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Mike Blandford

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Everything posted by Mike Blandford

  1. Mike Blandford
    I'd also suggest looking at the FrSky Q X7 (16 channel Tx). It's around £105 for the Tx and around £25 for a X6R receiver that provides 6 channels directly, and up to 16, in total, on the SBUS output. It also provides telemetry (signal strength and Rx battery voltage), with other telemetry sensors available. Also available are 6 and 8 channel stabilising receivers for very little extra cost (£1 extra!), and these also support SBUS for 16 channels. The Q X7 comes with the open source firmware, openTx, installed, although it is also possible to re-flash with the open source firmware ersky9x. Mike.
  2. Mike Blandford
    Are you certain you are running eepskye, and not eepe. AvrDude is only used by eepe. Go to the eepe install directory and run eepskye.exe. Mike.
  3. Mike Blandford
    The processor on the 9Xtreme is basically the same as that on a Taranis. Flashing is performed in the same way. You power the radio on while holding the two horizontal trims towards the centre. This starts the radio in bootloader mode. Now connect the USB to the computer, and two hard drives should appear. Now run eepskye. Go to the BURN|Configure menu and make sure "Use SAM-BA" is NOT ticked. You should now be able to use eepskye read/flash both the EEPROM and the flash memory from eepskye. Plenty of reading also here: **LINK**. Mike.
  4. Mike Blandford
    You may be confusing the SP board, or I'm confused. There is the basic SP board, which is a solderless programmer for the standard 9X processor. There is also the 9Xtreme board, which has a better processor on it. I have assumed you have the first board (quite a small board). Please confirm which SP board you have. If you have the 9Xtreme, then you need to be running eepskye, not eepe (both are installed in the same directory). Mike.
  5. Mike Blandford
    What did you read from the 9X, the EEPROM or the flash memory? Did you download eepe (and er9x) from here: **LINK**? What processor do you have on your 9X, a MEGA64 or a MEGA128? For when you get er9x flashed to the 9X, there is a manual for it here: **LINK**. Since you have eepe, I'm assuming you want er9x, if you want openTx, then you need companion, not eepe. Mike.
  6. Mike Blandford

    Mike Blandford posted a gallery image in Member Albums

  7. Mike Blandford

    Mike Blandford posted a gallery image in Member Albums

  8. Mike Blandford
    You can see manuals online ( and some pdf downloads) here: **LINK**. Not knowing what the Tx can do is, in my opinion, not helped in openTx with the way in which features are configured. This is why I use ersky9x on the Taranis. I provide a menu of features like this: so you can see most of what is possible. Where an entry covers several items, you get a "popup" when you select it showing, and allowing selection of, the sub-features, like this: e.g. If you didn't know you could log telemetry, perhaps you don't know you can play "background" music. The ersky9x menu shows "Music" as an option. Mike.   Edited By Mike Blandford on 26/07/2017 12:05:56
  9. Mike Blandford
    Not set - as it says, and should show a warning. Hold - Sent by the Tx every 9 seconds, Rx outputs hold thei last position Custom - Sent by the Tx every 9 seconds, Rx outputs go to the values programmed in the Tx No pulses - Sent by the Tx every 9 seconds, Rx outputs are stopped Receiver- Tx doesn't send any failsafe settings, Rx outputs go to position as set using the Rx button (if set). Note that if you use a S8R or S6R (stabilising) receiver, you cannot use the receiver option as pressing the button causes the Rx to enter "Self check" mode. Mike.
  10. Mike Blandford
    If you created the EEPROM on companion , then flashed it to the radio, you will have overwritten the stick calibration. Try calibrating the sticks. Mike.
  11. Mike Blandford
    I note several references to using ohm's law regarding servos, as though they a simple resistances. As they have motors in them, they are inductive, as well as being motors. The inductance means as soon as a voltage is applied to the motor it immediately generates an opposing voltage, which then decays over time, allowing the current to increase. In adition, as soon as the motor starts to rotate, it acts as a dynamo and also generates a voltage that opposes the applied voltage. The mechanical power out from the motor is this "dynamo" voltage multiplied by the current flowing (less any mechanical losses). These mean that the actual servo response is very complicated. Mike.
  12. Mike Blandford
    I think you will find the FrSky thermistors are 100K. What you can try is to get some 100K ones, physically like the 10K ones you are using. Connect them to the FrSky sensor, then test the response in boiling water and freezing water, making sure the water doesn't come into contact with any wires on the thermistors. If you get readings of 100 deg and 0 deg, then you can use them OK. Freezing water is water with Ice cubes in it, but making sure the thermistor isn't touching the ice itself as that will be below 0 deg. I think it doubtful a PICAXE can drive the Smart Port directly. The arduino in the openXsensor has to use "bit-bashing" at 57600 baud on a bi-directional signal for the Smart Port (I wrote that part of the code!). Mike.
  13. Mike Blandford
    Posted by Trevor Crook on 20/06/2017 12:34:55: I thought that FrSky had receiver matching, but will it perform a matching check if you are using a DSM2/X module and a corresponding rx? I suspect it can't, . . . Depends on the DSM module you use. If you use a "hack" module, or a Multi-protocol module (or an Orange module re-flashed to the Multi protocol), then the Model matching on DSM is supported by both ersky9x firmware and openTx firmware on FrSky transmitters. If you use a module that uses a PPM signal, then it won't support model matching. Note that you may use FrSky transmitters with ersky9x firmware which offers, in my opinion, an easier to follow user interface. Mike.
  14. Mike Blandford
    Manuals for the 9XR-PRO are here: **LINK** Latest releases of ersky9x and eepskye are here: **LINK** I suggest you install eepskye on your PC, then start the radio i "bootloader mode", and you will be able to backup your existing firmware and EEPROM so you can revert if you feel you need to. Mike.
  15. Mike Blandford
    Well try my suggestion. I tested it before I posted it, although I do have the latest firmware running (test version of r221!). If that doesn't work, come back and I'll offer some more suggestions (I may need to load r204 to test them!). Do you have eepskye loaded on you computer so you can easily read/wirte the EEPROM and update the firmware? Mike (Developer of ersky9x firmware).   Edited By Mike Blandford on 07/06/2017 18:41:01
  16. Mike Blandford
    I have a Blackhorse Mosquito, which was difficult to steer on the ground (grass). I've set up differential throttle control by mixing rudder control with the two throttle outputs. With that, it will now turn while keeping one wheel stationary. I have this as an option enabled by a switch. Mike.
  17. Mike Blandford
    Set up a logical switch: SW3: v>val THR -98 then set Trigger to ON and TriggerB to SW3m The timer will start when you advance the throttle, but will continue running when you bring the throttle off. Advancing the throttle again will then stop the timer (SW3m toggles the timer state whenever it becomes ON). Revision 204 firmware (which I think the Tx came with) is around 3 years old. You might consider updating to the latest (220). See here: **LINK** for a summary of the changes. Mike.
  18. Mike Blandford
    As I said above, the facility to send/receive data "over the air" using SPort telemetry packets was only added in 2.2. So, while LUA is available in 2.1.9, the S6R LUA script will only work with 2.2 (or later!). Mike.
  19. Mike Blandford
    LUA scripts are available in openTx before 2.2, but certain specific support, like sending/receiving SPort telemetry data, was not introduced until 2.2. In passing, I've just added LUA support to ersky9x firmware. Mike.
  20. Mike Blandford
    To avoid CH12 accidently triggering the self check, the current requirement is CH12 changes 3 times away from and back to the centre position within 3 seconds. OpenTx V2.2 has now been released. Ersky9x firmware also supports configuring the S6R from the transmitter. Mike.
  21. Mike Blandford
    Make absolutely sure you have channel 9 (master gain) set correctly. If channel 9 is sending the centre position, then the gain is ZERO and stabilisation doesn't do anything. Mike.
  22. Mike Blandford
    I mentioned this before, but the range you get (in range check or normal mode) depends on the height of both the Tx and the Rx above the ground. If you do a range check with the model on the ground (say Rx antenna 6" off the ground) you will get a certain distance. Put the model on, say, a flight box with the Rx antenna now 12" off the ground, you will likely get 40% more range. The same applies to the Tx height. Mike.
  23. Mike Blandford
    But Hobbyking are simply selling this, they don't manufacture it. I got one in July 2016 from bangood, who also are just selling it, not making it. So, in your opinion, is a: Futaba 14SG 14-Channel 2.4GHz Computer Radio System 2.4GHz FASSTest (Set) (Mode 2) costing several hundred pounds "Cheap and nasty" because Hobbyking are selling it? Please read the thread on RCG (with over 9000 posts) to which I linked on the second post of this thread to understand what this module is all about, and how well, or otherwise, it performs. Mike.
  24. Mike Blandford
    I use a 3-position switch to select normal, stab or auto-level modes. My settings for channels 10 and 11 are: CH10: +100% MAX !SC^ CH11: +100% MAX SCv With the switch up, I have normal mode, in the centre I have stab mode and down is auto-level mode. Being able to adjust the settings direct from the Tx, at the field, is very useful. I needed to reduce the rudder gain in stab mode last time I was flying, very easy to do (I'm using ersky9x on the Tx and this includes the facility). There should be no problems using channels 10 and 11 in this way, the outputs to the Rx should be perfectly stable. Mike.   Edited By Mike Blandford on 24/05/2017 23:41:09
  25. Mike Blandford
    Frank: I mentioned "serial mode". This mode uses a serial protocol between the Tx firmware and the module, NOT PPM. Ersky9x reads the sticks/switches and calculates the servo positions over 250 times per second, typically 500 times per second, so every 2 to 4 mS. OpenTx does this a couple of milliseconds before sending the data to the module. In both cases the servo positions are sent to the module every 7mS, in digial form. No significant conversion is needed to change these to the values needed by the RF protocol in use. The RF protocol operates at whatever rate is "standard" for the protocol in use, e.g. FrSky is 9mS, DSM2 is 22mS, DSMX is 22 or 11mS and so on. So, the latency, in this mode, is quite short. This module supports at least 29 basic protocols, may of which have several sub-protocols. It has 2 modes of operation, serial mode (as I describe above) where the selector switch is set to the '0' position, and PPM mode where you may select one of 15 possible protocol/sub-protocol options. Unless your Tx doesn't support serial mode, then you should normally use serial mode to get both the best performance and the option of selecting all the protocols that fit in the flash space. Guvnor: What do you base your opinion on? Mike.
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