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This is my second attempt of a remote firing ignition system on a RC airplane. Basically what you are looking at here is a kanthal coil made from a piece of khantal wire wrapped around a screwdriver to match the diameter of the fuse.
Once you apply 12 volts, the coil will instantly reach very high temperatures. The biggest challenge is to find a way of controlling each ignition seperately, but luckily hobbyking have made this really easy with this device. This is a multiswitch which lets you control 7 different outputs from just one port in your receiver. This makes you able to control each ignition seperately by using 1 switch on your transmitter. I made 3 of these ignition
systems on each wing, meaning I only use 6 out of the 7 outputs.
The build process was quite time consuming due to all the soldering. The main reason for this is because the
multiswitch can only supply 500mA for every output, because of the current restriction I had to use relays
to decrease the amount of current drawn from the outputs.
Reloading 6 fireworks doesn't take more than a minute. The first round didn't go very well, as the fireworks got stuck in the wing. For the second attempt I decreased the friction between the foam and fireworks. This time 5 out of 6 fireworks actually fired. 100% of the fuses was ignited, however some of the fireworks were defecetive.
Multiswitch: www.hobbyking.c...
Relays: www.ebay.com/it...
Khantal wire: www.ebay.com/sc...
Next episode will be remotely firing the fireworks while the plane is actually flying.
Hope you like the video and don't forget to subscribe: www.youtube.com...
Music: Tobu - Colors [NCS Release]
Used camera/s:
Sony Alpha a55 and GoPro Hero 2
Video Editing Programs:
Lightworks