/pac-n90-raspi

IR remote control for DeLonghi PAC AirConditioners on Raspi with MQTT support for integration in homeautomation systems (i.e. OpenHAB).

Primary LanguageCGNU General Public License v2.0GPL-2.0

pac-n90-raspi

IR remote control for DeLonghi PAC AirConditioners on Raspi with MQTT support for integration in homeautomation systems (i.e. OpenHAB).

Device Name Status Source
PAC N81 Working pac-n90.c
PAC N90 Eco Working pac-n90.c
PAC NK76 Not tested pac-n90.c
Honeywell HO-5500RE Working honeywell.c

"DeLonghi N90 ECO with MQTT remote control"

Preparation of the Rasperry Pi

  • Prepare a Raspi W Zero
  • Prepare and wire an IR transmitter module (i.e. IR Transceiver)
PIN GPIO PIN IR Transmitter
18 (GPIO24) PIN DAT
PIN 2 (5V) PIN VCC
20 (GND) PIN GND

Wiring

touch /Volumes/boot/ssh
cp lib/wpa_supplicant.conf /Volumes/boot/
vim /Volumes/boot/wpa_supplicant.conf
  • Boot it, and adjust hostname (and fixed IP on your router?) password raspberry (default)
ssh -lpi <your_ip>

sudo su
echo klima-raspi > /etc/hostname
  • Enable IR Mode for PINS by uncommenting the following lines:
apt-get install -y vim
vim /boot/config.txt 

dtoverlay=gpio-ir,gpio_pin=17
dtoverlay=gpio-ir-tx,gpio_pin=18
  • Reboot the raspi
  • Run install script for preparation /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/8cH9azbsFifZ/pac-n90-raspi/master/lib/install.sh)" or clone this repo and run ./lib/install.sh.

Configuration of the software

  • Configure MQTT variables in the corresponding source file:
vim src/pac-n90.c

#define MQTT_ADDRESS              "t20:1883"     
#define MQTT_TOPIC_ROOT           "n90/"          
#define PAC_NAME                  "DeLonghi PAC N90 Eco"        
...
#define CLIENTID                  "<<clientId>>" // FIXME
  • Build and install the software
make pac-n90
make honeywell
make install
sudo systemctl start  pac-n90
sudo systemctl enable pac-n90

Reverse engineering a new remote

  • use the gcc bits.c, showbinaries.py and showpulses.py in lib
  • extract the bit patterns using stuff like: showcodes.py in lib

Testing the installation

  • Install mosquitto, i.e. on osx: brew install mosquitto
mosquitto_pub -h t20 -t pac/toggle/power -m off
mosquitto_sub -h t20 -t pac/power
mosquitto_pub -h t20 -t pac/toggle/temperature -m 30

Example configurations

  • Relevant fragments for configuration of OpenHAB are given in examples.

References