Hi, my name is Raphael, I live in Montreal, Québec, Canada. I speak French so I'm sorry if my English is a bit off sometimes. I did two cosplays prior of this amazing project: a mandolorian from Star Wars and the Phoenix Five version of Colossus.
So here comes my big project : The Iron Patriot ! As seen in Iron Man 3. I have yet to start the suit, but I want to get my head around the electronics before starting anything. So... Things I want
- opening helmet as in the movies (with the lights and everything) - the moving cannon (as the one Honus made for the Predator's cannon) - and I'de like everything to be voice commanded
So bow if someone could help me by telling my how much (approx.) it will cost me and by giving me a few tips as I am a total newbie with electronics.
Thanks a loy guys for any tips, advices or comments.
Everything you want to do is totally possible. I haven't personally done voice command but I know it's possible. The biggest drawback to voice command systems is the latency- it takes time for it to recognize the command and then complete the task so it always appears to act slowly.
Regarding the moving cannon as in the movie it moves side to side along the back, up/down and rotates. Are these the same movements you want? Do you want the cannon to have a firing light and sound effect. Even though I made a head tracking system of sorts I've found it's much better to have the cannon move in a programmed sequence- it's easier to set and build and it's far more reliable. What servos you use will greatly affect the cost of your system. That cannon is really big so the lighter weight you can build it the better.
For the helmet I'd probably budget around $200 and for the cannon around $500. These are just very rough estimates but that's probably in the ballpark. The cost could go up or down significantly depending on the servos you use and your method of voice control.
No side to side definitely makes it easier and less expensive. The head tracking I made using the sensor from a Wii Nunchuck doesn't truly track your head position- it tracks the movement of your head with respect to gravity so you have to tilt your head when you rotate it. It's kind of faking the side to side (yaw) movement. The up and down (pitch) movement works fine.
Getting actual head tracking working while wearing a costume is really complicated because you have full body rotation that you need to take into account. In my mind it just wasn't worth the cost/complexity so I decided to see if I could achieve a head tracking effect at a much lower cost.
The only way I can think that you would incorporate voice command into this system is to have your command turn it on and off by switching the arduino board on and off using a transistor or a relay. You could also probably use voice command to make it fire.
Well, if all I have to do is tilt my head as I turn it, I'm good with that, as long as it looks good ! And that's kind of ehat I was hoping with the voice command. ( ex: Jarvis, open mask. Jarvis, activate cannon. Jarvis, fire at will !)
One Arduino can support multiple outputs. The trick is that sometimes it cannot control multiple outputs at the same time. If your cannon is to be controlled with head tracking I'd use one Arduino for that and then use another Arduino for your helmet.