When Ed Nauman fires his oxygen-propane cannon, anybody within range of the shock wave will definitely see stars. It's been known to shatter windows 30 ft to the rear! Propane is mixed with oxygen under control of a PIC microcontroller, in a barrel made from a 330 ft³ nitrogen tank and detonated by remote control. It's even instrumented to measure the kaboom — he's recorded 180 dB SPL (think two sticks of dynamite). Gadget Freaks, don't try this near your home (or your neighbor's)!
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Allied Part #
Microcontroller, PIC 16F876-20I/SP
RS232 Interface Chip, MAX233CPP
Solid-State Relay, Teledyne C60-10
Relay, 24V coil, DPDT 8A contacts
220 Ohm Resistor 1/4 W
100 Ohn Resistor 1/4 W
68 Ohm Resistor 1/4 W
4.99K Resistor 1/4 W
5.1K Resistor 1/4 W
1K Resistor 1/4 W
1K Resistor 1 W
11K Resistor 1/4 W
200K Resistor 1/4 W
5.62K Resistor 1/4 W
1 Meg Resistor 1/4 W
10K Resistor 1/4 W
3.01K Resistor 1/4 W
0.1 uF Capacitor
10 uF Electrolytic Capacitor
Empty 330 ft³ N2 tank, high-intensity microphone, regulators for 0
2 and Propane, anti-flashback check valves, plumbing and more — instructions coming soon
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