Tim Kearsley Posted August 16, 2023 Share Posted August 16, 2023 Has anyone purchased one of the new Neuron II ESCs and tried to configure parameters via the LUA script on an OpenTx radio? I'm trying to set up a Neuron II 60A ESC on a Horus X10S Express and the LUA script (FrSky ESC.lua), downloaded from the FrSky website, doesn't populate any of the parameters. Telemetry from the ESC is working fine and I can see values for ESC current, ESC voltage, BEC voltage etc, etc. At the moment, stumped! Quote Link to comment Share on other sites More sharing options...
Andy48 Posted August 16, 2023 Share Posted August 16, 2023 It says the Neuron 2 will be upgradeable using Ethos 1.5 which is not yet available. If using OTX, the LUA script seems to need an ESC firmware update: Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 16, 2023 Author Share Posted August 16, 2023 Thanks Andy. Soon after I posted the question I saw that. So now I need to buy myself the STK tool! Sometimes this hobby feels like wading through treacle! Quote Link to comment Share on other sites More sharing options...
Andy48 Posted August 16, 2023 Share Posted August 16, 2023 Expensive treacle at that. 😒 1 Quote Link to comment Share on other sites More sharing options...
Mike Chantler Posted August 16, 2023 Share Posted August 16, 2023 4 hours ago, Tim Kearsley said: Thanks Andy. Soon after I posted the question I saw that. So now I need to buy myself the STK tool! Sometimes this hobby feels like wading through treacle! Maybe a dumb comment, but can you use the URART pins in the JR bay in the TX to do the upgrade in the same way as you use it for flashing receivers? Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 17, 2023 Author Share Posted August 17, 2023 Not dumb at all Mike, the same thought occurred to me. The documentation for the Neuron II doesn't mention it though, only the STK tool as a means of upgrading the firmware. Quote Link to comment Share on other sites More sharing options...
Mike Chantler Posted August 17, 2023 Share Posted August 17, 2023 From my memory, the STK tool has two sets of 3pin outputs and a switch, you use one set and one sw position for flashing receivers and the other for programming things like stabilised s6r. As long as the Neuron instructions say to use the same configuration for connecting the STK for flashing rx I'd be tempted to use the JR bay after triple checking the polarity and voltage of the power pins! Quote Link to comment Share on other sites More sharing options...
Mike Chantler Posted August 17, 2023 Share Posted August 17, 2023 PS if I can find it, I can check the power pin voltage on my STK if you want. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 17, 2023 Author Share Posted August 17, 2023 Thanks very much Mike. If it isn't a lot of bother it would be useful to know the voltage on that pin. Cheers. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 17, 2023 Author Share Posted August 17, 2023 I suspect update via the Tx won't work. The firmware file has a .hex extension and that extension doesn't seem to be recognised, as the "Flash S-port" option isn't offered when you select the file in OpenTx. I know you could rename the file to a .frk extension but.... Quote Link to comment Share on other sites More sharing options...
Mike Chantler Posted August 17, 2023 Share Posted August 17, 2023 I measured it anyway out of curiosity. With ref to the grnd pins: + rail = +5.13v Signals always 0v except when sw in 'config' mode (i.e. not 'upgrade') when port 2 signal = +4.85v. STK connected to USB nothing else connected. Don't think they are terribly expensive. Mike Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 17, 2023 Author Share Posted August 17, 2023 Thanks Mike, it's appreciated. I've ordered the STK tool. As you say, not expensive - £10 to 11, depending on where you go. 1 Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 19, 2023 Author Share Posted August 19, 2023 Well this really isn't going well! The FrSky STK tool arrived today. I downloaded the Windows driver and installed it. The virtual COM port defaults to COM3. Connected up the Neuron II ESC as described in the instructions online, (PWM signal + ground), power up the ESC, click Connect on the configuration web page and it simply doesn't see the ESC at all. I've tried removing the virtual COM port, reinstalling the driver, various combinations of port and DIP switch setting on the STK and all make no apparent difference whatsoever. I've checked cables and all are OK. I'm open to all reasonable suggestions! Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 19, 2023 Author Share Posted August 19, 2023 I should add that I'm using Windows 11 and Chrome browser. Quote Link to comment Share on other sites More sharing options...
Zflyer Posted August 19, 2023 Share Posted August 19, 2023 Pardon me for butting in here, when communicating with elrs receivers I had to download a specific comm port driver, CP210 from silabs. Would that solve your comm port issue? Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 19, 2023 Author Share Posted August 19, 2023 Zflyer, you are very welcome to butt in at any time! Yes, I've downloaded and installed the driver CP210 from Silicon Labs. Device Manager shows it, defaulting to COM3. The FrSky configurator page seems to find it OK. I'm wondering if there's some security issue somewhere in Windows 11 that's preventing proper communication. Quote Link to comment Share on other sites More sharing options...
Zflyer Posted August 19, 2023 Share Posted August 19, 2023 Are using a usb to micro c cable. I have had some that work well for charging but dont allow data bipass. Only found this out by swapping around cables. A real pain till its solved. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 19, 2023 Author Share Posted August 19, 2023 No, no cables involved at all. The STK plugs straight into the laptop. Quote Link to comment Share on other sites More sharing options...
Andy48 Posted August 19, 2023 Share Posted August 19, 2023 Tim, try unplugging any other devices on USB. I found the printer interfered with mine. Quote Link to comment Share on other sites More sharing options...
Zflyer Posted August 19, 2023 Share Posted August 19, 2023 (edited) Have you more than one USB port on the laptop. I have three on mine but one will not work with my card reader. The other two no problem!! Edited August 19, 2023 by Zflyer speling (again tut tut where's the "l" Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 19, 2023 Author Share Posted August 19, 2023 Thanks chaps. Two USB ports on the laptop and I've tried both and no other USB devices attached. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 20, 2023 Author Share Posted August 20, 2023 This morning, as an experiment, I tried l installing the CP210 driver on to an old desktop PC running Windows 7. The result was exactly the same, it apparently scans but fails to find the connected ESC. So at the moment I'm stuck, unable to configure the ESC because my Horus X10S running OpenTx won't run the LUA script FrSky provide and I can't upgrade the firmware on the ESC because the STK tool fails to work. Not impressed, FrSky! Quote Link to comment Share on other sites More sharing options...
Mike Blandford Posted August 20, 2023 Share Posted August 20, 2023 21 hours ago, Tim Kearsley said: . . . Connected up the Neuron II ESC as described in the instructions online, (PWM signal + ground), power up the ESC, click Connect on the configuration web page and it simply doesn't see the ESC at all. I would expect to connect the STK to the SPort signal for an upgrade. Looking at the instructions (I don't have a Neuron II) it doesn't look clear where the green connection goes! Mike Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 20, 2023 Author Share Posted August 20, 2023 Thanks Mike. Well the Neuron II is different from the original Neurons in that it has flying leads rather than a PWM and SPort connector. The FrSky docs clearly show the PWM wires being used for upgrade. I remember configuring the original Neurons with the BlHeli software and it was the PWM connector used then. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted August 20, 2023 Author Share Posted August 20, 2023 OK, solved this now. Despite the FrSky docs clearly showing the PWM wires being used for the connection to the STK, it is, as Mike suggested, the S-port that is used. Having sorted that, I updated the ESC firmware to the latest. The reason for doing this was that the comments against the firmware suggested that it might fix the LUA config script not working on OpenTx radios. Sadly, this is not the case. I can update the config using the STK but it would be rather more convenient doing it from the Tx. Still, I can live with that. Thanks to all who offered help. 2 Quote Link to comment Share on other sites More sharing options...
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