LibrePilot Forum
Users => Vehicles - MultiRotors => Topic started by: Brassman on January 30, 2016, 07:13:06 pm
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Damn I just lost my ET 200 quad, was dark and I had just installed leds. it was windy and I was in rattitude mode and realized I was out of Control 200 meters away trottled up to gain hight but it just fell like a stone. I searcked for 2 hours but no luck, the crash must have ripped the battery out. Im gonna go out looking again at first Daylight, if Im lucky I will find it. it might be in a tree.
anyone ells lost ther quads? did you find ever it and how??
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That's a bummer. Hope you can find it!
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thanks. yeah, I looked for 3 hours this morning from first Daylight but I could not find it, I never gonna trust frsky v8fr_II reciever again after this. lost signal 150-200 meters away in line of site. Im pretty sure it was the reciver becouse the failsafes(trottle cut) kicked in and it just fell. strange thing I saw aproximatly were it Went down and I was in that spot within 2 minutes. next quad Im building will have the revolution board with oplink gps and all other stuff and im gonna have it connected to the laptop groundstation whenever I fly it, I cant afford to lose Another one. this is really a bummer
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Bad thing is that it got unpowered. I could recover my small quad several times by triangulating it's signal, using my Taranis. On those occasions I learned that it is very difficult to find a 250 quad even in slightly higher grass, you will only see it from a distance less than 5 m. Because of that I am now using a lost plane beeper whenever I fly at distances more than 50m. But that will not help with disconnected power, so first thing I alwas do is taking care that the battery will not easily disconnect: On my smaller quad I fix it wit velcro to the frame, and a tight velcro strip around. On bigger multicopters you usually have a battery compartment.
I wonder how a signal loss can happen in such a situation as you describe: I am flying my quads with Taranis and X8R usually at a range of 300-500m. I got a few weak signal warnings from my taranis, which always could be solved by repositioning the antenna on the quad. I never had a signal loss so far. I have different rx, but currently using only X8R receivers.
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Next time some of those might help
- Lost plane alarm, it works if battery does not get disconnected. This one is pretty loud http://www.banggood.com/Wholesale-Lost-Plane-Finder-Alarm-RC-Helicopter-Tracer-p-66590.html (http://www.banggood.com/Wholesale-Lost-Plane-Finder-Alarm-RC-Helicopter-Tracer-p-66590.html)
- GPS coords on OSD that is recorded with Fatshark's DVR if you have one. Just don't publish those online, you might get into trouble if local government has strict policies for flying.
- GPS coords over telemetry to your transmitter with high sampling recorded to sd-card in your taranis. This way you can recover the route or where you lost signal.
I personally think DVR feature on fatsharks is best for this, as you pretty fresh coords recorded in goggles.
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Thanks for the replys guys. I dident have any type of gps/telemetry on the quad. luckly this one was not that expensive....still a bummer as I was really hoping to find it...
I have the alarm on order but Im pretty sure the battery disconnected in the crash becouse I had really Bright leds on it and I dident see it. I dont have the Money for fatsharks, is there any other accurate way to get current or last known gps cordinates logged and save. cant I get it on my laptop LP gcs? I scooped the pines with binoculars but I could not see anything.
Im on a frsky converted hitec flash 5 radio with fully charged 3s Life battery so I cant trianguklate its signal I Think. the module has telemetry capabilitys if I get the gear for it.
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Thanks for the replys guys. I dident have any type of gps/telemetry on the quad. luckly this one was not that expensive....still a bummer as I was really hoping to find it...
I have the alarm on order but Im pretty sure the battery disconnected in the crash becouse I had really Bright leds on it and I dident see it. I dont have the Money for fatsharks, is there any other accurate way to get current or last known gps cordinates logged and save. cant I get it on my laptop LP gcs? I scooped the pines with binoculars but I could not see anything.
Im on a frsky converted hitec flash 5 radio with fully charged 3s Life battery so I cant trianguklate its signal I Think. the module has telemetry capabilitys if I get the gear for it.
Unfortunately there is no easy way to send telemetry data to frsky receiver from flight controller in LP yet, and even if there was you would still need external inverter, as the only one in the used micro-controller is usually occupied by GPS.
Easiest option would be buying Frsky GPS module which once connected to Frsky receiver can send telemetry data such as GPS position, Taranis can display that (don't know about your transmiter) http://www.hobbyking.com/hobbyking/store/__58201__FrSky_GPS_V2_Sensor_with_SMART_Port_1pc_.html
Receiver must be telemetry capable, not all of them are.
Having someone with you to guard your laptop while you fly, and using Oplink is also an easy option, but not that convenient.
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I looked some more but no luck, my Brothers gonna bring his dja phantom 3 so we can scope the pines from above. if that fails Im not gonna find it ever. last try today. I realise we probebly wont find it but there is still a miniscule chanse. I just have to bite into the onion and build a new one, I have all part I need on order but this time Im doing a 2 person full range test on the reciever mounted on the quad with a servo to the trottle channel. the new one is a zmr250 with cc3d dys mr2205 2700kv motors 30 amp littlebee escs search/voltage alarm and maybe some type of gps tracker. Im gonna try to secure the battery inside the quad.
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I once lost a Mobius camera in tall grass after a crash. I spent half an hour looking for it and thought I could forget about it, but a friend came by and cut down the grass in the whole area. We finally found it when we were almost going to leave. Point is : most of the time, you find it when you are almost sure it's definitively lost, so good luck :)
Fun fact : my camera was still recording during the whole thing, and at some point I can hear myself in the recording saying "where the f*ck is this damn camera?!" while having litteraly my foot on it above the grass.
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I am building now 150mm quad-rotor, seems cheaper than building bigger one. Also I didn't want to buy expensive components this time, so I can crash it as much as I want.
For example SunnySky 1306 3100kv cost $14.49 and SunnySky 2204 2300kv cost $15.59. Battery gets much cheaper Dualsky 3S 800mah 3S for $9.89 compared to same brand 1800mah 3s for $19.99. Props get cheaper as well.. etc. It's a little, but every few dolars here and there, makes it cheaper. Also smaller frame is cheaper.
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Yeah I know its strange it happens alot when you just give up but no luck with the phantom, atleast we tryed. I have carefully watched all fottage on my pc but I cant find it.
Yeah its cheaper but its harder to find if its small, Im gonna try to not lose this one. It is twice as expensive but Im gonna be more carefull where I fly and Im gonna have the lost drone alarm on it. also gonna try to find a small standalone tracking device for it but I dont know whats aveileble. mabey even a keyfinder would be better than nothing lol.
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Just a thought maybe there are cheaper recorders, but I found this
http://www.foxtechfpv.com/mini-d1-quality-sd-card-video-recorder-p-451.html
So if you are using some other fpv goggles that are cheaper than fat-sharks, and you have OSD with GPS coords, this or something cheaper might be an option.
You could also set alarm for low RSSI (packet loss) in your transmiter or also display it on OSD, so you know when you are about to lose signal before it happens.
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I will look into fpv stuff later I just dont have the Money right now for that stuff and If i had I would nott feel bad to pay extra for good googles becouse you wont ever lose them:) I found this real GPS tracking Watch, but I dont Think it would work in sweden becouse it seems all civilian market phone operators companys run 2100mhz. pitty really becouse its perfect, mabey it works anyway...
http://www.banggood.com/Anti-lost-E5-Smart-Watch-Somatosensory-Answer-GPS-WiFi-BS-Tracker-SOS-Security-Alarm-For-Kids-Baby-p-1028164.html
I will have this on on the next order I make, its not perfect but its better than nothing and could be of big help.
http://www.banggood.com/Wireless-Anti-theft-Anti-Lost-Security-Alarm-Receiver-Transmitter-Key-Finder-p-1013395.html
This is the order Im waiting for delivery right now
CC3D APM Flight Controller Anti-vibration Damping Plate Shock Absorber Set x1
CC3D CC3D Atom RC Antenna Pedestal Antenna Box For RC Multirotors x3
DYS ESC USB Linker Programmer for SN16A SN20A SN30A SN40A BL16A BL20A BL30A BL40A x1
Hobbywing 5V/6V 3A Switch-Mode Ultimate BEC (UBEC) x1
10 PCS Eachine Battey Tie Down Strap Velcro Strap 22.3cm x1
Diatone Universal Motor Protect Landing Gear For 1806-2204 (2PCS) Motors Color: Black x1
DYS MR2205 2700kv Brushless Motor For Multicopter FPV Racer Quadcopter x4
MAT-NLC Low Voltage Buzzer Alarm With LED Indicator Drone Searching Function x2
OpenPilot CC3D Flight Controller Staight Pin STM32 32-bit Flexiport x1
Diatone Universal Camera Lens Adjustable Holder For FPV RC Multirotors Color: Orange x1
2 Pairs Gemfan 6045 Bullnose 6X4.5 Glass Fiber Nylon Propeller CW/CCW For QAV250 ZMR250 Multirotor Color: Orange x3
2 Pairs Gemfan 6045 Bullnose 6X4.5 Glass Fiber Nylon Propeller CW/CCW For QAV250 ZMR250 Multirotor Color: Black x3
4X FVT LittleBee 30A ESC 2-6S BLHeli Supports OneShot125 For RC Multirotors x1
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DYS ESC USB Linker Programmer for SN16A SN20A SN30A SN40A BL16A BL20A BL30A BL40A x1
4X FVT LittleBee 30A ESC 2-6S BLHeli Supports OneShot125 For RC Multirotors x1
Littebee ESC are great, but I am not sure if you can program them with the DYS linker, it might be only for Atmel, but check when that arrives.
This one works with both SiLabs and Atmel http://www.multirc.com/universal-esc-usb-linker.aspx but I saw universal ones that costed $7 so even cheaper.
Oh forgot, you can use BLHeliSuite and cleanflight flashed on CC3D to program SiLabs ESC if you dont have the right linker, so you're safe with your order :)
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Yeah the dys usb linker might not work, added anotherone in my wishlist that does work if the dys one fails. I tested my range today on my hitec flash 5 with frsky DHT diy telemetry module and my Futaba 3pk with DFT plug in telemetry module both were tested in range test mode with the same v8fr-ii hv reciever. The dht tested glitch free to 25 meters while the DFT tested glitch free to 75 meters. ether the dht module or the hitec flash 5 is faulty. no wonder I lost my quad
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The dys linker should do all of them. I've never even seen one of those crazy square plug thing that you hold over the chip, or for sale. GetFPV has another small usb esc programmer that claims to do both. I have both but have only used the DYS one. On DYS sn20/bl20 escs. I think as long as your using blheli suite and your linker claims to do both Simonk and blheli flashing over the servo lead you'll be fine
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The dys linker should do all of them. I've never even seen one of those crazy square plug thing that you hold over the chip, or for sale. GetFPV has another small usb esc programmer that claims to do both. I have both but have only used the DYS one. On DYS sn20/bl20 escs. I think as long as your using blheli suite and your linker claims to do both Simonk and blheli flashing over the servo lead you'll be fine
Hey David,
DYS SN20 are using Atmel mcu http://www.readytoflyquads.com/bl20a-mini-esc-blheli-oneshot which can have either SimonK or BLHeli firmware. That works with Dys linker.
I used Afro ESC linker to program both BLHeli or (with SimonK bootloader and BLHelli bootloader) ESCs using servo wire, both were also Atmel.
However I had no luck programming ESCs Litebee 20A with SiLabs chip trying the same Afro USB Linker.
I also thought it's the same protocol.. but I was told it won't work and that I need linker specifically for ESC with SiLabs chips, to program them over servo.
If someone, can confirm it is possible with USB linker for Atmel chips to program specifically LiteeBee ESC with SiLabs chips, that would be interesting for me to know.
Thanks,
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I contacted hobbyking support regarding my dht module and send them a video on the range problem. they told me it was indeed clearly faulty and has now sent me a new DHT module and also a new v8fr-ii reciever for free. still at loss but atleast it feels alittle bit better now. Im waiting on a littlebee usb linker too, the dys linker wont work as you told me so I orderd the correct one.
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I contacted hobbyking support regarding my dht module and send them a video on the range problem. they told me it was indeed clearly faulty and has now sent me a new DHT module and also a new v8fr-ii reciever for free. still at loss but atleast it feels alittle bit better now. Im waiting on a littlebee usb linker too, the dys linker wont work as you told me so I orderd the correct one.
Nice of them that you get at least some of items back :)
Littebee usb linker will work, at least works for me. Afro (Atmel linker) I use for other older ESCs I have on other copters. Don't forget to order lost plane alarm.
I use this http://www.hobbyking.com/hobbyking/store/__36295__Signal_loss_Alarm_Lost_Plane_Finder_EU_Warehouse_.html
and this power board
http://www.banggood.com/Matek-LED-POWER-HUB-5in1-V3-Power-Supply-Board-BEC-5V-12v-Low-Voltage-Alarm-Tracker-p-1019353.html
but I found also another interesting option (havent tried this one)
http://www.hobbyking.com/hobbyking/store/__83329__Turnigy_3_In_1_Battery_Monitor_Signal_Loss_and_Lost_Airplane_Alarm_EU_Warehouse_.html
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I have ordered led and 3 in 1 alarm already, waiting on alot of orders right now. Im doing a 120amp setup with 65-130c batterys so I wont use a PDB, I will use a 2.5 Square mm Cable harness. also got a 5 volt bec and a 12v bec (for FPV) on order. Im afraid a PDB would fry under 120 amp load, It will probebly even heat up the Cable some.
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I have ordered led and 3 in 1 alarm already, waiting on alot of orders right now. Im doing a 120amp setup with 65-130c batterys so I wont use a PDB, I will use a 2.5 Square mm Cable harness. also got a 5 volt bec and a 12v bec (for FPV) on order. Im afraid a PDB would fry under 120 amp load, It will probebly even heat up the Cable some.
Great about 3in1. To me rebuilding or building is a part I enjoy as well.
I've never used 12V regulator, my cams like this one http://shop.runcam.com/runcam-pz0420m/ run on 5-17V so I would probably be fine even with 4S, but haven’t tried that, just 3S.
If your transmitter and camera can work with 12V, maybe you dont need weight of one more bec. But be sure before trying, not to fry it :)
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Yeah I enjoy building too its half the fun!
I got a camera with 12 volt max, tx can take 4s no problem but still could burn the cam with 4s without the bec. its not that heavy, I think its under 10 grams and Im gonna have atleast 1.5 kilos of thrust so it wont be a problem. Im using 2250mah batterys too so it wont be the lightest quad. bare frame is 150 grams...
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I did some weight calculations based on info on banggood and the total weight of the quad with all onboard gear lands on 460 grams minus battery and Cables, I Think it will be abit lighter than that but we will see about that :)