Helicopter- Why the EFlite Blade CX
It is small, light weight, modifiable, and parts are cheap and readily available at the local hobby shop or on eBay. The Blade CX is considered an indoor outdoor, meaning I can test the helicopter indoors during inclement weather, and a Ready To Fly (RTF) helicopter, so limited set up is necessary. It is also a twin rotor design with counter spinning blades, meaning there is little learning curve when flying. This will make it much easier to program for as the helicopter should be a stable starting platform. Also I already have one.
I picked the CX over the CX2 model as the CX uses standard FM signals over the CX2’s 2.4 GHz. This means that even though I lose the ability to jump frequencies, the helicopter’s operation will not be affect by, or affect nearby 2.4 GHz systems, such as wireless LANs, Bluetooth, or other common devices.
The blade CX has a 300ft out door unobstructed range. This can be enhanced with a more powerful radio, but 300ft is plenty for demonstration purposes.
Wireless Camera- Why the ZT-811T
This is a small camera with a 2.4ghz/900mhz frequency. I would rather the 900mhz, due to wifi interference and future implementations, however i do need to use it as 900mhz needs “line of sight” to work while the 2.4 ghz seems to just have reduced quality and range. Since this camera is needed for seeing out of the “cockpit”, just incase you need to navigate treacherous airspace with precision, or you lose sight of the copter and just want to know what its doing and where its going, this is very necessary. The near VGA quality means that the image comes out large and clear. Also, as it is a pinhole camera, focusing won’t be a problem unless you are viewing it in a low light situation. Specs are below
· Iris Automatic
· Exposure Automatic
· Focus Adjustable 30 mm to Infinity
· Validity Pixel: NTSC - 510x492
· Resolution 380 Lines
· Horizontal Viewing Angle 52 Degree
· Effective Range 300-1000ft
· Voltage 9 to 12 volt DC (receiver)/6-9 volt DC (camera)
· Power Consumption 200 mWatt (camera) 200 mWatt (receiver)
· Current Consumption 200 mA (camera) 500 mA (receiver)
· System NTSC ONLY
· Operation Duration of Camera 8 hours on 9 volt Duracell or Energizer
· Dimensions 20mm x 20mm x 20mm
· Video Output Through RCA Video Cable
· Minimum illumination 3 Lux
Microcontroller board.for output
This is still under evaluation with my friend who is an EE. Looks like I’ll have to be soldering. At the moment, we’ve jumped form analog outputs to digtal outputs with a digital pot for each joystick control.