Old Futaba tx pinout? - RC Groups
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Jun 24, 2010, 08:57 AM
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Discussion

Old Futaba tx pinout?


Found this pinout for the Futaba FP-TP tx module that's in the 3PJ, 7U, 8U, 9C & 9Z:

looking at the back of the transmitter, antenna pointing away from you:

left side
#1 PPM
#2 switched battery positive
#3 RF good (pulled low through a transister when signal is present at the final amp)
#4 ground
#5 RF out
right side

I knew my old 3EGX modules were 10 pin but when I opened one to have a look the pins are tied together so the result is only 5 inputs to the module:




So using the same orientation as previous, pins 1/2, 3/4, 5/6/7, 8/9, 10 feed the tx. Any idea whats what? Any way to find out?

Guess you figured where this is going. Here's the FASST unit that replaces that FP-TP module:

http://www3.towerhobbies.com/cgi-bin...&I=LXUMU0&P=SM
Last edited by Terry Keeley; Jun 24, 2010 at 10:11 PM.
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Jun 24, 2010, 11:51 AM
The pin 10 modules we have here don't match this pin out.

1, 3, 5 are PPM, +B, and GND with the other pins not tied together.
Jun 24, 2010, 12:33 PM
Registered User
Quote:
Originally Posted by JimDrew
The pin 10 modules we have here don't match this pin out.

1, 3, 5 are PPM, +B, and GND with the other pins not tied together.
Thanks for taking time to reply Jim, I sent an e-mail asking if you had a 10 pin module for me, I have my answer!

So just to be sure, looking at the module in the center of the picture from the left:

1&2 = PPM

3&4 = +9.6v

5/6/7 = GRD

What about:


8&9 = ?

10 = ?

Or have I completely misunderstood and you're quoting YOUR pinout?
Jun 24, 2010, 01:05 PM
Inciting Riots
village_idiot's Avatar
I would do nothing until putting an oscope, and meter on the tx and seeing what is what.
Jun 24, 2010, 10:12 PM
Registered User
Quote:
Originally Posted by village_idiot
I would do nothing until putting an oscope, and meter on the tx and seeing what is what.
Thanks, can you point me to some info on the subject?
Jun 28, 2010, 10:05 AM
Registered User
Anyone?


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