Finally, I did it! After some messing around with my toy yamaha keyboard, it finally seems to be working again. Have a look at my previous post back in November by clicking here for more detail. And, not only is it working, it’s once again making some great sounds. I hard wired in a couple of cables at the spot where I was previously pressing with my fingers to make a connection. This time I added a switch and a resistor, instead, to make it a bit more user friendly. I wasn’t sure whether the value of the resistor would make a difference to the sound made, but apparently not! The first one I tried, I got the same bizarre, random response from the keyboard that I remember from several months ago.
Take a look at the video and see for yourself:
at 2:13 is where it gets really interesting – you’ll notice because I stop to take a drink!
I can honestly say that I have no idea why this is happening. The connection I make affects what appears to be the chip that does the main processing for the keyboard. It seems that messing with the internals of the CPU is a little like giving a person hallucinogenic drugs, which would explain the erratic behaviour.
If you want to hear more, here is another 17 minutes if me playing with this.