Meeting Minutes 2007.01.07
The proposal is due February 15th. It would be good to have a prototype to show BM by this time.
Please sign up for email list at yahoo groups! Email list will migrate to lee.org.
Mike out of town Monday-Thursday. Weekend not ideal for meetings. Olya has class Monday and Wednesday evening.
Next Meeting Tuesday, January 16th. 8pm, probably Mike's place.
Currently Evaluating [ET301 SiRF III Evaluation Board], just GPS module available from SparkFun for $59.95
Looking at 3 axis accelerometer, possible 2 axis yaw rate gyros
- 802.11a - poor range, good bandwidth, questionable tolerance of motion
- Bluetooth - lower bandwidth, [sparkfun claims 100m range]
- Antenna - can it be integrated in metal body? will it work through metal frame?
- other technologies?
- Want Floating Point
- AVR with FPU?
- ARM and PPC?
- power efficient i386?
- Steel rod
- aluminum tube
- sheet metal with plasma cut holes (available large enough?)
- clear plastic (polycarbonate, acrylic)
- recycled grocery bags (polyethylene?)
- current prototype 2.5 ft diameter
- larger diameter would give a more significant impression, maybe 4 feet
- taller than bicycles makes them more visible
- have to tradeoff weight, shipping constraints, cost, power
- illuminate entire sphere or a few regions in one color each
- make straight line persistence of vision array which forms images while sphere is moving forward
- make rotating display attached to outer shell which forms circular display as ball spins
- Mechanical noise makers
- Bleepy R2D2 noises, simple synthesis with midi tracks
- sampled sounds, in memory with midi triggers. could be animal sounds, voice, instruments, etc.
- streaming audio tracks with high bandwidth communications
- Ultrasonic Sensors to detect and evade obstacles
- IR sensors to seek humans
Mother ship :
- GPS base station
- central computer control
- power generation
Green Man Ideas
- Photovoltaics, built into mothership. Possible rent with insurance
- pedal power generation
- pedals drive mothership
- power meter on mothership indicates proportion of Green Power.
- power up at Illumination Village to avoid seperate generator
- Green Man motif in sphere surface and mother ship
- biomimetic behaviors (see below)
- school of fish
- ant swarm
- bee swarm
- flock of geese
- dolphins and sharks
- spheres change appearance - light, shape
- ballet - involve choreographer
- stand in line for cofee
- vibrate to show emotion
- mating behavior
- different sized spheres with different roles- mother/child, warrior, drone, etc.
- orrery - orbiting planets
- sinuous smooth motion is important, avoid jerky motion
- autonomous behavior - machine vision and learning
- seek humans, solicit pedalers