Difference between revisions of "FPV"
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# Power- and signal-wiring separated as much as possible | # Power- and signal-wiring separated as much as possible | ||
#* Noise from motor can degrade digital signals if coupled with signal-wires | #* Noise from motor can degrade digital signals if coupled with signal-wires | ||
# Shielded components and twisted | # Shielded components and twisted wires to eliminate noise and oscillation | ||
#* Minimize both ambient noise and interference from nearby components, think of a long wire as an antenna | #* Minimize both ambient noise and interference from nearby components, think of a long wire as an antenna | ||
# Frequency of video-transmitter on a higher band than RC-transmitter | # Frequency of video-transmitter on a higher band than RC-transmitter | ||
Revision as of 13:37, 14 January 2011
Flying electronic RC planes from the ground is fun. Piloting a FPV plane from First Person View is really cool. With the arrival of light and powerful video stream transmitters and long range remote RC transmitter modules , the range of flight has increased from line-of-sight to an order-of-magnitude wider.
Research
To build a reliable platform I want to begin with the fundamental basics and then extrapolate more specific products.
- One energy-source, single set of batteries
- Minimized weight, as batteries contribute as the heavies components
- Parallel 3S 11.1V Lithium-ion Polymer batteries, both on plane and ground station
- Prevents voltage drop if one cell is bad
- Power- and signal-wiring separated as much as possible
- Noise from motor can degrade digital signals if coupled with signal-wires
- Shielded components and twisted wires to eliminate noise and oscillation
- Minimize both ambient noise and interference from nearby components, think of a long wire as an antenna
- Frequency of video-transmitter on a higher band than RC-transmitter
- Lower frequencies will have longer wavelengths that propagate further
- Video-transmitter, as well as RC-receiver, powered by 5V voltage from main Lipo-batteries
- When the main engine batteries are drained, for 3S the low voltage limit is 9.6V, the rest of the system can still function
- Clone aileron servo signal to use two servos per wing
- Prevent loss of control on servo failure, must be mounted close together to drive force-drive the dead servo, might drop this
- Proper cooling of video-transmitter using an appropriate heat-sink and thermal-adhesive
Gear
Video systems
- Lawmate - Range of different models
- EagleEyes
Control systems
Transmitters
- EzUHF Transmitter - 433 MHz frenquency, 200mW or 600mW power
Receivers
- EzUHF Receiver - 4 or 8-channel, diversity signal/dual antenna
- Duo 2500 Diversity Receiver
On-Screen Display =
- EzOSD
- ET
- DOSD
Planes
- Zephyr - Foam base
- Multiplex Easystar - Simple glider-plane [1]
