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HelicopterMain Discussion › Want to use Fut 9Z radio for robotics
01-02-2010 08:39 PM  7 years agoPost 1
Kiwi King

rrApprentice

Next to the water heater, behind the trash can.

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Ok, here's the situation: I have a 9Z and 9C radio I use for my helis, no problem. Lately though, I got it in my head to do some 'ground based' appilcations and want to use my radio (either one) for robotics. Specifically, I'm interested in making a tank/rover contraption and my design calls for some flexibility on the radio side of things. Here's my questions:

1) Can I get a 'module' to plug into my radio for the 'ground based' frequencies? This is the module that plugs into the back of the radio. Do they make them? Will these modules be geared towards robotic applications? If so, where do I get them. I'd rather not try to use my heli programming to make my ground based application work, I don't want to be on the same frequency that is used by the plank and heli guys. I thoug there were frequencies to be used by the airborne guys, and other frequencies used by the car, boat and robot guys.

2) Does anybody know of some decent websites they use for roboitics? I've been to servo city, and pololu and they seem pretty good.

3) I'm interested in using a tank tread design, and I think I need a separate motor/transmission for each tank tread (right and left) so it will turn, rotate and do tank stuff. Will I need a separate speed controller for each? The onel I'm interested in is the Tamiya 70168 double gearbox kit.

I would appreciate help in this little project, I'm in the design and planning stage now. Its been a while since I've gotten back into this, as life work and the wife seem to take up time.

REgards to all, happy new year.

-=+{}+=- The K.

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01-02-2010 09:17 PM  7 years agoPost 2
Hughes500PilotrrKey Veteran - Anaheim, CA - My Posts: All  Forum  Topic

1. Yes. Futaba makes (made) them. If you are using a 9C radio, any TJ module on 75MHz will work. If you are using the 9Z, you must use a TK module on 75Mhz.

Or, if you are a Ham Radio Operator, you can leagally use any TP or TK module on 50Mhz for either ground or air.

Futaba sold 75 MHz modules on any ground frequency. Just buy the one you want. However, ever since 2.4 gig cam out, they dont make nearly as many (if they even still make them).

If you can not find a 75MHz module, you can send "your own" 72 Mhz module into Futaba and they will convert it to any ground frequency you want. It cost $20. Of course you will have to buy a 75 MHz receiver or have one converted as well.

Go to http://www.futaba-rc.com and type "ground convert" into the search box. All your questions will be answered.

2. not sure

3. Tamiya makes a DMD (Dual Motor Drive) for their 1/16 scale tanks. Sounds just like what yor looking for.

You can also look on ebay. Click the link below for a $64 clone DMD unit.

http://cgi.ebay.com/R-C-1-16-1-15-T...=item5885458bac

I hope this helps. -Steve

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01-02-2010 09:18 PM  7 years agoPost 3
dkshema

rrMaster

Cedar Rapids, IA

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I don't see any 75 MHz "ground" modules on the Futaba website for the 9C/Z radios, so if you're wanting to stay in that band, no.

But Futaba does make the 2.4 GHz FASST modules for the 9C/Z, as does Spektrum (to allow you to use your Futaba TX with Spektrum DSM2 receivers).

In the 72 MHz world, channels 11 - 60 were for airborne use only (in the 72 MHz range) while a batch of channels up in the 75 MHz range were set aside for surface use only.

-----

I'm not so sure the same separation is required for 2.4 GHz operation, it is interesting to note that Spektrum makes "air" and "surface" versions of the DSM2 system. They appear to use the same spectrum allocation, but the protocol used in sending/receiving is different so you can't use an air transmitter with a surface receiver.

-----

In any event, the module is a transmitter RF section only with some signal processing to handle the PPM signal out of the buddy box port to get the modulation for the RF section.

But the modules themselves will provide no "robotic" applications for your TX. All of the intelligence is still in the transmitter/encoder section and has nothing to do with the RF module that you use. So no, the new modules will NOT give you anything different in your transmitter than what you already have.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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01-02-2010 09:29 PM  7 years agoPost 4
Kiwi King

rrApprentice

Next to the water heater, behind the trash can.

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Ok, thanks for the information. I'll poke around for a TK module for my 9Z. I was thinking that when I get one and plug it into the radio, it will determine that it's a 'ground' module, and the menu on the radio will change accordingly. You both helped me out a lot, and I appreciate your responses.

Regards,

-=+{}+=- The K.

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01-02-2010 09:39 PM  7 years agoPost 5
Hughes500Pilot

rrKey Veteran

Anaheim, CA

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Nope, nothing changes with your radio when you change the module other then the frequency output. -Steve

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