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Lawn mowers?Nice. What do you fly? John
jpanhalt said:Nice. What do you fly? John
Marks256 said:Do you think the 8 channel can be changed easily? I am not worried about the 4 channel one, as that will just
Also, what do you think the range is (line of site, unobstructed).
This is the kind of project you don't want to wait on, it's just too cool. If you get a car like my P.O.S. ('93 Sable), you've got your linear actuator included. Just use the power seat adjustment and attach the seat to the brake - it's not like anyone's going to be sitting there! If you want to get more "sophisticated," you could remove the driver seat and use some power seat motors to operate both pedals with an ad hoc mechanism of your own design.Marks256 said:Then maybe something a bit bigger, like maybe a real car (if i can find one that both runs and moves) Next thing i will need will be a linear actuator for the breaks.
Marks256 said:I just looked on tower hobbies. They don't have the Futuba T8UAF. I guess i will have to wait and see when i comes. I can't find the manual on google, either.
Hank FLetcher said:This is the kind of project you don't want to wait on, it's just too cool. If you get a car like my P.O.S. ('93 Sable), you've got your linear actuator included. Just use the power seat adjustment and attach the seat to the brake - it's not like anyone's going to be sitting there! If you want to get more "sophisticated," you could remove the driver seat and use some power seat motors to operate both pedals with an ad hoc mechanism of your own design.
That is what i was trying to avoid, but it may come in handy when i first get it.jpanhalt said:A simple on/off can be constructed from a microswitch with the servo arm actuating it.
jpanhalt said:Most people I know have gone to electronic versions, however. Here are some references:
**broken link removed**
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I have attached an image of the Guelph schematic. The Welwyn schematic is pdf and too big, but I have attached the explanation that downloads with it. It is really quite simple. You just set up your flip-flops to determine whether the pulse is longer or shorter than what you set the switch point to be.
Remember, the receiver does all of the decoding. If you have an oscilloscope, it is kind of fun to circuit trace the signals and see what the composite looks like when you wiggle the sticks. I have done that to show mixing to other fliers. Where the servos plug in, however, it is simply a single channel of PWM.
There is a variety of commercial switches made and many of the hobby sites have them. John
Oh, and thanks.
Marks256 said:So the receiver actually consists of two separate parts? The radio decoder, and then the signal from the decoder is sent to the PWM circuit? So in theory, i could just intercept the signal from the decoder before it is sent to the PWM to control my own stuff, instead of just having a PWM output?