velosynth
November 24
prototyping—format, supports an array of components on a .1” grid

prototyping—format, supports an array of components on a .1” grid

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modular—format, supports two 1.5” x 1.75” single-sided copper-clad perfboard modules (sourced from allelectronics)

modular—format, supports two 1.5” x 1.75” single-sided copper-clad perfboard modules (sourced from allelectronics)

November 22
LED driver chip MAX72XX

“for driving either 64 individual Led’s, or up to 8 digits of 7-segment displays” controlled via 3-wire SPI interface. use the MAX7221 for audio applications (reduced electromagnetic noise).
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the bungee system binds the device to the frame geometry.

the bungee system binds the device to the frame geometry.

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a 4” x 4” circuit board is suspended using standoffs, forming a rigid interior frame.

a 4” x 4” circuit board is suspended using standoffs, forming a rigid interior frame.

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control: modern device bare bones board adafruit 3-axis accelerometer analog devices AD5206 digital potentiometer allegro A1301 hall effect sensor synthesis: 4096 quad NAND inverter 4040 binary counter amplification: LM386 audio amp .25 - .5w, 8ohm speaker enclosure: EFFALO⁄envvv shL vector circboard copper-clad protoboard (part #8015-1, dimensions: 4” x 4”) standoffs of various heights bungee cord material

control:

synthesis:

  • 4096 quad NAND inverter
  • 4040 binary counter

amplification:

  • LM386 audio amp
  • .25 - .5w, 8ohm speaker

enclosure:

November 20
thinking about how to suspend the internals within the shL enclosure. the components will be mounted to horizontal boards that are held apart with vertical spacers. bolts can be used to hold the whole assembly together, also acting as the attachment point for the bungee cords that bind the device to the bicycle geometry.

thinking about how to suspend the internals within the shL enclosure. the components will be mounted to horizontal boards that are held apart with vertical spacers. bolts can be used to hold the whole assembly together, also acting as the attachment point for the bungee cords that bind the device to the bicycle geometry.

November 19
working on breadboard layouts

working on breadboard layouts

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interesting project — bicycle VR / google streetview mashup via hackaday

November 15
[Flash 9 is required to listen to audio.]

arduino microcontroller, reading hall effect sensor A1301, and interpolating speed through an AD5206 digital potentiometer that controls a cross-modulated 4093 digital oscillator.

pitch controlled by bicycle wheel motion, timbre by potentiometer. amplified through a guitar amp.