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Post by Trip Rodriguez on May 8, 2016 20:55:02 GMT
I was wondering what it would take to add a fan to the motion sim to blow air in your face based on telemetry in open cockpit aircraft and cars. In a car it would simply speed up or slow down based on vehicle speed. In aircraft it might be more complex as propwash would be the main factor I'd think.
My motion sim project is a 6DOF Stewart platform just like Stevant's, and using Thanos electronics.
Thanks for any info and advice!
Trip
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Post by tronicgr on May 9, 2016 2:23:47 GMT
Hi,
This will require a combination of speed value output from the software as well a dedicated 1axis controller for the fan. The fan has to be 4 wire with PWM and Tachometer feedback so you can control it with PID. I did that before with 24v fan.
It cannot be added on the amc1280usb as its not easy to decode the single speed axis from the 6dof coded motion signals as it is.
You will have to use a separate controller, perhaps an arduino uno. I have build a arduino based PID 24v fan controller before for automatic temperature control, but its easy to be adapted for simulation.
Thanks Thanos
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Post by Trip Rodriguez on May 9, 2016 6:03:35 GMT
Thanks Thanos! Sounds like maybe more trouble than it's worth, any estimate of total cost for me to make this work?
Also, speed output should be easy for driving, but for flying would it be overly complex to drive the fan speed given that prop speed and airspeed factor into it?
Thanks for your time Thanos!
Trip
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Post by tronicgr on May 9, 2016 14:58:23 GMT
I don't think it's too complicated or expensive, the hard part is to read the speed values from the motion software.
The parts would be 1x arduino uno, 1x 24v 4-wire fan, and a 1A 24v PSU.
You can interface the PWM and Tacho lines directly to the arduino.
There are examples in x-sim and xsimulator forums how to drive a fan with PWM but if you add the Tacho and the PID you can maintain certain speed for the fan or even kick-start it if the RPM is too low for the fan to spin.
Thanks Thanos
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Post by Trip Rodriguez on May 9, 2016 18:35:47 GMT
Thanks again Thanos, I'll have to talk to you more about this when I'm ready to give it a try =). Sounds like it's going to be a go for wind in my face =D. Looking forward to some open cockpit biplanes and a Lotus 7!
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Post by Trip Rodriguez on Nov 14, 2016 10:01:23 GMT
My Stewart rig is moving and now it's time to look to the next steps!
In addition to the fan I'd like to add an actuator to tighten the shoulder harness to simulate negative G's. Would I then get two Arduino UNO or something else? I'm even considering possibly adding a full G-seat as well. Would I get one PCB to do all of this or separate ones? I don't really know anything about Arduino and similar so I'm hoping you guys can point me in the right direction to get me started.
Does anyone have experience with running a 6DOF plus G-seat at the same time? How much of a problem is it on the software side etc.?
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Post by carbon on Dec 14, 2016 21:52:55 GMT
My Stewart rig is moving and now it's time to look to the next steps! In addition to the fan I'd like to add an actuator to tighten the shoulder harness to simulate negative G's. Would I then get two Arduino UNO or something else? I'm even considering possibly adding a full G-seat as well. Would I get one PCB to do all of this or separate ones? I don't really know anything about Arduino and similar so I'm hoping you guys can point me in the right direction to get me started. Does anyone have experience with running a 6DOF plus G-seat at the same time? How much of a problem is it on the software side etc.? Yes just use a Ardunio, not that hard. I'm just finishing off a Gseat module for my 6DOF (just the back of the seat to start with) which uses RC servo motors. Simtools will easily run it via another interface (already test that), but V2 is better as you can separately configure the forces from the other 6 axis's (V2 can configure up to 12 axis). You could build a harness tightener in a similar way - just add another Ardunio driven via another Simtools interface.
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