crimson , yellow , or green will betoken the level of diesel or exhaust in the aura , while creatively shed light on the scene at a nighttime assembly . If your balloon are mostly red , I ’d suggest relocating to a less polluted locale .
If you have some canonical electronics / bonding skills and the ability to buy a FigaroAir Quality Sensor , an 8 rowlock PICAXE microcontroller and DIP socket , a rechargeable lipo electric battery , a 10 K or 100 K resistor , and a tri - coloured light-emitting diode , you may build one of these guy rope yourself . you may line up the precise steering to recreate these balloon over atInstructables . [ InstructablesviaBoingBoing ]
Balloon
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