# Making a weather balloon with a Raspberry Pi

## Producing an accurate model

### Factor that must be accounted for

• Mass of objects to lift
• Volume of helium to use
• Density of helium
• Pressure of helium
• Temperature (Affects pressure)
• Air
• Pressure
• Density
• Temperature
NOTE to Andrew:
You don't need to include the volume of the Pi rig when calculating the bouyancy force as only the volume of the balloon is relevant