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I am looking for a simple homemade 4 channel remote/transmitter and a system to control 2 servo motors
The remote needs to be no larger than 4x4x1.5 and have about 3 switches on it.
Going for pushbutton control, you'd just have full on/off - is that what you want?You may find it easier to use a cable from a servo horn/arm, rather than a rack and pinion setup.
You can buy simple 4-channel sets with a key chain transmitter cheaper than you can build it yourself and HF is absolutely not for beginners.The kill button should probably be a relay with wolfram/tungsten contacts or have serious snubbing at the contacs.Quote from: ktsheo on January 15, 2012, 09:22:16 AMThe remote needs to be no larger than 4x4x1.5 and have about 3 switches on it. 4x4x1.5 what? feet, inches, centimeters, mm?
I would think something like a momentary on/off/on would work best for me (similar to electric windows in a car) This would allows me to turn the servo in either direction (throttle up or down).
I am guessing a "servo horn/arm" would be something like a 180 or 90 or 60 degree rotation? I thought about that but I was not sure what kind of distance I would need cable to pull.
As for the "strength" it would need, It is not much at all. most of the time, the throttles are very sensitive
As for the 4channel transmitter that you speak off... you have a link to what you have in mind?
The Kill button would not be hard to do, I figured a relay like you said would be simple enough. I am not too worried about the kill switch (yet).
For the transmitter, those dimensions are in Inches (sorry for the confusion). I just want something the size of a cell phone or something that can be held in one hand or clipped to a belt and not be awkward.
I am a fast learner, if you have any products in mind, feel free to share the links!
I am also now thinking about making a tracked actuator. A simple geared servo spinning a threaded rod that has a moving platform with internal threads that would slide up and down the threaded rod as the servo spins. Make sense?
Ok... option A) The "Hobby King" cheapoThe transmitter would have to be "repackaged" for something smaller and more ruggedThe transmitter hast to be water proof, so I am thinking that would be hard to get this version to be able to do that. I like how simple the receiver is! this one is the only one that I can see servo direction change occurring easily. What about the others
Option B) "Seco-Larm" 4 button transmitterThe size and style is perfect for what I am thinkingCan the buttons be "easily" programed to control a horn/arm? how can I get to change directions?
4 Separate Channels / 4 Output Modes Each: a. Timed Momentary (1, 2, 3, 4, 5, 10, 30, 60 sec.) b. Toggle (On/Off) c. Latch (Output stays on until manually reset) d. Continuous or Validity (Output for as long as signal is received)All outputs are independently controlled. (i.e. Channel 1 can be toggle, Channel 2 can be one second momentary, etc.)
Mode switch (one per channel):Enter Learn Mode: Press tact switch.Learn Transmitter Code: Within 15 seconds of entering learn mode press button 1 and hold for 3 seconds.
Option C) http://www.solidremote.com/products/69-rf-remote-control-transmitter-3-channel-w-50-150m-range-waterproof-model-sr-tx-113.aspx The fact this one is water proof makes me really like this one! Is the matching receiver as easy to use as option A?
Extreme Durability - Rubber buttons eliminate damage caused by electrostatic discharge and helps make transmitter water resistant. Gold-plated battery clips and contact points extend the life of the transmitter.
Back to the "kill switch" the reason I am not too worried about it is because my "project" will have 2 people... one controls the throttle from a distance away, and another "supervises" the engine. There is also no blade on this engine... (sorry for being secretive)