Logging Rx voltage

[GotballsP-38]

There are people with Spektrum Rx that are having brownouts and power failures. Is there a way to log the voltage of the Rx with the data logger, I am sure that many more would like t be able to log their Rx voltage and not their current.

Gotballs

[Francesco]

There are people with Spektrum Rx that are having brownouts and power failures. Is there a way to log the voltage of the Rx with the data logger, I am sure that many more would like t be able to log their Rx voltage and not their current.

Gotballs
I do it routinely with my Glide FDR, it's sufficient to power the FDR from the receiver and enable Rx voltage recording.

[billpa]

Hi All,

We will have a sensor soon that does this.

Regards,

Bill, for Eagle Tree

[GotballsP-38]

Hi All,

We will have a sensor soon that does this.

Regards,

Bill, for Eagle Tree

Bill,

I think that alot of the Spektrum users would really like this, I will post this reply to them. Thanks again.

Gotballs

[Pinecone]

So Bill, when will I get my evaluation one? :)

[kgfly]

Hi All,

We will have a sensor soon that does this.

Regards,

Bill, for Eagle Tree
What sample-rate will it use ? Anything less than 500 sample/s is probably not going to be adequate since even short voltage dips in the milliseconds range will cause a problem. 1000 sample/s would be a better plan.

This page shows a CRO trace illustrating the very short (approx 2ms) voltage dips that can occur when using digital servos: http://www.voltmagic.com/faqs.htm#PLV

[teamdavey]

And what will it run on during the "brown out"?

[Erik v. Schaik]

The Brown out issue with 2.4Ghz is not realy the source of this. I have made some shamesless copys in my A123 building thread regarding BEC issues:
start from post 152:
http://www.rcgroups.com/forums/showthread.php?t=725096&page=11

In Short: The BEC needs to be cool and capeable to handle the Amp draw. I think a temp sensor mounted on the BEC would be of more value as using a volt meter.

grtz, Erik

[TucsonClint]

And what will it run on during the "brown out"?

I would imagine the flight battery...
- Clint

[GotballsP-38]

The Brown out issue with 2.4Ghz is not realy the source of this. I have made some shamesless copys in my A123 building thread regarding BEC issues:
start from post 152:
http://www.rcgroups.com/forums/showthread.php?t=725096&page=11

In Short: The BEC needs to be cool and capeable to handle the Amp draw. I think a temp sensor mounted on the BEC would be of more value as using a volt meter.

grtz, Erik


So if you think that the BEC needs to be cool ;what about this?http://www.castlecreations.com/products/cc_bec.html
Click on the tough enough vid.
I was running this BEC and the RX had no connection. I really don't think that in 3 min I could cause a BEC to shutdown due to temp. BAT= 3s 4000mAh ESC 55amp, 4-HS-56 and testing a props? I am wating on an eagletree temp- micro to let you know about the temp of the BEC. I also have other post of what has happened. Thanks for the ideas.

Gotballs

[Hogster]

Sorry to bump such an old thread, but has a Rx-pack voltage sensor been released? If it has, the UK dealer of the eLogger don't stock it :( Would really be useful on my new Logo600 helicopter ....

http://rc-log.co.uk/index.php?target=categories&category_id=2

Cheers :)


David