This is the initial repository for our IoT Study Group.
The aim of this project is to create an automated way of turning off all the AC units in the office at some specified time, with the intention of reducing our energy consumption. Alexa integration is also on the roadmap, in order to control the AC units with only our voice power.
$ git clone --recursive https://github.com/IotStudyGroup/IRBazooka.git
- Eagle
- PCB files.
- Led-holder
- 3D Printed files for the LED holder. You don't actually need it. But it makes it easier to position the LEDs.
- NodeMCU
- Firmware (WORKING IN PROGRESS - NOT USABLE YET)
- OpenMQTTGateway (git submodule)
- open firmware that works great!
These are the components necessary to build the board
Qty Value Description
2 10kΩ 10kΩ resistor
3 1kΩ 1kΩ resistor
7 2N3904 NPN Transistror
1 S8550 PNP Transistror
1 ESP12E_DEVKIT NodeMCU v2
6 LED-IRTSAL6100 Infrared LED (IR)
1 TSOP4838 IR Receiver and Demodulator
Link for buying at Filipe Flop:
- D1 (GPIO5) - IR Receiver
- D2 (GPIO4) - IR LEDs
The easiest way is to use it with ESPHome Here's an example of a configuration of a LG AC:
substitutions:
name: "Bedroom AC"
esphome:
name: bedroom_ac
platform: ESP8266
board: nodemcuv2
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Bedroom Ac Fallback Hotspot"
password: !secret wifi_password
captive_portal:
# Enable logging
logger:
# Enable Home Assistant API
api:
ota:
remote_receiver:
id: receiver
pin:
number: D1
inverted: true
dump: raw
remote_transmitter:
pin: D2
carrier_duty_percent: 50%
# Using a temperature sensor from Home Assistant
sensor:
- platform: homeassistant
name: "temp sensor"
internal: true
id: temp_sensor
entity_id: sensor.bedroom_temperature
climate:
name: "${name}"
platform: climate_ir_lg
receiver_id: receiver
sensor: temp_sensor
header_high: 3265us # AC Units from LG in Brazil, for example use these timings
header_low: 9856us
- Circuit inspired by Harald Braun's IRBridge