Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: pterrus on June 19, 2014, 08:56:36 PM
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So I recently acquired this thing (http://imgur.com/gybSUXv) for cheap and the plan is to mount an arm kit or something to it and make it into an RC robot. What I need is a transmitter that has at least 4 channels (2 for drive/steering and at least 2 for the arm servos).
The problem is I'm a total RC noob and have no idea what to buy. I gather the crystal on my base is 27.145 MHz. I've looked at stuff like the FlySky FS-T6 (http://www.amazon.com/gp/product/9269807304/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A2VS8HDVIIQ0HN) but it's unclear to me that this will do what I want. When it says 2.4 GHz, is that the crystal frequency or something else? Should I not be looking at digital transmitters? Am I even asking the right questions? Googling isn't getting me anywhere, so any recommendations/clarification would be helpful!
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2.4 GHz would be the frequency it transmits on, and you seem to think that your vehicle receives on a frequency of 27.145 MHz. That's not going to work.
Digital vs. analog transmitters? You need to find out what your receiver needs and then get a transmitter to match. If the thing you bought is one of those low cost RC vehicles with a receiver that connects directly to DC motors (and not RC servos) it may be more work than you think.
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That's what I was afraid of. Let's say I do find a transmitter that transmits on 27.145 MHz. Can I reasonably expect that it will be able to talk to the chepo RC truck base? Or is it likely to want commands in some proprietary format?
I am trying to avoid building my own motor controller if I can help it, in case that wasn't obvious. I've done it before, but it was a pain. :)
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Without know what RC receiver is in that truck and how the motors are controller we really can not make suggestions.
If there is a separate motor control circuit that uses a 'standard' Servo control signal (1-2ms pulse every 20ms) then you can replace the existing RC receiver with the one that matches the FlySky T6.
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Thanks for the help guys. I think I'm going to buy this one (http://www.amazon.com/gp/product/B001BCC6S0/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER). If it doesn't happen to work out of the box (seems unlikely) then I'll figure something else out.