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This inability to read discs, I believe, is a common issue typically caused by the laser wearing out (assuming dirt has been ruled out) - surely this can come about more swiftly if using scratched discs as the laser has to do more work to track and focus. For all I know, I may have wired the pad up correctly after all and it was my inability to properly install the driver that was the problem (I'm no Linux power user. An A/V cable feeds out from the rear of the unit to connect to a TV and at the front of console a brightly coloured replica of a Mega Drive control pad is wired directly into the unit itself. For the LED ground wire, you'll also need to solder in a resistor so that the LED doesn't pull more current than it should and quickly burn itself out. So if you’re using other modules aside from Teletype or crow, then you will need an external power source to make the i2c bus work. But just the other week, I finally came up with an idea: make a kind of poor man's Mega Drive mini, using the parts taken from an old Radica Mega Drive Plug and Play.

To make the Mega Pi, it only cost me £2.29, many, many hours of the only life I'm ever going to live and a blood sacrifice to the Old Gods (honestly, no joke). Anyway, I abandoned hope for the time being of reusing the old controller and moved on to at least getting the power button and LED connected up. In addition to a leader device and one or more follower devices you need something that will provide power and pull-up resistors for the i2c bus. Next we need to drill some holes so our pi board can be securely fitted to the case. As I said earlier, don't go nuts with this stuff or you'll have to shave it down to be able to fit the case back together again. I used a craft knife to very carefully shave down the globs of hot glue and the plastic casing on the wires. If you look carefully, you can still see evidence of my failed attempt to solder the original control pad to the Pi's GPIO and that I broke the delicate plastic retaining thingamajig meant to hold a Pi Zero camera in place (No big deal. I found information from here detailing the signal functions of each colour coded wire, and here, detailing how it should be wired up to the Pi GPIO.

To make matters worse, I found that the wires didn't even have the length to stretch to the GPIO and also fit back into the case (soldering the wires to a veroboard and then connecting that up to the Pi GPIO is a better way to go about things). Other variations attach to anisible or can sit in the back of your case (tt-busboard-jr). The Teletype busboard attaches directly to the back of the TT module. TXb is a 2hp eurorack format powered busboard created by bpcmusic. If your setup doesn’t involve a Teletype at all, you will need a powered busboard. I need a powered busboard? My goal for this project was to preserve as much of the original console as I could, while keeping the "plug and play" functionality of the system intact. Ok, so initially I had hoped to save the original controller and reuse it in the new Pi Zero powered console. And using a Pi Zero W would help greatly with the software side of things.

Pi Zero than the more up-to-date versions (but this may be my imagination). I did nearly end up using DMX for my under-cabinet lighting but ultimately saw sense and stuck to a protocol that is even more unfamiliar to the average consumer, Z-Wave. I suggest using red and black wires for live and ground respectively but I just used colours of wire I already had (green for ground and orange for live). I still managed to mess that up, mistakenly using all green wires for the LED and all orange for the power button. I used a permanent ink pen to make a mark through the pi mounting holes and I didn't get them all completely lined up, so maybe it would be smarter to measure them out first. It's fiddly and time consuming, but eventually I was able to get it securely in place. It made a reassuring sizzle and each contact seemed to sink into place in turn. With that said, I'm going to count this project as semi-successful, but one with room for improvement. If you want to give it a try, it's not a bad little project to get started in single board computers, what is control cable electronics and learning how to solder.