The Magic Button

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.

If the media player doesn’t work, click here for a direct link

Leave a Reply

Your email address will not be published. Required fields are marked *