tx/rx cutting out
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tx/rx cutting out
Hoping for some assistance please.
I have a HPI E-Firestorm running Futaba 2.4G radio, Hobbywing EZrun 60A ESC with 4000KV motor and Zippy 5000 30C 3S lipos. Runs great too. I have upgraded to a bigger fan on the ESC to cope with 3S, and this is plugged into the power source on the Futaba's receiver.
The problem I have is that the signal from the Futaba tx to the rx is cutting in and out. Batteries in the tx and the lipo are fully charged. I thought I was possibly getting interference (even though it's 2.4G). But then I unplugged the fan running off the rx and the problem went away.
Has anyone else experienced similar and if so, what is the fix? Should I run the fan directly from the battery or ESC lead?
Thanks.
I have a HPI E-Firestorm running Futaba 2.4G radio, Hobbywing EZrun 60A ESC with 4000KV motor and Zippy 5000 30C 3S lipos. Runs great too. I have upgraded to a bigger fan on the ESC to cope with 3S, and this is plugged into the power source on the Futaba's receiver.
The problem I have is that the signal from the Futaba tx to the rx is cutting in and out. Batteries in the tx and the lipo are fully charged. I thought I was possibly getting interference (even though it's 2.4G). But then I unplugged the fan running off the rx and the problem went away.
Has anyone else experienced similar and if so, what is the fix? Should I run the fan directly from the battery or ESC lead?
Thanks.
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RE: tx/rx cutting out
Yeah, you may need to supply the Rx with its own power(though that seems really strange with a 3S battery). You can also try a capacitor:
http://www.teamnovak.com/tech_info/p...power_caps.htm
http://www.teamnovak.com/tech_info/p...power_caps.htm
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RE: tx/rx cutting out
You've got too much current being pulled through the receiver by the servo, fan and the speed control for the speed control's internal BEC to keep up. The BEC is actually under more stress with more voltage because it has to step down 11.1 nominal volts to 5.5-6v rather than 7.4 nominal volts to 5.5-6v. On 2s, ThunderbirdJunkie would wager your truck would act better, if not properly, with the rest of your current setup being the same.
The best fix would be an external BEC, like the Castle BEC.
http://www.horizonhobby.com/Products...rodID=CSECCBEC
The best fix would be an external BEC, like the Castle BEC.
http://www.horizonhobby.com/Products...rodID=CSECCBEC
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RE: tx/rx cutting out
ORIGINAL: ThunderbirdJunkie
You've got too much current being pulled through the receiver by the servo, fan and the speed control for the speed control's internal BEC to keep up. The BEC is actually under more stress with more voltage because it has to step down 11.1 nominal volts to 5.5-6v rather than 7.4 nominal volts to 5.5-6v. On 2s, ThunderbirdJunkie would wager your truck would act better, if not properly, with the rest of your current setup being the same.
The best fix would be an external BEC, like the Castle BEC.
http://www.horizonhobby.com/Products...rodID=CSECCBEC
You've got too much current being pulled through the receiver by the servo, fan and the speed control for the speed control's internal BEC to keep up. The BEC is actually under more stress with more voltage because it has to step down 11.1 nominal volts to 5.5-6v rather than 7.4 nominal volts to 5.5-6v. On 2s, ThunderbirdJunkie would wager your truck would act better, if not properly, with the rest of your current setup being the same.
The best fix would be an external BEC, like the Castle BEC.
http://www.horizonhobby.com/Products...rodID=CSECCBEC
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RE: tx/rx cutting out
ORIGINAL: ThunderbirdJunkie
No, it's got a preset 5v output, and can supply up to 8a at 5v ITBJRC.
No, it's got a preset 5v output, and can supply up to 8a at 5v ITBJRC.
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RE: tx/rx cutting out
Finally received the Castle BEC (postage from the US to Australia is a nightmare).
One question before I install it....will this affect the 'low voltage cut-off' on my ESC?
Thanks.
One question before I install it....will this affect the 'low voltage cut-off' on my ESC?
Thanks.
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RE: tx/rx cutting out
Nope, not at all.
For a clean install, ThunderbirdJunkie prefers to open the case (if applicable on your ESC) and run the wires for the BEC directly to the solder posts on the board for battery power. On an MMM, ThunderbirdJunkie soldered them to the bottoms of where the wires are soldered to the board.
You can also bump up voltage with the BEC via a Castle Link.
For a clean install, ThunderbirdJunkie prefers to open the case (if applicable on your ESC) and run the wires for the BEC directly to the solder posts on the board for battery power. On an MMM, ThunderbirdJunkie soldered them to the bottoms of where the wires are soldered to the board.
You can also bump up voltage with the BEC via a Castle Link.
#9
RE: tx/rx cutting out
ORIGINAL: ThunderbirdJunkie
Nope, not at all.
For a clean install, ThunderbirdJunkie prefers to open the case (if applicable on your ESC) and run the wires for the BEC directly to the solder posts on the board for battery power. On an MMM, ThunderbirdJunkie soldered them to the bottoms of where the wires are soldered to the board.
You can also bump up voltage with the BEC via a Castle Link.
Nope, not at all.
For a clean install, ThunderbirdJunkie prefers to open the case (if applicable on your ESC) and run the wires for the BEC directly to the solder posts on the board for battery power. On an MMM, ThunderbirdJunkie soldered them to the bottoms of where the wires are soldered to the board.
You can also bump up voltage with the BEC via a Castle Link.
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RE: tx/rx cutting out
Thanks to all for their help. I took a slightly different route with the BEC installation, choosing instead to feed power direct from the BEC to the servo. Used the advice contained here... http://www.msuk-forum.co.uk/topic/107870-bec-faq/. Thanks again.
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RE: tx/rx cutting out
So I went for the first proper run today with the new castle bec. The bec is wired to the battery cable and feeding power direct to the servo, while the receiver is feeding the steering signal only to the servo.
The problem I am having is that every time I come off the throttle, the steering locks to the left. It's like something is interfering with the steering signal.
I'm using a 2 channel Futaba 2.4G system. Ch1 is for steering, Ch2 is for throttle. It has an auxiliary slot which I use to power a bigger fan on the ESC.
Can I use this slot to plug the BEC into (as per option 1 in the diagram of pg1 in this thread) or is this auxiliary slot only designed to output power, rather than receive power?
The problem I am having is that every time I come off the throttle, the steering locks to the left. It's like something is interfering with the steering signal.
I'm using a 2 channel Futaba 2.4G system. Ch1 is for steering, Ch2 is for throttle. It has an auxiliary slot which I use to power a bigger fan on the ESC.
Can I use this slot to plug the BEC into (as per option 1 in the diagram of pg1 in this thread) or is this auxiliary slot only designed to output power, rather than receive power?