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-   -   Futaba 7PX (https://www.rctech.net/forum/radio-electronics/985758-futaba-7px.html)

bratan 01-09-2022 09:50 PM

So I have another one for you guys, how do I turn off battery fail safe voltage? Won't let me set it below 3.8v which is kinda high

Roelof 01-10-2022 01:57 AM

https://futabausa.com/wp-content/upl...018/09/7PX.pdf

Page 59, there is something about Battery f/s on/of, but you could have found that as well.....

bratan 01-10-2022 06:41 AM


Originally Posted by Roelof (Post 15862521)
https://futabausa.com/wp-content/upl...018/09/7PX.pdf

Page 59, there is something about Battery f/s on/of, but you could have found that as well.....

I have and I cant figure it out. I tried turning telemetry off but nothing changes

Roelof 01-10-2022 07:28 AM

Telemetry has nothing to do with it. In the failsafe menu after each channel you can switch B F/S on or off.

My T7XC is still running firmware 2.3 and the battery failsafe is in my transmitter shown as AC-FS after each channel

But why is 3.8v not low enough? Are you running 1S LiPo? if so, then the BEC of the ESC is still providing 5v? No failsafe is needed.....

bratan 01-10-2022 12:32 PM


Originally Posted by Roelof (Post 15862600)
Telemetry has nothing to do with it. In the failsafe menu after each channel you can switch B F/S on or off.

My T7XC is still running firmware 2.3 and the battery failsafe is in my transmitter shown as AC-FS after each channel

But why is 3.8v not low enough? Are you running 1S LiPo? if so, then the BEC of the ESC is still providing 5v? No failsafe is needed.....

All chanels are on off, I'm using 4s lipos for buggy and truggy, ideally 3.4 per cell cutoff is ideal in my opinion. With this setting right now I'm not sure if I could make 8min main, haven't timed it tho. Just hoping I can resolve this.
I've read like 20last pages and noone mentioned this problem.

Roelof 01-10-2022 01:30 PM


Originally Posted by bratan (Post 15862729)
All chanels are on off, I'm using 4s lipos for buggy and truggy, ideally 3.4 per cell cutoff is ideal in my opinion. With this setting right now I'm not sure if I could make 8min main, haven't timed it tho. Just hoping I can resolve this.
I've read like 20last pages and noone mentioned this problem.

You are making a huge mistake. The battery failsafe is only for the total voltage the receiver gets. Because tha is provided through a BEC of the ESC it does not measure the votage of the 4S battery pack and so has totally nothing to do with the voltage per cel. If the BEC provids 6V it will stay 6v, even when the 4S battery comes under voltage (under 12v = 3v/cel). In this case you can keep the Failsafe off and program the LVC within the ESC.
The battery failsafe is mor important with gas powered cars where the receiver and/or servo\s stop moving when the battery goes too low.

bratan 01-10-2022 02:42 PM


Originally Posted by Roelof (Post 15862748)
You are making a huge mistake. The battery failsafe is only for the total voltage the receiver gets. Because tha is provided through a BEC of the ESC it does not measure the votage of the 4S battery pack and so has totally nothing to do with the voltage per cel. If the BEC provids 6V it will stay 6v, even when the 4S battery comes under voltage (under 12v = 3v/cel). In this case you can keep the Failsafe off and program the LVC within the ESC.
The battery failsafe is mor important with gas powered cars where the receiver and/or servo\s stop moving when the battery goes too low.

Strange thing is that both cars are cutting @3.8 per cell, this wasn't the problem before

Roelof 01-10-2022 03:40 PM

That is not the receiver, check the LVC setting of the ESC.

Roelof 01-31-2022 02:23 AM

You can plug in a headphone if needed.

speedpunk 04-05-2022 10:28 AM

7pk 8.2 software
 
Has anyone used the 8.2 software on the 7pk?

What did they change?
Iam on 7.0 version now.

Thanks for any help.

Speed 8 04-05-2022 12:12 PM


Originally Posted by speedpunk (Post 15892039)
Has anyone used the 8.2 software on the 7pk?

What did they change?
Iam on 7.0 version now.

Thanks for any help.

The update manual for v8.2 has a pretty accurate changelog (starting at page 2); Document can be here; http://www.ripmax.com/Futaba_Upgrade...X-UP_V8_2E.pdf

Roelof 04-05-2022 12:19 PM


Originally Posted by speedpunk (Post 15892039)
Has anyone used the 8.2 software on the 7pk?

What did they change?
Iam on 7.0 version now.

Thanks for any help.

You can just read the document that comes with it with the list of changes per update

https://futabausa.com/wp-content/upl...e_Letlock-.pdf

iliveinyourhead 12-22-2022 12:10 PM

Does anyone know if / where Futaba posts the details of their firmware updates? I'd like to know what changes before blindly updating.
Thanks!

Speed 8 12-22-2022 01:31 PM


Originally Posted by iliveinyourhead (Post 15967015)
Does anyone know if / where Futaba posts the details of their firmware updates? I'd like to know what changes before blindly updating.
Thanks!

The update manual has a pretty complete changelog in it; Click!

Roelof 12-22-2022 01:34 PM


Originally Posted by iliveinyourhead (Post 15967015)
Does anyone know if / where Futaba posts the details of their firmware updates? I'd like to know what changes before blindly updating.
Thanks!

Did you ever read the previous posts of this topic??????? maybe you should......
Online with the update there is also a document with the manual how to update and a change log.

Mainly all the updates are for SBUS options.


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