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Messages - LukeZ

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1
Show and Tell / Re: 3D Printed T-35
« on: June 05, 2018, 12:55:35 PM »
Good job Dean. Not many people have designed and completed an entire 3D printed model, so you have joined a small club indeed. No one can say you chose an easy model to start with either!

2
Open Panzer Help / Re: Problem after update OP Config
« on: June 02, 2018, 02:31:48 PM »
Glad to hear it.

3
Open Panzer Help / Re: Shutdown on throttle w/StugIII
« on: June 02, 2018, 01:21:41 PM »
So my question after all this is: Does the board sound shut down if the current is exceeded on the A & B (turrent/elevation) motor outputs?? And would it pulse the motor if exceeded as above??

Something seems haunted about this Stug. Can the board shut down if you exceed current limits on the onboard motor drivers? Yes, but indirectly. The onboard motor drivers are fed directly from your battery, they do not share the same voltage as the TCB processor which is running at 5 volts. However, if you draw too much current from your main battery its voltage will drop, and since the main battery also feeds the TCB processor, if the voltage dropped enough that could indirectly cause a brownout. However, it is not clear to me that you have actually experienced a reboot - your sound card played the engine shut-down sound but that is not necessarily the same as the board rebooting. You should be able to tell if an actual reboot happened by watching the red/green LEDs on the TCB closely, or experimenting with this stuff while Snooping. I agree that a reboot could indicate an over-current condition but if you are not rebooting then there is probably something else going on.

I can't account for the pulsing motor behavior but as the problem seems to be fixed after replacing the motor I can only assume the original motor was faulty and causing the pulsing itself. The TCB should not generate any kind of pulsing signal unless something is really wrong (possibly a bridged solder joint over multiple processor pins for example).

4
Open Panzer Help / Re: Problem after update OP Config
« on: June 02, 2018, 12:50:34 PM »
I have not encountered this problem before. libusb0.dll should be present in your OP Config install directory, you can go look to be sure it is there.

If not, uninstall OP Config, then re-install and see if that fixes it.

5
Open Panzer Help / Re: Airsoft ESC control
« on: June 01, 2018, 11:37:35 AM »
Good job! It is satisfying to observe someone comprehend the possibilities and then put together a new combination of effects no one had thought of before. As soon as you described what you did it made perfect sense even though it had not occurred to me initially.

My goal was to make the TCB as flexible and adaptable as possible, and then sit back and watch what people came up with. This is a great example of a unique and interesting application. Thanks for sharing.

6
Open Panzer Help / Re: Tamiya Flash Unit
« on: May 31, 2018, 09:56:45 PM »
Unfortunately the Tamiya flash units can only be used with the Tamiya DMD, they are not compatible with the TCB or any other aftermarket controller that I know of.

7
Open Panzer Help / Re: Airsoft ESC control
« on: May 30, 2018, 10:05:16 AM »
I'm operating under the assumption that when given a momentary signal the MERF fires a paintball. Perhaps that is not correct, if so, ignore my ramblings.

The General Purpose I/O ports are not RC outputs - they can be set to on or off, that's it. You can also set them to momentarily turn on then off using the Pulse function, this is what I theorized might be possible to control the MERF assuming it uses a 5 volt logic-level input. The pulse is very brief (1/3 of a second). If you want a custom length of time you could use the Aux output which allows you to define the pulse time as anything from 1/100th of a second to 5 seconds (the Aux output momentary function is called "Flash" instead of pulse), and yes the Aux output is also 5 volts. You can read more about these things in the Wiki.

But maybe I don't understand how the paintball controller works. If instead of a momentary signal it requires feedback from some kind of "selector nub" as you call it, then the above ideas might not work (unless the selector nub can be fed into the MERF directly - I don't know enough to speak intelligently on this topic).

You are correct, the Airsoft output on the TCB is equal to TCB battery voltage. It seems as if you are planning to feed the "selector nub" back into the TCB's Airsoft plug as the trigger connection. Maybe this would work, maybe not. Examine the schematic on the airsoft page closely, your paintball circuit will need to operate exactly the same way and at the same voltages otherwise you could have issues.

My impression is that neither of us actually know enough about what is required to say whether any of this will work. You'll have to do some experimenting or researching about the products you have. Good luck, and don't fry anything! :)




8
Open Panzer Help / Re: Airsoft ESC control
« on: May 29, 2018, 05:23:31 PM »
Looking at the Merf 3.2 it may be possible to connect the trigger wire directly to the TCB without using a relay so long as they share a ground, but without further detailed specifications it is hard to be absolutely certain, but it expects a 5v trigger then I don't see a problem.

You could also perhaps more directly use one of the General Purpose I/O ports instead of trying to hack into the Airsoft output. You just need to assign the output to whatever radio channel you also assign the cannon fire function to. If a relay is needed there are instructions for connecting one in the Wiki along with recommendations of inexpensive ones that are plug-and-play, such as this Keyestudio.

9
Open Panzer Help / Re: Banggood dual channel motor controllers.
« on: May 27, 2018, 03:15:02 PM »
The first controller you linked to (H-Bridge) has been mentioned before, I think on RCUniverse. It will not work because it doesn't accept RC inputs. It is an interesting piece of gear and operates very similarly to the Scout, Pololu, Sabertooth, etc... The only thing it lacks is a small processor to convert RC signals to the kind of signal the controller chips require. It wouldn't be hard for the Chinese to add this and then it would be perfect. You could get it to work with a small Arduino Nano in-between the TCB and the controller along with some code taken from the Scout project. But the wiring would be a mess and by the time you get all the little bits and bobs it would not save much money.

The second ESC you list will work just fine but you will need to buy 2 of them. That is the same as with any other ESC. The HobbyKing XCar 45 is probably of higher quality though.

The Sabertooth and Pololu controllers are the best options for performance and simplicity. Yes they cost a bit of money but RC tanks are expensive!


10
Show and Tell / Re: Asiatam FAMO SdKfz. 9
« on: May 26, 2018, 05:35:06 PM »
Thanks Jurgen. I've posted the Zip for download on the GitHub here. Navigate to that page then click the Download button.

11
Open Panzer Help / Re: Airsoft ESC control
« on: May 23, 2018, 06:16:22 PM »
Unfortunately there isn't a good way to accomplish what you need. Yes, the TCB can have unused RC outputs depending on your setup, but those are not internally connected in any way to the airsoft function.

As for the other way around,
e; as a quick thought, maybe I can change the positive recoil/airsoft output to PPM to control the ESC?
...this is also not possible because once again, the airsoft control knows nothing about PWM (I think you mean PWM, not PPM) and is incapable of controlling an ESC.

With major software changes some solution would be possible but this is one of those cases where the juice is not worth the squeeze.

I think you are left to control this the way you would in any other tank - directly and manually from your radio. You can use one of the RC outputs on the TCB to pass-through a channel signal from your radio if you don't have extra PWM outputs on your receiver, but nevertheless nothing about this will be tied to the TCB's cannon fire function. You will need to manually manipulate whatever control on your radio you have assigned to that channel in order to fire the airsoft. If you need a slower speed on your ESC, you can set that on your radio using end-point adjustment.

Hope that makes sense.

12
Open Panzer Help / Re: Battle system failure
« on: May 19, 2018, 05:28:22 PM »
There is no standard LED voltage, they are all over the map. That is why you need to ask RCTA what the specs are, then you will know for sure. If they are getting hot that is definitely not good.

Yes, I believe the IR receiver will still work regardless of the LEDs. As I said before, you can confirm using Snoop.

I am not sure I would agree the 5th wire is redundant on the Tiger Ring. Does RCTA say that? Where do the LEDs get their positive voltage signal?

Again, we need more information from RCTA. Until then we're just making wild guesses and burning up electronics.

13
Open Panzer Help / Re: Battle system failure
« on: May 19, 2018, 04:45:18 PM »
If you're looking at what's printed on the board as shown on the RCTA page (attached below), the "5V+" label is voltage to the IR receiver which is a different component than the indicator LEDs. Almost all IR receivers operate at 5 volts so that is what we would expect.

Most LEDs however do not operate at 5 volts, and there is nothing on the board that indicates what voltage those LEDs require. All I see is "L-"  which would indicate the negative terminal for the LED connection (the unmarked fifth pin is presumably the positive terminal for the LEDs). So we know the LED polarity, but we don't know the LED voltage. The TCB provides 5 volts but almost certainly a limiting resistor is needed to bring the voltage down to probably something like 2-3 volts for those LED. The TCB doesn't include those resistors because it has no idea in advance what kind of LED you might use. If you use the Tamiya apple which most people would, the resistors are already built-in so there again having extra resistors on the TCB board would only make things worse.

Ask the RCTA guy to give you the specifications for those LEDs. He really should have included them with the product and posted them on his product page.

14
Open Panzer Help / Re: Battle system failure
« on: May 19, 2018, 03:16:40 PM »
I just noticed on the RCTA Panther ring page there are photos of both the top and the bottom of the ring. I see no resistors anywhere on the board. Unfortunately he provides no specifications for the LEDs he uses, but if they are common types it's quite possible you may have burned them out. This could explain why they worked initially but then quit, an LED can handle over-current for a while but will eventually self-destruct.

An email to RCTA is in order I think...

15
Open Panzer Help / Re: Battle system failure
« on: May 19, 2018, 03:10:42 PM »
Hi Tom, it's not entirely clear from your description, but are you just having issues with the indicator lights on the Apple ring? In other words, IR sending and receiving work, but the notification LEDs don't?

I have not tried the RCTanksAustralia ring with the TCB before, you are probably the first person. The Tamiya Apple comes with current-limiting resistors built-in, but from the description page at RCTA it's unclear whether the Tiger Ring does or not. The TCB provides 5 volts to the indicator LEDs with no current-limiting, so you definitely want to check with RCTA if any resistors need to be added. The pinout on the Tiger ring does seem to be the same as the Tamiya (which is the same as the TCB) so that's good, but it won't hurt to double check your connections.

What could be of use to you in troubleshooting is to connect the TCB in your E90 to OP Config in Snoop mode and then fire at it from your other models. Snoop will tell you if you are receiving hits, regardless of whether your indicator LEDs are working or not. If Snoop shows no hits then make sure you have the right IR protocol selected or swap back to the Tamiya Apple and see if that fixes it.

Is there anything on the config software that can force the indicator lights on just to test?
Yes, you want to check the option "Blink all lights when Radio signal lost" on the Lights tab of OP Config. Then you can just turn your radio off and your apple lights will blink light crazy, so that's a good way to test they're working.


I'm sure we can figure out the problem, and from your description it sounds like you had it working at one point, which is promising. We just need to narrow down exactly what is working and what is not, and under what exact conditions.

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