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Member postings for Mike Blandford

Here is a list of all the postings Mike Blandford has made in our forums. Click on a thread name to jump to the thread.

Thread: What Traders are still offering Mail Order? Services?
08/04/2020 20:52:41

Not sure if they have been mentioned but I had a delivery from DB Sport and Scale yesterday. As with all deliveries it is now in quarantine for 72 hours before I touch it, a glove was worn to get it to the quarantine area, and the glove is also in the quarantine area.

Mike

Thread: Liability of Open Source radios
08/04/2020 20:48:00

Well, the FrSky XJT module uses 3.3V to power the SE2431L power amplifier chip, so you could only try to increase the output power by increasing the supply voltage to (the absolute maximum voltage for the device of) 3.6V.

Then you could see an output power increase from 22.5 to 24 dBm, but only if you also increase the input signal by 3dBm (from 0dBm to 3dBm). Since the input signal is that provided by the CC2500 chip, and that can only output a maximum of +1dBm, you can't do that! In any case, the output power from the CC2500 is controlled by the (non-open source) firmware in the module.

I can't actually see that suggestion achieving anything significant, while risking exceeding the max. supply voltage of 3.6V and destroying the SE2431L

At best, I reckon you might get a 0.5dBm gain in output power, so increasing the output from 100mW to 112mW, which might get you an extra 6% of range!

Mike

08/04/2020 16:08:38
Posted by Andy Stephenson on 08/04/2020 10:46:40:

Andy48

The document I referred to above appears as a email circulated by Duncan McClure South Midalnds Area Delegate to the BMFA and recommends that a local club adopts an embargo of open source radios as he maintains it IS possible to change the power settings using this system.

I have now seen this email but it is an internal club communication so I won't put it online without permission.

You may want to contact Duncan directly on this subject.

Andy.

I have over 20 transmitters, all running open source firmware. Apart from the 4-in-1 module, they all use a 2.4 GHz RF module that is closed source firmware provided by the original manufacturer and the open source firmware has NO access to the RF chip programming.

Mike

06/04/2020 22:17:42

The multi-protocol module firmware is open source (started as a hardware and software DIY project), and this controls the RF chip(s) directly. They all have an output power setting controlled by the firmware.

Mike

06/04/2020 15:26:04

The open source software is released under the GNU General Public License.

V2: **LINK**

V3: **LINK**

Extract from the V2 version, the V3 version is similar:

NO WARRANTY

11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Mike

Thread: What Traders are still offering Mail Order? Services?
02/04/2020 10:56:52

I ordered from T9HobbySport yesterday, the Royal Mail tracking says it will be delivered today.

When it arrives, it will be picked up while wearing gloves and placed in a quarantine area in the spare room, along with the gloves, and not touched for 72 hours. Maybe that is being paranoid, but why take chances?

The 72 hours applies to everything we get, including food shopping, we have a quarantine shelf in both the fridge and the freezer, and several pairs of gloves each.

Mike

Thread: templates?
01/04/2020 12:07:51

Unfortunately no, partly because the format of the .otx files changes at times with major releases of openTx, so it would be a lot of work to be able to handle all the different versions.

Mike

31/03/2020 23:31:33

Yes, plenty of help around, and hours of videos, but some people are not so interested in spending hours watching/learning, so an easier user interface may be more appropriate. So when you want to edit a model, you start from this:

sd1.jpg

Mike

31/03/2020 21:16:48

Possibly because erskyTx is easier to use! He want's "throttle cut", erskyTx provides a safety switch menu where you just select a "sticky throttle cut" function.

I've often been asked about openTx "I know it will do X, but where do you find the setting". Navigating the openTx menus, on the radio, is quite awkward at times, erskyTx provides an easy to navigate menu index page.

erskyTx also provides easy to configure "Voice Alerts". All the things you need to make an alert are in one place, instead of needing to set up logical switches, and special functions separately.

There are quite a few users who definitely prefer erskyTx!

Mike

30/03/2020 15:46:15

You don't need to open the .bin file.

Start the radio in bootloader mode (both horizontal trims held to the centre at power on), then connect up the USB.

Then just run eepskye (not eepe), click on the "Flash Firmware to Tx" icon (or select the "Burn" menu and choose "Flash Firmware to Tx", select the downloaded file and confirm the flash operation.

In case you want to revert at some time, it is a good idea to read the EEPROM from the radio first, and save it as erskyTx will re-format the EEPROM.

Mike

Thread: D8R-11 plus Receiver and EU LBT firmware
30/03/2020 13:03:15

I've posted (on RCG) an update to this firmware (version 270320).

This supports the new FrSky V2.1.0 ACCST protocol. It also automatically scans for the protocol to use when binding so detects V1 and V2 in both FCC and LBT modes.

Mike

Thread: templates?
29/03/2020 12:29:12

Allen, you may not be aware but erskyTx has similar capabilities to openTx, not surprising since openTx was forked from er9x. If Eric has been using er9x, then transferring to erskyTx will be easy.

With erskyTx, I have tried to make navigation on the radio much easier, have a look at my album that shows a couple of screen images.

I've also made an effort to make updates easy. I've kept the storage unchanged though many upgrades, even though it makes writing the firmware a bit more difficult.

FrSky offer the XLite with the option of erskyTx or openTx, and many people do find using erskyTx easier.

Eric: If you were using er9x, then you should be able to transfer models. Open eepe and read the EEPROM from the 9X. Now run eepskye at the same time and read the EEPROM from the Taranis. Then just drag and drop models from eepe to eepskye. Then just write the Taranis EEPROM. You will need to check switch assignments as the number and type of switches are different on the two radios.

Mike

Edited By Mike Blandford on 29/03/2020 12:32:28

Thread: Gardening help needed
28/03/2020 17:18:25

My wife looked the bush up and reckons it is a Viburnum. There are several different types that flower at different times and have slightly different foliage.

Mike

Thread: templates?
28/03/2020 14:28:12

When you say firmware like the "old turnigy", are you referring to the 9X transmitter and er9x?

If so, then you just need erskyTx. Go to **LINK**, and click on "erskyTx for Taranis".

You may like to download and install eepskye as well, the program that runs on your PC.

Mike

Thread: FrSky Major Update for most TX and RX
26/03/2020 15:51:18

Andy, is that a typo where you say V2.0.1? V2.1.0 is available on the FrSky site.

Mike

25/03/2020 22:42:24
Posted by Tim Ballinger on 25/03/2020 12:10:05:

Mike,

I see this from the github testing

Sounds like there are still problems despite the full release. Any advice?

Not a lot! I've been testing with and X9D and a X9D+ with a X8R. Those all seem to be working fine.

I don't have any XM/XMP receivers so I can't test those.

I do have a G-RX8 and a G-RX6 but those are on ACCESS for testing that at present.

I'll see if I can test a S8R tomorrow.

Mike

24/03/2020 12:38:49

The SPort power is switched, in the same way the module power is switched under software control. It is only turned on when you are actually flashing a device, and then only at the correct time in the operation so the device is always found.

What you are seeing is a leakage voltage, and you meter is discharging this to ground.

Mike

Thread: D8R-11 plus Receiver and EU LBT firmware
22/03/2020 23:26:24

You can go direct to 050220. Both these later version include the bootloader, so after flashing one of these, you will no longer need to open up the Rx and short the "BOOT0" pads to be able to flash new versions.

The 050220 version includes code that avoids the 0.9 sec lockout, it just drops a single RF frame of data.
It does not support the V2 firmware protocol (yet) as that is not quite finalised.

There is no need to update openTx or the XJT firmware.

Mike

Thread: FrSky Major Update for most TX and RX
21/03/2020 10:16:54

FrSky have a V2.1 version of the update available for testing, they have not yet released it, but if you have the time and inclination to test it, it is available to download from a Github page.

Mike

Thread: D8R-11 plus Receiver and EU LBT firmware
14/03/2020 23:29:43

That combination is working for me with a D8R-II, and I just checked with a D8R-II plus and that responded as well.
I'm powering my receiver from a 4-cell NiCd, and the FDD_Lite_rev2 has the Rx signal connected to the Tx on the receiver and the Tx signal to the Rx on the receiver with Gnd also connected to G on the receiver.

The Tx signal, from the receiver, has a pullup resistor to 3.3V. It is possible that the FDD_LITE is loading this signal so it doesn't switch high quickly enough. However, the STM bootloader does detect the baud rate you are using automatically, so you could try a lower rate than 115200. I just checked my D8R-II plus, and this did respond at 57600 baud as well as 115200. You could also try lower baudrates. If you change the baudrate on the first screen of the flash loader program, I recommend you power cycle the receiver before clicking the "next" button.

Once you have the firmware flashed (assuming you have downloaded a recent version that includes its own bootloader), you may reflash the receiver without needing to short the two pads, just link channels 2 and 3 on the receiver at power on. I've done this many times now using the FDD_LITE at 57600 baud.

Mike

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