Search found 126 matches

by midelic
Tue Mar 17, 2020 10:55 am
Forum: 3D Printing
Topic: Installing TH3D Tough Direct Drive Heatsink Extruder with V6 All-Metal Hotend (Upgrading CR10s 3D Printer)
Replies: 8
Views: 4020

Re: Installing TH3D Tough Direct Drive Extruder with Heatsink and V6 Hotend (Upgraded CR10s 3D Printer)

My next project will be this one.
https://www.instructables.com/id/RCServ ... ect-Drive/
I already bought the parts.I will use a 4.5Kg-cm(torque) servo-26 grams .A pancake stepper motor 2.5 kg-cm is over 200grams
by midelic
Mon Feb 03, 2020 12:29 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

If was about diy protocol not the original.The original you cannot flash it on a clone. JUMPER_R8 is 95% pin out compatible with X8 ,which is an imperfect clone. yes I can flash my firmware to an X8R. Give me one and I will prove it to you.Mike flashed it own firmware to D8R and D4r. If you do you c...
by midelic
Sun Feb 02, 2020 1:05 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

by midelic
Sun Feb 02, 2020 12:07 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

I start thinking that Frsky might shot themselves on the foot big time with new version. Let's say we take old D16/LBT that frsky just "abandoned"(honestly I like it a lot for different reasons than what was presented).And we modify like you said HW crc and data whitening,what comes out is another D...
by midelic
Tue Jan 28, 2020 2:27 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Frsky would not like that mainly because any new protocol will end up in Jumper T16.If MPM was " alone" they would not bother much. If we give support for DIY rx new protocol, Frsky is loosing a lot while Jumper is gaining a lot,for free. There were reports that DIY RX perform better that Frsky orig...
by midelic
Tue Jan 28, 2020 1:05 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

You are taking about a new protocol or frskyV2?If you add on MPM and a DIY RX data whitening + HW CRC it is like new protocol but I think will not be compatible with Frsky V1 or V2.I need to test that.That can be done very easy.Frksy will not like that for sure. The problem is that I have no interes...
by midelic
Tue Jan 28, 2020 8:49 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

No hurry, just would be interested, whether you continue your project, since the last update was one year ago. One year ago!? My new RX projects are here. https://www.rcgroups.com/forums/showthread.php?3420847-DIY-FrSky-X%28D16%29-receiver https://www.rcgroups.com/forums/showthread.php?3504875-Jump...
by midelic
Mon Jan 27, 2020 10:58 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

For security reasons yes it is weak. Yes the communication over the air is not secure.That was not the intention.There is no point to encrypt data in order to avoid a potential enemy or a person with nefarious intentions to find out what we send over the air.This is RC world.You can send valid data ...
by midelic
Mon Jan 27, 2020 6:53 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Crc is not ingenious by itself , is the fact that is calculated in TX sent to rx and checked in rx after the packet is received.That is ingenious for me I'm a simple guy. Your calculation does't say how the bit may change and what is the probability to change and what is the probability that the mod...
by midelic
Sun Jan 26, 2020 7:22 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Mike. I remind you that the CRC on frsky is not calculated in Rx is calculated in TX and sent as data in the packet frame.The crc is reconstructed in RX from packet bytes received and checked against the crc bytes again received in the same packet.If they are coming erroneous the frame is discarded....
by midelic
Sun Jan 26, 2020 7:02 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

I believe the problem is with the new line of TX and RX probably used different hardware and different software.
I would like to hear if somebody recorded the same problem with an TX with XJT module and an old X4R or X8R rx.
by midelic
Sun Jan 26, 2020 5:28 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Let me tell you something that may appear shocking to you.I believe that crc system used by Frsksy cannot fail in these conditions.Yes the HW CRC used by ccc2500 can fail but not the one used by frsky. It is an ingenious system to ensure that correct data is received and in my opinion far superior t...
by midelic
Sun Jan 26, 2020 12:07 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

I was discussing the problem with lockouts with original TX/RX.And I suggested a test with an original TX and a diy rx to see of those lookouts occurred again.And to prove that new crc and a consequence as a complete alteration of the original code( basically new firmware) is not necessary. And you ...
by midelic
Sun Jan 26, 2020 8:24 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

The other factor is that these rx are using different firmwares.As TX maybe have one firmware ,different RX using different firmware for different purposes. Idk about these rx firmware but the servo glitches can have other explanations( how the timing for servo is generated,the interrupts interrupts...
by midelic
Sun Jan 26, 2020 8:15 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

I think this heated debate of FrSky versus Jumper/clones is because people are invested too much emotionally with a product. They care. When a person close to you do something that upsets you ,you feel betrayed.That is because you put that person(or a product) on a pedestal and when the image you ha...
by midelic
Sun Jan 26, 2020 7:05 am
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Hopping sequence is determined at the session start with the 6-th byte(packet no5) in the packet.That byte is sent on every frame.If that byte become corrupted(wrongly calculated by tx or rx,or other reasons that I fail to see now ) ,the rx will jump on different channel with the wrong sequence and ...
by midelic
Sat Jan 25, 2020 8:58 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

I think Mike has a good idea why the lockout happened.
by midelic
Sat Jan 25, 2020 8:38 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

It is possible some interference but I don't think the lockout here was from the tx frequency offset. Let me explain.The lockout here means that 100 frames were lost(0.9 sec),In the hopping frequency system that means the rx was passing over all channels 2 times(jumping on the next channel every 9 m...
by midelic
Sat Jan 25, 2020 8:11 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Yes exactly that, I said the same 5 years ago.
by midelic
Sat Jan 25, 2020 7:48 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Carbo, My DIY RX is tuned closer to the base frequency that tx put out(theoretically in +/- 210 khz deviation).If the tx base frequency is lower or higher with 40Khz the DIY rx is tuned automatically to that.As long as the offset is constant the RX don't care. As a side note Mike added in his code o...
by midelic
Sat Jan 25, 2020 7:31 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

I don't see how bad data can creep through by itself.There is one more level(aside CRC) to root out bad data or incomplete.One is reading the number of bytes in RXFIFO register.That is red twice(as per CC2500 errata notes) to root out reading errors.After the data is red there are 3 other checks for...
by midelic
Sat Jan 25, 2020 7:13 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

CC2500 X-tal frequency drift with temperature may happen(and happened with poor quality X-tals) and if happened it will worsen and the rx will not recover.The lockout is limited in time and rx recovered .I don't think the lockout is caused by a frequency drift.
by midelic
Sat Jan 25, 2020 6:25 pm
Forum: erskyTx (was ersky9x)
Topic: Frsky updates
Replies: 198
Views: 22510

Re: Frsky updates

Here is another log from Juergen with a documented lockout with ACCST pre2.0. Eventually combined with an unintended roll command, if you look at the pilot's reaction with aileron (blue), but it may also be a coincidence. It took 8 months to find a pilot with an affected TX and the ability to build...
by midelic
Sat Jan 04, 2020 4:41 pm
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: New beta version of openXsensor (=openXvario)
Replies: 523
Views: 96907

Re: New beta version of openXsensor (=openXvario)

Yes if you manually modify the config files it compiles ok.
The auto-generated config files from configuration are causing problem
by midelic
Sat Jan 04, 2020 11:51 am
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: New beta version of openXsensor (=openXvario)
Replies: 523
Views: 96907

Re: New beta version of openXsensor (=openXvario)

Yes the configurator output files should not define something that is not selected. that is one problem. But I think those 2 lines are confusing #if defined(AN_ADS1115_IS_CONNECTED) && (AN_ADS1115_IS_CONNECTED == YES) #if defined(ARDUINO_MEASURES_A_CURRENT) && (ARDUINO_MEASURES_A_CURRENT == YES) In ...
by midelic
Sat Jan 04, 2020 1:56 am
Forum: OpenXVario - an open source vario supported by the open source firmwares!!
Topic: New beta version of openXsensor (=openXvario)
Replies: 523
Views: 96907

Re: New beta version of openXsensor (=openXvario)

Hi , I tried the compile the new oxs code with config file generated by the new configurator, and I get an error. ********************************************************************** openXsensor:92: error: #error When AN_ADS1115_IS_CONNECTED is set on YES, ADS_MEASURE (in oXs_config_advanced.h) mu...
by midelic
Tue Nov 19, 2019 6:58 am
Forum: erskyTx (was ersky9x)
Topic: Script Language
Replies: 328
Views: 57943

Re: Script Language

Joao, You know when the train was invented many said that the speed of train will make people collapse and die.Better use horses,trains are dangerous(and they are). Progress always bring fears in people.And also people always will try to improve things.One invention or innovation will lead to anothe...
by midelic
Mon Nov 18, 2019 8:16 pm
Forum: erskyTx (was ersky9x)
Topic: Script Language
Replies: 328
Views: 57943

Re: Script Language

Joao, It is not like that to change manually or do manually routine tasks. It is about an automatic change in base of a condition that is met in the script. A condition that is triggered by a change in Rx modes or other Rx configuration. Regarding risk there are many hoops and checks until that cond...
by midelic
Mon Nov 18, 2019 7:21 am
Forum: erskyTx (was ersky9x)
Topic: Script Language
Replies: 328
Views: 57943

Re: Script Language

if proto = D16
setmodel("DogFight_X")
end

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