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Jul 04, 2010, 01:00 PM
Stress Be Gone
GBR2's Avatar
I see that HiModel now has the HV receivers listed but nothing to do with telemetry yet.
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Jul 04, 2010, 08:36 PM
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wallaguest1's Avatar
hello, any one know if its possible extract the full PPM frame from just 1 port with this system?

thnk you very much
Jul 05, 2010, 01:17 AM
Registered User
Unfortunatelly now, me too investigated, there is no PPM pad in the receiver.
Last edited by renatoa; Jul 05, 2010 at 01:59 AM.
Jul 05, 2010, 03:13 AM
Registered User
Quote:
Originally Posted by wallaguest1
hello, any one know if its possible extract the full PPM frame from just 1 port with this system?

thnk you very much
Hi,
Yes, it is possible and would be available to do this from FrSky V8 series V8FR (8 channel) and V8R7 (7 channel).

Thanks and regards!
Eva
Jul 05, 2010, 11:39 PM
Registered User
I bought my frsky system (futaba 8U tx module, two 8-ch. receivers and one 4-ch. receiver) from Himodel website in China. Shipping was $11 to Arizona with EMS and I got the package in five days.

Installed the 4-ch. receiver into my Parkzone Radian glider, it was a straight replacement for Berg 72mhz 4-ch. micro receiver, about same size and pin layout. Stuck the short antenna in the styrofoam fuse but didn't get a good range check, about 5 yards. So I made a hole in the side and routed the antenna thru the hole outside and got about 26 yards of range check. Flew the glider until it was about 1000' feet up, which is the max altitude I fly it at. No problems with reception high or low. Oriented the tx antenna horizontal with ground pointing to my left for best effect.

I then range checked my GP stick 40 converted to electric power and got more than 30 yards with the two receiver antennas 90 deg. and far away from each other in the fuse. One of them runs to the back horizontally with fuse and other rests on bottom of fuse parallel with wings. That one is among some servo/esc wires. Both rx. antennas remained inside the fuse. I cut two pieces of coffee straws (the thin red ones), put masking tape on them and epoxy them to the fuselage then routed the antennas thru the straws to hold them to the fuse in 90 deg. orientation to each other. After I was satisfied with the range check, I flew the stick to about 1000' again, no problems either high or low to the ground. My field has metal chain link fences (about three feet tall) on both near and far sides of the runway and no glitches on landings. I don't run failsafes on either plane as escs have their own failsafe.

I had no problem flying either plane and they flew just as well if not better on 2.4ghz as on the 72mhz Futaba 8U I was using before. Reason for going with 2.4 ghz was so that I wouldn't be shut down by other flyers or suffer interference. Never had problem with 72mhz at my field but I just bought a gasser and want it to be 2.4 ghz just to be safe. Will test fly frsky more in the coming days and I'll then put the receiver that's in the stick plane into the gasser. In my limited testing, the frsky is proving to be very good and inexpensive system. Two thumbs up
Jul 06, 2010, 12:27 AM
Registered User
Quote:
...I don't run failsafes on either plane as escs have their own failsafe.
The ESC failsafe will activate if the Rx stops sending it PPM command pulses. However the Rx will keep sending command pulses even if it loses contact with the Tx. That is why you should always set the Rx throttle failsafe to cut the motor. These are two different forms of protection, the ESC built-in failsafe protects against a fault in the Rx or loss of power to the Rx. The Rx failsafe protects against loss of signal from the Tx.
Jul 06, 2010, 06:04 AM
The best in EDF since 2005
Extreme_RC's Avatar
Telemetry modules, recievers and accesories are all in stock! First shipment arrive yesterday, hopefully I will get some time to play with one this weekend, looks good though, Modules come with Serial cable free and CD rom software.
Latest blog entry: Extreme RC AUSTRALIA
Jul 06, 2010, 06:24 AM
Registered User
Prices in AUD, right ?
Jul 06, 2010, 06:58 AM
The best in EDF since 2005
Extreme_RC's Avatar
Yup, we only price in AUD.
Latest blog entry: Extreme RC AUSTRALIA
Jul 06, 2010, 01:28 PM
Registered User
I have total of six flights on the 8-channel receiver and I wrung the heck out of my stick in all orientations and altitudes and frsky is rock solid. Got two flights (about two hours) on the glider with the 4-ch. receiver and it too is rock solid after routing the last inch of antenna out of the side of the fuse. I'm very happy so far with frsky. Almost everyone at my club flies on 2.4ghz and no problems. We have about two to three people on the flight line most of the time. Most systems at my field are spektrums, very few hitecs and one frsky
Jul 06, 2010, 01:36 PM
Registered User
kgfly,

I have to investigate the failsafe more. I had it set up yesterday on the stick plane and when I did range check and went out of range, the esc added couple of clicks of throttle instead of none. Anotherwords, it would spin up the motor from idle for no reason. As soon as I took out failsafe the motor would stay shut off like it was supposed to. Don't remember if it shut off with motor running prior to going out of range. Have to revisit that one again. On the stick plane I have CC Ice Lite 75amp esc and they said when you lose range the motor will shut down without setting up the rx failsafe. I only care about the throttle servo going to idle and don't care about the flying surfaces. But I will play with it more and see if I can get it set without it going bonkers again. Thanks for the info.
Jul 06, 2010, 07:20 PM
60 years of RC flying
Daedalus66's Avatar
Quote:
Originally Posted by FlyStraight
kgfly,

I have to investigate the failsafe more. I had it set up yesterday on the stick plane and when I did range check and went out of range, the esc added couple of clicks of throttle instead of none. Anotherwords, it would spin up the motor from idle for no reason. As soon as I took out failsafe the motor would stay shut off like it was supposed to. Don't remember if it shut off with motor running prior to going out of range. Have to revisit that one again. On the stick plane I have CC Ice Lite 75amp esc and they said when you lose range the motor will shut down without setting up the rx failsafe. I only care about the throttle servo going to idle and don't care about the flying surfaces. But I will play with it more and see if I can get it set without it going bonkers again. Thanks for the info.
It helps when setting up failsafe to plug a servo into the throttle channel so you can see exactly what's going on.

It is essential, as kgfly says, to set failsafe to low throttle as flying out of range does not guarantee no signal to the ESC.
Jul 07, 2010, 12:43 AM
The best in EDF since 2005
Extreme_RC's Avatar
Its pretty simple to get into a habit of setting failsafe, I wait till the model is all assembled and checked then plug everything in and hold the button down till failsafe sets, then I hold the model, open the throttle a little and turn the Tx off to check the settings, the simplicity of setting and checking it is great.
Latest blog entry: Extreme RC AUSTRALIA
Jul 07, 2010, 09:30 PM
Stress Be Gone
GBR2's Avatar
Has anyone seen the telemetry sets available any place else except for Extreme RC in AUS??
Jul 07, 2010, 11:40 PM
Registered User
HiModel are showing them as new and in stock today.

= Mike
Jul 08, 2010, 12:12 AM
Registered User
SAME price as the old system ?! There must be a mistake !
LE: Just got a confirmation the prices are not valid, just placeholders by copy-paste the old combo position.
Will be updated today.
Last edited by renatoa; Jul 08, 2010 at 02:25 AM.
Jul 08, 2010, 01:42 AM
Stress Be Gone
GBR2's Avatar
Not from HiModel. Price is about $88 for Telemetry set and $52 for non-Telemetry set.
Jul 08, 2010, 02:23 AM
Registered User
As mine, but for EU customers only.
Jul 08, 2010, 02:40 AM
Registered User
Quote:
Originally Posted by RENATOA
As mine, but for EU customers only.
Can you comment on the Futaba module in the Robbe FX-30? I'm considering moving that way, and it would be good to know ahead of ordering one...
Jul 08, 2010, 02:47 AM
Registered User
I assume you mean the telemetry version, else a DIY hack module is available right now.
I posted a Futaba module uncased some days ago. You need PPM from your radio and that's all.
If you want more than 8 channels, and afford to wait for fall, and pay more then there will be a Fasst compatible line (with telemetry !) featuring the 14ch receiver.
Jul 08, 2010, 03:24 AM
Registered User
ebusyman's Avatar
Besides the vast difference in price, is there any significant difference in performance between the USB cable and the RS232/Serial PC Cable for FrSky Two-way Telemetry System?
Jul 08, 2010, 03:51 AM
Registered User
The telemetry sets are shipping, but I really think that FrSky need to get some accessories for them on the market quickly. As it comes, the only feedback is when it gets near the limit of it's range. Battery voltage sensing should be easy to implement for users who can knock up a voltage divider and solder a couple of resistors into a servo cable.
Beyond that, the telemetry market will be limited to electronics wizz kids.
With modern esc's incorporating battery sensing and voltage monitoring, surely it wouldn't take much to produce an auto-sensing battery monitor capable of working out the type and size of pack fitted, and generating the trigger levels to give say a two minute warning rather than the esc's lvc?
How about fuel level sensors, a single or double LED array to be attached to the tank giving a trigger when the fuel gets low?
I'd be interested to know whether Hitec's sensor station will be 'adaptable' for use with FrSky 2 way sets.

As for compatability, the 2 way TX module has a neat mini DIL switch for configuration, one switch giving 1 way/2 way rx modes. Anyone know what sort of life expectancy these type of switches have in frequent use applications?
Also the bind/range button is now much harder to activate accidentally while still easy enough to use intentionally. The fit in my Hitec Optic also seems better than my first gen 1 case was.

Bob
Jul 08, 2010, 03:56 AM
Registered User
Quote:
Originally Posted by ebusyman
Besides the vast difference in price, is there any significant difference in performance between the USB cable and the RS232/Serial PC Cable for FrSky Two-way Telemetry System?
Please, don't consider at all the actual prices from HiModel ! They are fake, in revision, just copy-paste of the old standard combo !
The USB cable will be in the $12-15 ballpark, and the voltage sensor $4-5.
Jul 08, 2010, 04:09 AM
Registered User
OK, the right prices are up at HiModel:
Telemetry DFT/D8R $94.30
RX-D8R FrSky Two-way 2.4G 8-Channel Receiver D8R $42.75
Battery Voltage Sensor for FrSky Two-way Telemetry System $5.03 Out of Stock
RS232/Serial PC Cable for FrSky Two-way Telemetry System $3.25
USB Cable for FrSky Two-way Telemetry System $14.59 Out of Stock
Jul 08, 2010, 05:50 AM
Registered User
Quote:
Originally Posted by BrumBob
The telemetry sets are shipping, but I really think that FrSky need to get some accessories for them on the market quickly. As it comes, the only feedback is when it gets near the limit of it's range. Battery voltage sensing should be easy to implement for users who can knock up a voltage divider and solder a couple of resistors into a servo cable.
Beyond that, the telemetry market will be limited to electronics wizz kids.
With modern esc's incorporating battery sensing and voltage monitoring, surely it wouldn't take much to produce an auto-sensing battery monitor capable of working out the type and size of pack fitted, and generating the trigger levels to give say a two minute warning rather than the esc's lvc?
How about fuel level sensors, a single or double LED array to be attached to the tank giving a trigger when the fuel gets low?
I'd be interested to know whether Hitec's sensor station will be 'adaptable' for use with FrSky 2 way sets.

As for compatability, the 2 way TX module has a neat mini DIL switch for configuration, one switch giving 1 way/2 way rx modes. Anyone know what sort of life expectancy these type of switches have in frequent use applications?
Also the bind/range button is now much harder to activate accidentally while still easy enough to use intentionally. The fit in my Hitec Optic also seems better than my first gen 1 case was.

Bob
I happened to email Frsky for your accessories question. They said that they are working on them and will release accessories in the future.
Jul 08, 2010, 06:45 AM
Registered User
Quote:
Originally Posted by bluety
I happened to email Frsky for your accessories question. They said that they are working on them and will release accessories in the future.
'in the future', much like Hitec, it is working for them and doesn't seem to have slowed sales down
Anyone know what capabilities the battery monitor will have?
Jul 08, 2010, 06:51 AM
mmmmm....BEER
Does anyone know if FrSky are going to release a 2.4G DIY/Hack module in the telemetry version?
Jul 08, 2010, 07:09 AM
Registered User
Quote:
Originally Posted by BrumBob
'in the future', much like Hitec, it is working for them and doesn't seem to have slowed sales down
Anyone know what capabilities the battery monitor will have?
The comparation with Hitec is cynical, to say the least...
I left Hitec exactly for this reason, they are close, I want to build my own system and can't. Here at least you have a chance... if you are ready to learn.
Complaining is not RTF on the shelf is far from this hobby spirit.

Any of the two ADCs feature an alarm trigger level, set from factory at mid range, i.e. 3.3V / 2 = 1.65V. You can reprogram it at 2V for example, using the provided app on the CD. For the default alarm trigger, to monitor a pack, you need two resistors having the value ratio as:
(low level voltage - 1.65V) / 1.65V
For example for a 3S pack and low voltage alarm at, say 3.3V, the resistor ratios should be:
(3 * 3.3-1.65) / 1.65 = 5
So, any resistor divisor as 1k and 5k or similar will do the trick.
The same must be done for Hitec too, I mean get a servo connector and do your OWN soldering, less resistors. But you have a single voltage only, FrSky has two
Jul 08, 2010, 08:26 AM
Registered User
Quote:
Originally Posted by BrumBob
'in the future', much like Hitec, it is working for them and doesn't seem to have slowed sales down
Anyone know what capabilities the battery monitor will have?
Believe me, technically, developing current/voltage sensors is much easier compared to developing a reliable 2.4G module. If FrSKY can have their telemetry module done in a few months, a set of sensor and sensor hub can be done in a very short time.

BTW Xjet has already posted his DIY hub and ground monitor for FrSKY. Since FrSky telemetry is open, you should not worry about the accessories, Model guys are always will to share (or show off?) their fancy device design .

Jul 08, 2010, 11:09 AM
Registered User
Quote:
Originally Posted by RENATOA
The comparation with Hitec is cynical, to say the least...
I left Hitec exactly for this reason, they are close, I want to build my own system and can't. Here at least you have a chance... if you are ready to learn.
Complaining is not RTF on the shelf is far from this hobby spirit.
Hi Renatao, please don't get me wrong. I am not complaining, just curious as to what modules will be available and when, A battery monitor would be easy enough even for a simpleton like me, as I've pointed out elsewhere. Like many in this hobby I'm not an electronics guru, I don't have the background, time or inclination to work out how to use the RS232 facilities. It seems Hitec have made a selling point of the telemetry, but from what I can see their accessories are pretty much planned 'future releases', not yet executed. I see ads, but always oos. I'd hate to see FrSky in the same boat. Yes, plenty of people are developing their own solutions, but to compete in the wider RC market, FrSky need off-the-shelf answers. Their gear is good enough, I've not had a glitch or failsafe since I got my hands on it(see the very first post in this thread for when that was), but most people want plug'n'play, not vapour ware whatever the brand on the label.
Personally, I'd like to see a low fuel level warning sensor, if that happens then great. If not I'll certainly play with the Hitec unit in an attempt to make it work with FrSky, but I'd likely blow a few up in the learning process. Past experience talking there!

ps "Complaining is not RTF on the shelf is far from this hobby spirit." - I'm afraid that for a large number of modellers these days you are very wrong!
Last edited by BrumBob; Jul 08, 2010 at 11:17 AM.


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