alexa, TV
muteon	https://(yourserver)/denonavr.php?cmd=muteon	Alexa trigger mute tv	Alexa, mute tv
muteoff	https://(yourserver)/denonavr.php?cmd=muteoff	Alexa trigger unmute tv	Alexa, unmute tv

OTHER

• The DENON API documentation is linked if you need other commands.
• If your home IP address changes you only need to update the IP address in the PHP file. (Or you can set up DNS, it wasn't worth the effort to me).
• I'm not a developer, I'm just a dabbler that cobbled this together!