I was saddened to hear of Leonard Nimoy's death earlier this week. What a great guy. I've been a long-time fan and can't help but feel that we've lost something special here.
I think that this painting by John Jacobsmeyer is a fitting tribute to the enigma that was Leonard Nimoy. I've told Mrs Uke that I'm going to buy it to hang above the fireplace. Live long and prosper my friend! :-D
My piezo buffer circuit involves an audio-in which you can see here is connected to my Sharkfin Ukulele piezo pickup; an audio-out which is connected to my guitar amp and a 9vDC-in which I'm feeding with a standard guitar effect pedal power supply.
Here's an interesting observation:
I can plug my Sharkfin directly into the amp and it gives sound with a single lead, but if I take the in and outs I'm using on the breadboard circuit and join them together to effectively bypass the circuit (i.e. two leads joined together), I don't get any sound through the amp. Something about this arrangement is completely degrading the signal. Right now, I don't understand why this should be.
Having got everything together, nothing worked. How bloody frustrating! My crude attempts at debugging failed, so I started to experiment to try and simplify the circuit and get a sound out of the JFET. My thinking was that if I could at least prove that the JFET was working, I could then build upon this. I threw the laws of science out of the window and plugged things in any which way until at last I got sound! YAY! ...and then it started making a sort of squelching noise ...and then it went dead altogether. BOO!
Try as I might, I couldn't get it to work again. More debugging required...
Here's an interesting sync. Last week I told you I was reading King City by Brendon Graham. Check out this picture. Top is a drawing in the book. Bottom is my profile pic from a period in 2012. What's this mean then?
Finally, I'm going to end with mention of another electronics project. This one comes courtesy of Geoff Eggins and it involves electronics. Geoff's pimped his ukulele to turn it into Iron Man!
You can find all the details on the Iron Man Ukulele website. Geoff says that he has no other projects in the works. COME ON GEOFF! YOU CAN'T LEAVE IT HERE! Ha ha.
I think he's done a great job. At the heart of the project is a kit ukulele that's been ripped open and put back together again with added wires. I call out the wonderful job that Geoff's done with the headstock inlay and also the distinct lack of information on how he wired up the LEDs. Fix it Geoff! ;-)
Go see for yourself.