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09-22-2011, 10:13 PM | #1 |
Pebble Pounder Join Date: Mar 2011 Location: SLC
Posts: 181
| switched rx, now stuff isn't' working
here's the deal. I bought a used scx10 a few months ago. The guy threw in an HPI 27mhz TX/rx. It's worked, although it's been quite glitchy the last few months. Anyway, I was going to go out crawling today, but decided I'd hurry and switch the rx to a Spektrum SR300 that I have, that came in a Losi Mini SC truck I got recently. I wanted the 2.4 to reduce the glitching. I swapped it all out, but got nothing in response. I thought maybe it was a binding issue, but that wasn't it. I rebound things, and it worked in the Losi, but not in the SCX. I hurried and put the HPI rx back in, but when I did, it wouldn't do anything either...no sterring, no throttle. I tried switching around again, and tried different variations of shutting things off, etc. I finally got steering to work on the 2.4ghz, but stil can't get the throttle...and I can't get either steering or throttle to work on the HPI that I've used for the last few months. Does anyone have any ideas? I have a Tekin FX-R esc, a CC BEC in it also. The servo is a Savoy (or whatever brand that is) I am pretty clueless on electronics, and can't figure out what has happened, or how to fix it. Any ideas? |
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09-22-2011, 10:19 PM | #2 |
Got Worms? Join Date: Jun 2009 Location: Golden, CO
Posts: 6,116
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Your plugs plugged in, in the proper orientation? Every time, if you plugged one in backwards you may have fried something.
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09-22-2011, 10:32 PM | #3 |
RCC Addict Join Date: Jul 2009 Location: reelsville
Posts: 1,871
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More than likely that's it, the ESC or everything is in backwards.
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09-22-2011, 10:34 PM | #4 |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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On either radio, did you recalibrate the ESC to the TX/RX?? When you plug into the RX, is the black or brown wire towards the outer edge of the RX case? |
09-23-2011, 07:00 AM | #5 | |
Pebble Pounder Join Date: Mar 2011 Location: SLC
Posts: 181
| Quote:
I just checked, and the way I left it last night,all the brown wires (both throttle and steering) are to the outside of the rx. The black wire is also to the outside (on the bind plug) The ESC is in a Traxxas waterproof box...all i see is a red light through the top that is kind of "strobes"...but that's all it does. I opened the box and did the "one touch radio calibration" from the FX-R instructions...holding down the mode button did nothing...the light continued to strobe red. I really am not familiar with electronics....and bought it used as stated,so I'm not 100% sure on how good everything is. I certainly hope I didn't fry this thing. | |
09-23-2011, 07:05 AM | #6 | |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Quote:
Then do the recalibration, which is usually, full throttle wait for a light/chime, full reverse wait for a light/chime, neutral. | |
09-23-2011, 07:55 AM | #7 |
I wanna be Dave Join Date: Aug 2006 Location: under a rock and a hard place
Posts: 5,443
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Pull the bind plug after binding ??????
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09-23-2011, 08:22 AM | #8 |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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Check the FXR manual here..... http://www.teamtekin.com/manuals/FXManual.pdf You can also try swapping the steering servo to the throttle channel and use the throttle instead of the wheel to see if the throttle channel is working on the radio. |
09-23-2011, 09:10 AM | #9 |
Pebble Pounder Join Date: Mar 2011 Location: SLC
Posts: 181
| I don't have a bind plug...I've just used the power to the rx. I will try switching the throttle/steering to make sure it works. At one point yesterday I had done that on the HPI rx, cuz when I hit the throttle it turned...however that was on the HPI one, not the Spektrum. I will mess with some of the recalibration suggestions when I get home...if anyone else has suggestions feel free. I really hope I haven't fried it...I don't have the money to pay for repairs just yet. |
09-23-2011, 09:57 AM | #10 |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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Then How are you binding it? A bind plug is just a servo connector with the two outside wires connected, you can make one if you dont have yours.
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09-23-2011, 02:22 PM | #11 | |
Pebble Pounder Join Date: Mar 2011 Location: SLC
Posts: 181
| Quote:
How do I bind it with a new truck? I assumed it was simply a matter of putting the new rx in to the truck and making sure the tx was bound to the rx. Do I need to do more in terms of binding to the truck itself? I can use the bind plug from the sc (what the Spektrum came out of) to bind it again...if I need to do more to bind it to the truck. I really am pretty damn clueless with this stuff. Is there an RC electronic for Dummies book out there? I | |
09-23-2011, 02:35 PM | #12 |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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Normally if you swap the RX & TX together from rig to rig, you DON'T have to rebind them, it dosen't matter what rig they're in. But, that radio has been known to lose it's binding even if it has just been sitting in the rig. Try to rebind the RX & TX, then, recalibrate the ESC and see what happens. |
09-23-2011, 03:02 PM | #13 | |
Pebble Pounder Join Date: Mar 2011 Location: SLC
Posts: 181
| Quote:
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09-23-2011, 06:27 PM | #14 |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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Ok, if the steering works then the tx and rx are bound. You need to calibrate your ESC and then you should be good.
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09-24-2011, 07:33 AM | #15 |
Pebble Pounder Join Date: Mar 2011 Location: SLC
Posts: 181
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Ok, guys, I'm still running intosome issues. Last night I was able to get a little further...but still am having some trouble. I finally got it to register the calibration. It beeped,and like the instructions say, it found "neutral" LED4 would flash to LED1. However, it still wasn't working. I then continued the calibration by holding down "mode" for 3sec. It flashed and chimed like it said. Then LED6 started to flash. At this point it tells me to hold the throttle "wide open" or whatever. I did that, however this is where I was struggling. It says to hold it until you hear the chime,at which point it will return to neutral,then LED1 will flash,and you are supposed hold it on full reverse. However, I held throttle fully open for quite a while and no chime. I waited for about 2 minutes....and maybe that's my problem....How long does it take? 2 minutes sitting there holding the throttle seemed really long considering all the other chimes and process took seconds. Do I need to hold it longer? I checked the troubleshooting guide, and it mentions if there is steering and no throttle then LED1and LED3 will blink, which wasn't happening. I even went and did the setup cuz LED6 was blinking, and made sure the voltage was set right. I made sure it was set for the NiMh battery I have. (LED1 was lite) So the main question is how long do you have to hold the tx throttle fully open? Also, it suggested that a problem if LED6 flashed(which it ony did whenI restarted the calibration...and it says it will do that in the instructions) that the it may not be getting a rx signal...but during this whole process the steering was working. Lastly...I even checked to make sure it wasn't in "pit mode" I followed those instructions and it said when you turn it off (mine has no switch, just deans plugs,so I unplug it to turn it off) that it will exit pit mode. I'm at a loss, and it seems like it's working....I just don't know how long I have to hold open the throttle....I did for quite a long time, but maybe it's not long enough. Anymore suggestions? |
09-24-2011, 07:49 AM | #16 |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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You should only have to hold full throttle for a few seconds, NOT 2 minutes. Maybe your throttle is reversed, try the recalibration again, but hit reverse instead (do opposite from what the directions say.) See what happens. If that works, you need to reverse your throttle channel on the TX and recalibrate correctly. Report back. |
09-24-2011, 08:03 AM | #17 |
RCC Addict Join Date: May 2008 Location: Chicago/Bloomington
Posts: 1,505
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Look for a switch or control on the radio that is used to reverse the channels. Once you find it reverse the throttle channel and then try callibrating the ESC.
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09-24-2011, 01:09 PM | #18 |
Pebble Pounder Join Date: Mar 2011 Location: SLC
Posts: 181
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ok, I played around with it some more. Still no go on the throttle. Just to make sure everything was working, I plugged the rx back in to the sc truck it came out of and it worked fine. I made sure my trottle switch was set to normal, and that it was working fine....I plugged it back into the SCX and it would steeer but no motor. I then plugged the motor directly into the battery, and it ran fine..so it's somewhere in the connection (already figured that, but just eliminating everything else). Could it be the CCBEC? No matter what I do, the FXR doesn't go past LED6 flashing. I also connected in the HPI am rx to see if I could get that to work. nothing there as well. Here is what I did there. I plugged the steering into slot1 and throttle into slot 2. Then for the power, I plugged the black/white wire (from the fxr) into the bind. This is on the HPI. On the Spektrum SR300, I plug the steering and throttle into their marked slots and the black/white wire into the AUX. That is the way I can get the fxr to at least start the recalibration. As I've said I'm still new to all this stuff....so I hope this is all correct. Any other ideas? I really do appreciate the help guys. |
09-24-2011, 01:16 PM | #19 |
I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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I really, really, really (did I say "really" yet???) doubt the CC BEC has anything to do with it. Is the BEC wired into the RX or direct to the servo (my 1st choice)?? Frankly, I still think you need to look at the last page here.... http://www.teamtekin.com/manuals/FXManual.pdf , I think it's a LVC issue..... |
09-24-2011, 02:24 PM | #20 | |
I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
| Quote:
What is the deal with the black and white going to the bind? Here is what you need to do...
You have the FXR's signal wire plugged into the bind port, of course it isnt getting channel 2's signal... Alternatively if you want to run the BEC directly to the servo pull the signal wire out of the servo's connector (white or yellow typically...Opposite of the darkest wire) plug that into the RX in the correct slot for channel 1. Now run the remainder of the servos plug to the bec for power only. When using this method you must put the red wire from the fxr back in as the FXR will be powering the rx and the BEC will only power the servo. Last edited by SMR 510RR; 09-24-2011 at 02:27 PM. | |
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