Hey everyone, I wanted to share my recent experience integrating a Raspberry Pi-based IR transmitter with Alexa to control my old Samsung Smart TV. It was a fun challenge that taught me a lot about hardware hacking and smart home integration!
The Problem: My 2013 Samsung Smart TV doesn’t support Wake on LAN, which meant I couldn’t easily turn it on from my phone or voice assistant. I wanted the convenience of voice control without having to walk over to the TV every time.
The Solution: I decided to build a simple IR transmitter using an IR LED, transistor, and some resistors. The idea was to connect it to my Raspberry Pi running Home Assistant (HASS.IO) and send IR signals to turn the TV on. I already had the TV off functionality working via the SamsungTV component in HASS.IO, so this was the missing piece!
The Process: I started by researching how to send IR signals from the Raspberry Pi’s GPIO pins. I found a few guides but wanted to keep things simple without adding extra hardware like an ESP or MQTT broker. After some trial and error, I managed to write a small script that sends the necessary IR signal to power on the TV.
The Success: It worked! Now, I can say, “Alexa, turn on the living room TV,” and the IR transmitter does the rest. It’s a great feeling to have this old device fully integrated into my smart home setup.
Lessons Learned: This project taught me the importance of understanding basic electronics and how a little DIY can go a long way in enhancing your smart home experience. It also highlighted the power of open-source communities and platforms like Home Assistant, which made this integration possible.
If anyone else is tackling a similar project, feel free to reach out! I’d be happy to share more details or help troubleshoot any issues you might encounter. Happy hacking! 