CMOS Checksum error. What is it a checksum of? The entire content of the CMOS data? Some specific parameter data? What type of checksum is it? Is it CRC-8?... something else? I understand that this error indicated a checksum mismatch. But what is the second checksum that the CMOS checksum is being compared to? Why do these two checksums need to match?
All our blimps are filled with the inert gas helium. Helium gas is non flamable, non combustible and non toxic. Since it is a compressed gas, the only danger comes from improper handling of the cylinders when moving them or improperly using the pressure regulator. If a hole does develop the blimp will not dramatically fall and cause injury.
What are the operating cost of the blimp? The cost to operate a blimp are nominal. Helium can be obtained from a local welding supplier and helium sells for around $100.00 per 250 cuft tank. After the initial helium fill of the blimp, the envelope will periodically need to be refreshed with more helium. Over time some air will displace a portion of the helium causing the blimp to fly heavy. The air can be purged with out completely deflating the blimp using only a small amount of helium. The motors of an indoor blimp run off rechargable NMH battery packs that need only a 120-volt outlet to recharge.