FrSky FAS-100 Telemetry Amperage Sensor

 marcelo 2 points

I echo your words!!! Hi HK. Is it now the correct 100A sensor or is it really the 40A under the sticker?

 Roger 4 points

still waiting the answer

 Simon 3 points

I bought one from the old batch and it was a 40A in disguise. Just received one from the new batch and it was the 100A sensor. Hope that answers your queries.

 nabla 1 points

Just received one and it's a real 100A sensor. Very solid construction and PCB traces correctly designed to handle this power. I think it's heavier than 24g declared but I don't have measured it.

 Roger 4 points

I also just received one FAS100 sensor few days ago. I don't opened yet and don't tested. I will post a reply...

 Simon 3 points

I just received one from the new batch and it's the proper 100A sensor.

 joe 12 points

I got the same thing. It is actually a FAS-40. The BATT and ESC positions are opposite between the FAS-100 and FAS-40. It took me a lot of time and frustrated effort checking with a scope and terminal program before I realized it is just an FAS-40 with a FAS-100 label! This could lead to fires if you put 100 amps through. WATCH OUT! I figured this all out and opened a support ticket with Hobbyking. They said thanks and closed the ticket! Unreal! They didn't even offer to send me the proper sensors. I have also informed Frsky.

 Michael2 158 points

Yes I found out that Mistake and they also do not check!

 Michael2 158 points

THAT IS THE ANSWER FROM FRSKY: Dear Michael, Thanks for your e-mail and support. There is one batch of 120pcs FAS-100 provided to HobbyKing that with the same PCB size as FAS-40 but they are true FAS-100 and could measure 100A without problem. They have been well tested, but were put on the wrong label - the BAT and ESC positions should be opposite. Sorry for the trouble and thank you again for your report and support. Best regards! FrSky Team

 joe 12 points

I got the same response. However there is a current shunt on this device and an FAS-100 has a hall effect sensor instead of shunt. There is no voltage loss on a true FAS-100 but I get a significant voltage loss on this device when I run high current. At least we know it won't catch fire but it sucks that we didn't get what we paid for.

 Rainer 1 points

Hi, this means mine will work when I change the connectors motor/batterie? So easy? Because I am very anoid about this none working sh.t I did not even open yet a ticket with them.

 Michael2 158 points

PROBLEM WITH THAT WRONG CONFIGURED FAS ?? (SEE PICTURE "DEFECT FAS 100" IN THE FILES ! I have 2 Versions of these. The old one is working perfectly a FAS100. But the new one FAS 100 much smaller than the old one is not working from beginning. I opened a Request and make Videos for HK. They give the money back after control. Than I opened the FAS100 and I was wondering, what I see. On the circuit board is written 40Ampere and not 100Ampere???? I bought a FAS100 !!! And a 40Amp FAS you cannot order/is not in the store from HK and not listed???? So from where is that product. Than I make recherches in Google and I find a FAS 40AMP in a specialised store for FR-SKY. What is going on here with HK??? Is there nobody controling what they buy?

 alex.khoroshko 385 points

No, not the only. Lots of people don't have a telemetry - they use wattmeter for ground tests of motor power (to make sure the power/current is right), and then they fly without any current monitoring. To use telemetry, you'll need telemetry receiver and transmitter, also the screen to view it. The only option for you is to find the PPM signal in your module tray and connect the transmitter with the screen (ID DHT-U) to it and buy separate receiver ID: D8R-II. then you'll be able to connect surrent sensor or voltage sensor directly to a receiver, or you can buy the telemetry hub and connect a lot more other sensors - look for frsky telemetry listing.

 Gavin 1 points

Ok, I'm still a bit confused. Short of running beside my rc car with a clamp meter, I don't see how I can simulate my gear train/weight to get an idea of the current I would be pulling. Is there such thing as an rc dyno? Also I don't understand anything after ppm. Please explain? Thanks.

 alex.khoroshko 385 points

Sorry, missed your post, hope it's not too late. For a car, it seems that it's hard to estimate the current - you should google for similar configurations like yours to find out the motor current before you buy it. If you already have a motor, you can use the power meter - most of them can register the peak values - that's what you need. As for telemetry. I personally love the frsky for its price and functions. You can connect DHT-U (enter this ID into your HK search field) to the pins in tray of your transmitter. Google for "DHT-U V2.0 USER GUIDE pdf", open page 7 and you'll see how to connect the wires. DHT-U goes without receiver, so you need to buy it separately ID: D8R-II. Second option is to use DFT module (ID: DFT). Google for youtube video "HobbyKing FrSky 2.4 GHz Futaba Module mod for Hitec Optic6" to see, if this option good for you. This combo has a receiver, but has no screen, so you need to buy it, ID: FLD-02. The receiver itself doesn't measure the current. So you'll need the current sensor in any case, ID: 236000007 . It was in backorder for 2 months and now it is in stock, so if you're going to buy it - hurry.

 alex.khoroshko 385 points

Do you want to achieve 200A maximum measurable current? The most simple way is to connect one battery through current sensor and the second one directly to ESC. You will get approximately half the current through your FAS-100. mAh estimation would be correct (half of the total consumpted power).

 Michael2 158 points

PROBLEM WITH THAT WRONG CONFIGURED FAS ?? (SEE PICTURE "DEFECT FAS 100" IN THE FILES ! I have 2 Versions of these. The old one is working perfectly a FAS100. But the new one FAS 100 much smaller than the old one is not working from beginning. I opened a Request and make Videos for HK. They give the money back after control. Than I opened the FAS100 and I was wondering, what I see. On the circuit board is written 40Ampere and not 100Ampere???? I bought a FAS100 !!! And a 40Amp FAS you cannot order/is not in the store from HK and not listed???? So from where is that product. Than I make recherches in Google and I find a FAS 40AMP in a specialised store for FR-SKY. What is going on here with HK??? Is there nobody controling what they buy? Also Joe: I got the same thing. It is actually a FAS-40. The BATT and ESC positions are opposite between the FAS-100 and FAS-40. It took me a lot of time and frustrated effort checking with a scope and terminal program before I realized it is just an FAS-40 with a FAS-100 label! This could lead to fires if you put 100 amps through. WATCH OUT! I figured this all out and opened a support ticket with Hobbyking. They said thanks and closed the ticket! Unreal! They didn't even offer to send me the proper sensors. I have also informed Frsky.

 faccan 19 points

The picture is Wrong, it just came with the wire. Anyway is a great sensor. Best Regards.

 Theunsie 149 points

I had the same problem when I just went and connected it the day I bought it. You must update the software in your display unit so that calculate the correct ratio and display the correct reading. I love this device so much, I removed the telemetry hub and now run the sentry unit and amp unit directly to my receiver. It displays the amps battery voltage and mah capacity used

 serranito 16 points

Thankyou Theunsie! I will do it!

 faccan 19 points

Yes JKMRS, it came with just the wire. Best regards.

 Captain P2A 35 points

Hi thiomir,
Yes you can daisy-chain it with other devices like voltmeter (FLVS-01). the answer to your question is on frsky website : (add www before) frsky-rc****/ShowProducts.asp?id=127.
Hope it helps!!

 lofty 20 points

Yes it can it connects in the same place as the sensor hub on the D8R-II Plus. The digital stream RX port instead of the hub.

 MJBENNETT9 86 points

I don't have my setup yet, but i see lots of posts on skipping the use of the telemetry hub. But it is needed if you have several devices, right? or you daisy chain devices and skip the hub? I'll be getting GPS, voltage, altitude, amp100, etc. sensors.

 Luffy 57 points

no it can not be used in stand alone mode
it must be connected to rx back to tx.

 Blue Angel 1464 points

This sensor is for inflight or ground use, but every time in combination with telemetry receiver. On the display of the FrSky transmitter module or the FLD-02 LCD display you can see live the current or mAh consumption. The DHT-U transmitter module does have logging onto sd-card too. So you can download the data to the computer.

 Arman 375 points

I think smoking sensor because 100A is allot of power

 Blue Angel 1464 points

the deans will melt. *-)

 Michael2 158 points

INFORMATION: It does not melting away! You must take other connectors and it will work with 100A short time about 2 minutes. But if you drive with more than 100A you will need "2" LIPOS parallel used. If you want to measure you can put the SENSOR into the way of only one of from the lipos and you measure only the HALF AMPERE and so you can use that one to measure up to 200A. You understand?

 Michael2 158 points

PROBLEM WITH THAT WRONG CONFIGURED FAS ?? (SEE PICTURE "DEFECT FAS 100" IN THE FILES ! I have 2 Versions of these. The old one is working perfectly a FAS100. But the new one FAS 100 much smaller than the old one is not working from beginning. I opened a Request and make Videos for HK. They give the money back after control. Than I opened the FAS100 and I was wondering, what I see. On the circuit board is written 40Ampere and not 100Ampere???? I bought a FAS100 !!! And a 40Amp FAS you cannot order/is not in the store from HK and not listed???? So from where is that product. Than I make recherches in Google and I find a FAS 40AMP in a specialised store for FR-SKY. What is going on here with HK??? Is there nobody controling what they buy? Also Joe: I got the same thing. It is actually a FAS-40. The BATT and ESC positions are opposite between the FAS-100 and FAS-40. It took me a lot of time and frustrated effort checking with a scope and terminal program before I realized it is just an FAS-40 with a FAS-100 label! This could lead to fires if you put 100 amps through. WATCH OUT! I figured this all out and opened a support ticket with Hobbyking. They said thanks and closed the ticket! Unreal! They didn't even offer to send me the proper sensors. I have also informed Frsky.

 Elmardus 12 points

No, this is not for display on video goggles. It would be much simpler to get an OSD with current sensor. Why would you want to if an OSD is much easier?

 Blue Angel 1464 points

No, it cannot be used. Only for the FrSky Telemetry System.

 DriesRC 285 points

thanks bro

 bastelspezi 232 points

yep, stupidest decision ever! therefor i will not buy any display at all, and will use an android via bluetooth

 Blue Angel 1464 points

A new firmware for the FLD-02 was released yesterday. Now the display shows mAh. :-) FrSky is listing to customers. *)

 bastelspezi 232 points

thanks mate

 martini 24 points

Where can I download it?

 Blue Angel 1464 points

www.link

 Blue Angel 1464 points

****

 Riva8406 70 points

Yes, thanks Angel. I found it on the RCGroups forum.

 Blue Angel 1464 points

You are welcome. I uploaded the file here for everyone now. Posting a link here is not that easy.

 stewjw 232 points

To upgrade the FLD-02 you also need to buy the FrUSB-3. I've lost my patience with this device. I already have a voltage sensor connected to my OSD so this is superfluous. For the moment I'm still using the FLVS-01 connected to the data hub to display the cell voltages on my FLD-02 but I can't set alarms using this method. I mainly use FLD-02 for the RSSI alarms. I like the FrSky products but this one is a bit screwed up.

 stewjw 232 points

On reflection my criticism above is unfair it does what it says. Although for flying amps are not as important as volts to show battery drainage, and there are cheap battery voltage sensors available where you can set alarms.

 bastelspezi 232 points

just learn how to solder

 KaosKane 1442 points

plug in ur iron lol

 DownUnderPilot 103 points

Actually it would be better to not come with any connectors, just wires. I wouldn't recommend Deans type connectors over 80A anyway.

 KaosKane 1442 points

downunder i was thinking the deans maxed at 60A thanks

 Theunsie 149 points

Kaoskane you are right mate I have no idea why they fitted Deans instead of XT60 connectors but no problem, its like everything else there is always something to modify, guess its part of the hobby

 KaosKane 1442 points

Good skills i would not try to solder on the board i would use plug adaptors and this would make the A loading problem worse lol :}

 Riva8406 70 points

Well, the version I received this week does not have DeanT anymore, just wires. You can now solder the connector you want !

 KaosKane 1442 points

All Good

 Michael2 158 points

PROBLEM WITH THAT WRONG CONFIGURED FAS ?? (SEE PICTURE "DEFECT FAS 100" IN THE FILES ! I have 2 Versions of these. The old one is working perfectly a FAS100. But the new one FAS 100 much smaller than the old one is not working from beginning. I opened a Request and make Videos for HK. They give the money back after control. Than I opened the FAS100 and I was wondering, what I see. On the circuit board is written 40Ampere and not 100Ampere???? I bought a FAS100 !!! And a 40Amp FAS you cannot order/is not in the store from HK and not listed???? So from where is that product. Than I make recherches in Google and I find a FAS 40AMP in a specialised store for FR-SKY. What is going on here with HK??? Is there nobody controling what they buy? Also Joe: I got the same thing. It is actually a FAS-40. The BATT and ESC positions are opposite between the FAS-100 and FAS-40. It took me a lot of time and frustrated effort checking with a scope and terminal program before I realized it is just an FAS-40 with a FAS-100 label! This could lead to fires if you put 100 amps through. WATCH OUT! I figured this all out and opened a support ticket with Hobbyking. They said thanks and closed the ticket! Unreal! They didn't even offer to send me the proper sensors. I have also informed Frsky.

 Blue Angel 1464 points

Yes, you can use it without the hub. You can use the FrSky CelL monitor with this current sensor too, without the hub. :-)

 Romushock 462 points

Does somebody know what kind of sensor has it inside? Thks

 DarrenH 474 points

You can unsolder the deans connectors and put whatever you like.

 seedo 103 points

or i can not to buy it XD

 crash55 27 points

or use some hobby king deans to TX 60 adaptors

 Sockrat 178 points

2 reasons: 1) There exist no TX60 connectors 2) XT60 connector at const. 90-100A without 10awg wire as a heat sink will melt and burn this device.

 Riva8406 70 points

Well, the version I received this week does not have DeanT anymore, just wires. You can now solder the connector you want !

 Michael2 158 points

PROBLEM WITH THAT WRONG CONFIGURED FAS ?? (SEE PICTURE "DEFECT FAS 100" IN THE FILES ! I have 2 Versions of these. The old one is working perfectly a FAS100. But the new one FAS 100 much smaller than the old one is not working from beginning. I opened a Request and make Videos for HK. They give the money back after control. Than I opened the FAS100 and I was wondering, what I see. On the circuit board is written 40Ampere and not 100Ampere???? I bought a FAS100 !!! And a 40Amp FAS you cannot order/is not in the store from HK and not listed???? So from where is that product. Than I make recherches in Google and I find a FAS 40AMP in a specialised store for FR-SKY. What is going on here with HK??? Is there nobody controling what they buy? Also Joe: I got the same thing. It is actually a FAS-40. The BATT and ESC positions are opposite between the FAS-100 and FAS-40. It took me a lot of time and frustrated effort checking with a scope and terminal program before I realized it is just an FAS-40 with a FAS-100 label! This could lead to fires if you put 100 amps through. WATCH OUT! I figured this all out and opened a support ticket with Hobbyking. They said thanks and closed the ticket! Unreal! They didn't even offer to send me the proper sensors. I have also informed Frsky.

 benybee 34 points

you can.. if you know the data protocol..

 MasterB 134 points

Would be nice to give different connector options... XT60, EC3 etc.