This is a major hardware update from the CRT IoT project. 30 years in the future (from 1955), the LCD TV was released and conveniently came with component ports. Unlike it's predecessor, the LCD IoT actually has proper hardware. Whilst it is not strictly necessary to read the first iteration, CRT IoT, it will give greater detail into the software and initial design. The CRT IoT ended because CRTs are actually not that convenient and are hard to obtain with a component port. We left off with a working prototype on a small TV and had these parts: This project became possible when I found a small LCD screen on Amazon. It was originally meant to be a back-up monitor for trucks but it has component plugs so it works great for me. The LCD requires 12V DC which makes sense because that is the power supply in almost every vehicle. Once the power and cables where connected: It worked, which is great because it means I didn't waste money on buying the screen. The one thing that this screen did not come with was audio. This stumped me for a little while until I found the Easy Button. This is an "That was Easy" button from Staples. When you pushed the big red button, it would say "That was easy" quite loudly. One thing led to another and the speaker was out of the button: This was a little too harsh and I realized (much later) that I destroyed the speaker's amplifier system as well. The button used two AAA batteries so only a voltage of 3.0V which means it could have been powered with the Pi. Moving on, with the speaker out I needed to determine the positive and negative wires which could just be done with a battery. If the leads match the battery, there was a crackling noise. If it was reversed, there was no noise. It was then tested through the component to 3.5 mm jack that was soldered in the CRT project. It worked and sound was coming out of the speaker which was pretty cool! At the moment it was just duct taped to the component cable but it was not a permanent solution. I wanted to make this project as small as possible so I bypassed the cable and the audio port by soldering the speaker directly to the Pi board: To figure out which pins were which, I used my make-shift continuity checker. Test time: Again it worked! Now the only wiring step left was to figure out how to power both the Pi and the LCD with a single power cable. I found two power bricks, one that converts wall power to 5V and another that converts it to 12V. I connected the first brick: This worked so I daisy chained the next brick onto that. I did attempt to solder the AC cable to the brick, but the prongs were large so they didn't heat up as fast as I thought. I actually melted the plastic on the brick a little bit, whoops. Everything was crammed into a nail box that was in my workshop: You can see the daisy-chained power bricks on the right and the Pi, speaker and cables on the left. With the lid on the result is: I taped it up to make it look more complete. There is a single power cable coming out the back, Ethernet and USB on the side and the speaker with speaker holes on the front. Using a power reader, the LCD IoT uses about 5.2 W of power which works out to about $3.00 a month if I leave it plugged in 24/7, nice. The audio was too quiet, it can be heard if everything is still but not much else. I was able to crank up the internal amplification settings on the omxplayer to about 50/100. If I went any higher than that the signal would clip and become distorted. I am pleased with how this turned out and that it can redeem what was the CRT IoT.