Gadget Freak Case #182: Automation Comes to the Harmonica

By: 
March 11, 2011

gadget freak 182

Advanced Automation has been edging into our working lives for decades. While most of the inroads made by automation have been in manufacturing, these technologies are being increasingly applied in entertainment. Jon Sorkin has created a gadget that plays programmed songs with a harmonica. The device, known as the E-Sharp, uses two standard "C" harmonicas and plays them with compressed air. The E-Sharp can play a number of simple tunes. When the device is on, an LCD displays the name of the project and the developer's name, followed by a prompt to select a song.

GADGET FREAK 182 DOCUMENTS

GF 182 Build Instructions

GF 182 Schematic

GF 182 Bill of Materials

GF 182 Hard Playing Robot Basic File

GF 182 LCDOut Basic File

GF182 Harp Motor Basic File

GF 182 Video

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Gadget Freak 182 Materials

Amount Part
Description
Allied Part #
3 8-bit PIC
microcontroller
383-0496
1 Adjustable Voltage
Regulator 1.2-37V
248-0046
1 1A quad H-driver 735-1803
1 Dimmer for LCD
Backlight
980-2750
1 White on Blue Backlit
LCD
355-0017
1 1Kohm Linear
Potentiometer
754-1566
1 0.20W, 8 Ohm Speaker 623-2052
2 2,20Ohm, 1/4W Carbon
Film Resistor
296-4751
2 3,30Ohm, 1/4W Carbon
Film Resistor
296-4764
2 4,70Ohm, 1/4W Carbon
Film Resistor
840-0086
6 1KOhm, 1/4W Carbon
Film Resistor
296-4741
2 10KOhm, 1/4W Carbon
Film Resistor
296-4743
2 0.1uF, 50V Ceramic
Capacitor
649-0075
2 10uF, 50WV dc Axial
Lead Capacitor
613-0338
3 NPN Transistor,
40VCE,75VCB,6VEB;0.6A
411-0320
1 50MA@24V dc, NO
button
821-1573

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