Posted by mlilasic | Sep 18, 2018 @ 05:32 PM | 865 Views
JHE42B 110DB Finder Buzzer Built-in Battery with LED Light for RC Drone F3 F4 F7 Flight Controller

Notice: Now BG also sells Vifly Finder v1.2 of this battery powered buzzer - lost drone finder- "New V1.2 Version, support 36 Hours beep"

This summer my friend and I were flying over the woods and he crashed. Lipo on his drone got disconnected in crash so he lost possibility to turn on buzzer on his drone . We were looking for his quad for 6 hours and couldn't find it. Loss to be greater, he had GoPros 4 on quad with lots of flight footage. It was lost too.
That evening , when I got home, I ordered immediately this little device. It can work as ordinary buzzer, but slightly louder, but more important it has its own builtin battery so it will sound even flight pack gets disconnected from the quad, plane etc...

I highly recommend this product.

Test jjj (2 min 33 sec)

JHE42B 110DB Finder Buzzer vs. ordinary piezo buzzer - Built-in Battery with LED Light for RC Drone (1 min 0 sec)
...Continue Reading
Posted by aero nishi | Sep 18, 2018 @ 05:13 PM | 878 Views
I tried to control Mini Convergence VTOL with Futaba transmitter.

Control E-flite Mini Convergence VTOL with Futaba TX (0 min 16 sec)

MCV supports only Spektrum serial reciever(SPM4648), so I needed to simulate Spektrum serial.
Spektrum serial is 125000bps, 8bits, No parity and 1 stop bit. SPM4648 sends 16byte packet every 22ms.
The first picture is the actual output of SPM4648. Each line is 16 byte packet every 22ms.

00 a2 0c 00 2e aa 14 0c 1b ff 01 5e 21 56 31 56

00 fade count
a2 system id (DSMS Spektrum2048 22ms)
0c 00 Channel ID=1 (Aileron) Servo Position=1024
2e aa Channel ID=5 (AUX 1) Servo Position=1706
14 0c Channel ID=2 (Elevator) Servo Position=1036
1b ff Channel ID =3 (Rudder) Servo Position=1023
01 5e Channel ID=0 (Throttle) Servo Position=350
21 56 Channel ID=4 (Gear) Servo Position=342
31 56 Channel ID=6 (AUX 2) Servo Position=342

If we simulate these packets from SBUS data, we can fly MCV with Futaba TX.

ThechannelIDofSpektrumisnumbered in the order of Throttle, Aileron, Elevator, Rudder, Gear,... ,but Futaba's ID is in the order of Aileron, Elevator, Throttle, Rudder, Gear,... We also need to convert them.

At first I thought about converting SBUS to Spektrum with Arduino or Mbed, but since I found "SBUS to PPM or Spektrum Serial Converter" on the internet, I decided
to use it.
I modified the firmware of the converter slightly to match the output of SPM4648.

The voltage of MCV's receiver connector is 3.3 V, so I took 5V from unused servo connector
of the MCV to power the converter and the SBUS receiver. The signal from the converter is
level-shifted and input to MCV. The third picture shows the connection of the converter, SBUS receiver, and MCV.
Posted by biglombo | Sep 18, 2018 @ 04:07 PM | 814 Views
Winter is coming | fpv freestyle | tbs source one - betaflight 3.5 (2 min 12 sec)

Winter is as much as you can before is too late...

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Posted by yours truly | Sep 18, 2018 @ 03:56 PM | 779 Views
So I recently got back into RC helicopters after a lengthy break and selling all my old stuff. I've already got 2 blade nanos and a blade 130s with a dx6e tx. It's good to be back and I'm thoroughly enjoying it
Posted by scousethief | Sep 18, 2018 @ 03:54 PM | 792 Views

Eachine ROTG01 Pro UVC receiver is upgraded with audio,and two buttons which make you search the frequency up or down,also included 2 different cables for Type-C and Micro USB, and receiver sensitivity is more stable than the old version. It is a new receiver that you can connect to your smart phone directly instead of heavy monitor and good for those who feel dizzy when wear FPV goggles. It has low latency around 100ms. 150CH auto search allows to cover all 5.8G frequency bands. One-screen display and double-screen display are switchable.

Parameter :
Brand Eachine
Model ROTG01 Pro
Name UVC OTG FPV Receiver
Channel 150CH
Frequency Range 5645~5945
Sensitivity -90dBm
Working Current 200mA/5V
Power Supply 5V(by smart phone)
Operating Temperature -10~60℃
Connector RP-SMA Female
Weight About 28g
Size 61*33*0.9 mm
Color Black/White
Resolution 640*480
Please note:This Reciever only suits for Android phone that support UVC and make sure your phone can work with OTG connector.

How to check my phone support UVC:

APP Download:

Here's the phone list...Continue Reading
Posted by schumixmd | Sep 18, 2018 @ 02:48 PM | 789 Views
The T8SG Lite arrived from Banggood.
I will use it few days and afterwards will update the review. Until then few photos.
Posted by thijs slotman | Sep 18, 2018 @ 02:36 PM | 794 Views
yet another flight with the floss 210
FPV flight floss 210! and inverted yaw spins training. (4 min 5 sec)

Posted by rclad | Sep 18, 2018 @ 01:48 PM | 826 Views
See the latest entry in my IMAC log here.
Posted by HOMI_EPP | Sep 18, 2018 @ 04:41 AM | 968 Views
EPP battery charge hand launch glider plane
You can Launch it to fly without battery charge,also you can choose to charge it first in a short seconds

Flying weight:21G
Motor:KPD 7*16MM
Charge time:no more than 30s,better to charge 10-15s
(charging indication light and charge protection set)
Flight height:10-15M
Flying distance:100-150M
Flying time:45-60s.
Pack:30sets/carton(retailer box including holder)Weight:9.5KG/cartons

1,Connect the battery box plug with charging socket on the fuselage.
2,Turn on the battery box and keep the fusalage switched OFF.
3,After charging 10-15s,turn the battery box OFF and remove the charging plug.

charging time better within 10-15s,no more than 30s or the capacitor will be damaged.
Posted by HOMI_EPP | Sep 18, 2018 @ 04:23 AM | 958 Views
good flying experience !just need to throw it out!
Posted by HOMI_EPP | Sep 18, 2018 @ 04:16 AM | 884 Views
This is a patent product for EPP apply to soccer ball,EPP is non-toxic and can be bio-degradable,light weight but very endurable,and inflatable free,easy to wash and assemble,good toy for kids.
Posted by japim | Sep 18, 2018 @ 02:54 AM | 1,113 Views
I just love this plane. It flies so well and I have lots of fun + it looks just awesome in the air. Maybe one day I will build a bigger version.

Follow me - flying behind P61 Black Widow (4 min 51 sec)

Posted by alex111 | Sep 18, 2018 @ 01:14 AM | 1,130 Views
My HMY Britannia all hand made
Posted by GroundControlRC | Sep 17, 2018 @ 09:18 PM | 1,208 Views
Custom 250 Quad - Dustoff #1 - I wrecked it but good ;-(

Ground Control RC Custom 250 Quad - Dustoff #1 - I wrecked it but good ;-( (5 min 14 sec)

Well, I haven't flown my custom 250 quad in months.
Time for a DustOff flight ;-)
I just flashed my Flight Controller with BetaFlight.
The Flight Controller is an old CC3D unit.
This flight is to check it out and see how out of tune it is.
Sadly, I ran out of talent on a very bad default setup.
I had a lot of drift and vibration when flying through the prop wash.
I should have waited to get the tune accomplished before performing much acro not mention the fact that I am way out of practice.
I haven't evaluated all the damage yet to see what can be salvaged.
I guess I'm lucky I already have upgrade motors on order for this quad, I'm certainly going to need them ;-)

Build, Fly, Crash, Repair, Rinse & Repeat!

Happy Flying!
Posted by old4570 | Sep 17, 2018 @ 09:08 PM | 1,144 Views

Yeah ! , some one has the dollar bug !

Seriously , a long time ago you could buy something for a dollar . ( I mean a long time ago - like the 1970's )
Those times are long gone , well so I thought .

Apparently , you can still get stuff sent to you ( mind you ) for a lousy dollar ...

And so what we have here is a little chucky ..

Building one is incredibly simple , you just need a match stick or something to punch out the cut outs for the wings N things .
There is no need for glue ..
This particular chucky is a stunt chucky ..
And by that I mean it is supposedly meant to do loops when you hurl it ..
If you look at the pictures you will notice I cut a new slot for the elevator so the chucky would glide straight ..
And glide straight it does ..

Only real issue is the weight , or lack there off !
These are really meant for indoor flight as the slightest breeze has a huge effect on the chucky ..
A school hall or something would be brilliant .
If you plan on relocating the elevator , a very sharp cutting tool will make short work of cutting a new slot ..

Flight trimming was easy , just tweak the foam wings or elevator to suit . ( They are very easy to mold with your fingers )
I was really amazed at how well such a small light chucky can glide without a breeze upsetting it .

What I like ..
1) Cheap @ $1
2) Easy to build ( Kid safe )
3) easy to tune
4) relatively robust

What I don't like
1) Stunt version (?) Will need a sharp cutting implement to correct
2) Indoors only - gets upset by the slightest breeze

Feebay Link
Posted by tc flyer | Sep 17, 2018 @ 05:58 PM | 1,050 Views
Tundra Float wheel mod (2 min 37 sec)

Posted by pressalltheknobs | Sep 17, 2018 @ 05:45 PM | 836 Views
In OpenTX a channel is a pipeline of calculations starting with the Source you use to control the channel and ending with the output of the final channel value at the receiver. You set up each channel by adjusting the various parts of the pipeline so that they change the value provided by the Source into the value you want to emit from the receiver.

Source->[INPUT->][Trim->]MIXER->OUTPUT->[OverrideCH->][PPM Center->]Module->Protocol->...Radio-Transmission...->Receiver->[pwm|cppm|sbus...]

The channel pipeline is run periodically, sampling the current value of the Source, transforming it and sending the transformed value to the receiver which emits the value is some form. The receiver gets a new value each time the pipeline is run and so receives a stream of incrementally changing values for the particular channel. Since there is more than one channel, the channel pipelines are processed together and the channel values from each period are typically bundled together sent to the receiver in single data packet. The form this takes depends on the protocol being used. The receiver pulls each channel value out of the data packet it receives emitting it to the appropriate place (eg the PWM pin for that channel or the channel slot in the SBUS data packet)

The latter part of the pipeline...
is set up by choosing a Module, a Protocol and appropriate...Continue Reading
Posted by pressalltheknobs | Sep 17, 2018 @ 05:43 PM | 817 Views
The standard continuous controls (sticks, pots, sliders) give values between -100% and +100% and switches give one of -100%, 0% or +100% depending on the type of switch. Other sources like Telemetry values may have different ranges.

INPUTS are for adjusting the value a control or other source gives. Each INPUT groups a set of "lines". Only one line from an INPUT is used at once. A line defaults to active but may be made conditional on a real or logical switch position using the Switch field. If the Switch field condition is true then the line is active. For each INPUT, the set of lines is checked in order from top to bottom and the first active line found is used to calculate the value for that INPUT. If there are no active lines then the INPUT will "Hold" it last known value. The basic INPUT line calculation is given by this formula...

INPUTn = Weight*Function(Source) + Offset

While the numbers are presented as %'s to make them easier, for the purposes of the calculation it is better to consider the numbers as being a decimal fraction between -1 and +1. Weight can be in the range -100% to +100% and scales the Source value. A 70% weight means multiply the Source value by 0.7. This also has the effect of setting the minimum value to -70% and the maximum top +70%. This is often refereed to as the "rate". Offset adds a constant to the value. A 10% offset means add 0.10. This will change the minimum from...Continue Reading