A custom IoT device that toggles a Yamaha AV Receiver with an infrared LED. It communicates with Echo Dot Alexa (smart speaker with a virtual assistant) through Sinric Pro API, so you can switch the AV with voice commands. Uses an ESP8266 Wi-Fi microcontroller, programmed with C++.
The IoT device is placed on top of the Yamaha AV receiver and emits infrared light through the gaps in the chassis and luckily can hit the AV's sensor inside. The device case was modeled in CAD (Fusion 360) and 3D printed.
I only need to tell my virtual assistant Alexa to turn on the device or group of devices (since I also have a bass booster bellow the AV that is connected to a purchased smart socket) and everything toggles, ready for playing music through Bluetooth or Spotify. Afterwards, I just tell Alexa to turn off everything and the AV and bass booster are turned off.
The custom designed and chemically etched circuit board consists of few main parts: the Wi-Fi controller ESP8266, an IR LED, a converter from around 5V that an old phone charger supplies to 3V3, the supply voltage supported by the controller. There’s also a connector for a micro-USB cable.
