Hi everyone! It’s been a while (as I promised). The third prototype Laser Harp is now complete!
The main changes are:
-It’s bigger (20% larger)
-More buttons! I’ve used one of these (https://www.sparkfun.com/products/8033). Mostly these are used to control key changes, but the bottom row send MIDI control change messages
-LCD display to show key & scale (http://www.coolcomponents.co.uk/catalog/16×2-display-p-944.html)
-Improved velocity detection
-Improved calibration function (badly calibrated triggers display on the lcd)
-Olimexino STM32 instead of Arduino Uno (https://www.olimex.com/Products/Duino/STM32/OLIMEXINO-STM32/)
The frame is an mdf construction (shown above), with a final finish of matte black paint, about 6 coats over as many days.
I’ve included a few more images of construction below:
There’s also a video on youtube, if you’d like to see it in action:
This one will shortly be given to Lostrites (http://www.myspace.com/lostrites), for a kind of beta evaluation – they will use it for a while and get back to me with any changes they’d like to make (added scales, functions, potentiometers etc.). I’d like to thank them for financing this project (and their patience).
As usual, if this is of particular interest to you, just get in touch and I’ll be happy to supply more information about how this was made (code, schematics, etc.).
I’ve yet to become any good at playing it, but hopefully we’ll get some video of it being used for musical performance before too long.