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Messages - LukeZ

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TCB Dev / Re: 3 Channel Pistol Grip Radio?
« on: March 15, 2018, 02:46:49 PM »
Well if you do find a pistol grip on a protocol for which PPM/SBus receivers can be purchased I would be interested to know about it. The GT3C is a great transmitter with the community firmware but it runs the original FlySky AFHDS (not AFHDS-2A) protocol for which the receivers were rather plain. It's potentially possible some of the newer AFHDS-2A receivers are dual compatible with the older protocol, but I don't know that for sure and someone would have to give it a try.

Open Panzer Help / Re: "Manual" transmission possibilty
« on: March 14, 2018, 09:05:37 PM »
I also feel it like having a total speed control. When in first speed you have all the stick (instead of half as stock) for selecting the exact speed you want, so I can really crawl like a crippled turtle if I want to.

This sounds like a very attractive benefit to me, I have always wanted very smooth control at extremely slow speeds. I used things like accel/decel constraints as workarounds but your gear system would give you even finer control by effectively increasing the resolution of your throttle input several hundred percent.

I hope some other people will find all this work you've done useful. In my experience many people read and utilize the information on these forums that never post, so even if we don't hear from them I suspect others have taken an interest in your experiments and are following along.

I will still consider integrating this functionality into the TCB firmware someday as I have the time, but I am entering a phase of life where development time is limited.

PS: Your jacket definitely doesn't look 17 years old! Here in America we'd have to say congratulations to someone if they could still fit into the same clothes 17 years later...

TCB Dev / Re: 3 Channel Pistol Grip Radio?
« on: March 14, 2018, 08:44:42 PM »
This would technically be possible but may not get placed very high on the priority list. I'm a bit behind on feature requests at the moment and I'm likely to devote time only to the most useful ones until I catch back up and who knows when that will be.

I don't know what brand radio you have but the first question you to ask is whether you can even source a PPM/SBus receiver for it. There are also some pistol grip radios with more than 3 channels, the inexpensive FlySky GT3B / GT3C is very popular and can be hacked to give 8 channels but I'm still not sure there is a receiver for it that would be compatible with the TCB.

Show and Tell / Re: Asiatam FAMO SdKfz. 9
« on: March 14, 2018, 02:11:31 PM »
Do you have a link to the product? That might be useful, I can't see the relay side.

To control it you will want to connect the VCC, GND and IN pins on the relay to the -, + and signal pins of one of the GP I/O ports on the TCB. Unfortunately the order is not the same so you won't just be able to plug and play directly with a standard servo lead as you would with the units previously recommended. You can still use a servo lead but you will have to swap the +/- pins so everything lines up, double-check your work! 

Then in OP Config on the Lights & IO tab set the general purpose I/O A or B (whichever one you're using) to Direction = Output and Type = probably Default Low but you might have to experiment, that's where the documentation for the device would be useful. Then assign some trigger to the appropriate function to control it.

Open Panzer Help / Re: hello all new to forum
« on: March 12, 2018, 04:38:20 PM »
Welcome to the Open Panzer club Brian, and glad to hear you are happy with your experience so far. Keep us posted on how you get on and remember everybody likes a picture!

Open Panzer Help / Re: "Manual" transmission possibilty
« on: March 12, 2018, 04:33:57 PM »
Good show Rad, and I enjoyed your daughter's sound effects. I also nominate you for the best jacket award! :)

I think the video does show the shifting at work and it seems to operate as you would expect. Like you say, one would really need to get behind the sticks for the full experience. What are your impressions when driving, does the shifting add the realism you had hoped?

Open Panzer Help / Re: "Manual" transmission possibilty
« on: March 08, 2018, 06:31:46 PM »
Hi Rad, you're the first person on earth I've found who prefers Rar to zip, but then again I don't know many people on earth out of the total. I've allowed Rar attachments to the forum so you can go ahead and try to post it.

For those who would like to read more about Rad's radio programming adventures please see his thread on OpenRCForums: Realistic driving in land vehicles

At some point you'll have to try to get a video of the model in action, if you think it would illustrate the functionality. What do you think of it?

Open Panzer Help / Re: No engine signal
« on: March 08, 2018, 02:26:55 PM »
Easy to overlook without sound! Glad you got it working.

Open Panzer Help / Re: 1/6 scale compatability?
« on: March 08, 2018, 02:25:54 PM »
The 2x32 should definitely meet your requirements and then some, if you don't mind the price. Theoretically the Hobby King XCar 45A ESCs at approximately $10 bucks each should also work, but for some reason it doesn't feel right to put something so cheap into a 1/6th scale model!

However you could buy one of those or a similar Chinese cheapo just to do some testing to determine your current draw, before you spend the big bucks.

Keep us posted on your build, I'm sure there are a lot of people who will be interested to follow along. If you have a build thread on some other forum you can post a link to it here so others can find it.

Open Panzer Help / Re: No engine signal
« on: March 08, 2018, 12:03:51 PM »
You need to create a function to start the engine. Until the TCB gets the engine start command, the vehicle will not respond to throttle and steering.

Assign this function to a switch, or if you don't want to mess with that check the "Auto-start Engine With Throttle" option on the Driving tab.

Connect your TCB to OP Config in Snoop mode to verify that you are able to start and stop the engine.

Open Panzer Help / Re: 1/6 scale compatability?
« on: March 07, 2018, 01:50:00 PM »
First of all, motor specs are great but as I keep preaching here until I'm sure everyone is sick of hearing it, measure your current draw! There is no substitute for taking your own real-world measurements. Of course I understand in some cases (especially 1/6 scale) taking a measurement probably requires having a speed control in the first place since it wouldn't be safe to just hook up the motors directly to your battery. So there is a bit of a chicken/egg conundrum and you may need to buy something first, in which case the specs are the best you have to go on. But even after you buy a controller, still you should take a measurement so you know whether you are within reasonable operating conditions or not.

But yes you are correct, you will need to buy two standard RC car/truck brushed ESCs, or a suitable dual-motor serial controller.

Of the latter you could look at the Sabertooth 2x25 (two motors at 25 amps continuous/50 amps peak) or the Sabertooth 2x32 (two motors at 32 amps continuous/64 amps peak). Both can handle well above 12 volts so that is no problem.

Of the former (RC ESCs) there are a plethora to choose from. Castle Creations and Holmes Hobbies are two high quality brands but there are plenty of less expensive foreign brands as well. ESCs in this range are likely to have various settings and options which you may need to adjust for best use with the TCB, and it might be easier to do the setup on them with standard radio gear (ie, just plug directly into an RC receiver), and only after the settings are saved then connect to the TCB.

Remember when using an RC speed controller that has a BEC (virtually all of them), you must remove the center pin from the servo connector before plugging it into the TCB! There is more information about this in the Wiki.

I have been waiting for someone to use the TCB in a 1/6th scale model. Whatever controller you choose keep us posted and I will be happy to help you with any setup issues you encounter.

Out of curiosity what brand Tiger are you building?

Open Panzer Help / Re: No brakes
« on: March 03, 2018, 11:30:44 AM »
Ok, it makes sense now. I should clarify that the TCB can't issue a "brake" command to an RC speed controller, what we call brake is actually just "stop." Most RC model tanks have so much internal resistance in their gearboxes that as soon you remove power from the motors the vehicle stops immediately.

Now some RC speed controllers do actually have a brake functionality built in to them but as you discovered the TCB may or may not utilize it. Speed controllers used for RC cars typically have two modes which RC car guys call "blinky" and "crawler" (blinky because an LED on the speed control usually blinks in this mode). If the controller only has a single mode it is usually blinky. In blinky mode (used for race cars and such) the ESC has a built-in brake function which is activated by moving the throttle in the opposite direction of travel, the consequence however is that to change direction you have to "double-tap" the throttle: move in the opposite direction once to brake, return to neutral, then move in the opposite direction again to reverse, sometimes after a delay.

The TCB was designed to take care of all this itself in order to give the user simple control through OP Config of how this works (which is why we recommend using "crawler" mode on the ESC, in this mode the ESC does whatever you tell it without delay, and then the TCB can decide if delays need to be introduced). But of course this assumed that your model will stop immediately when power is removed.

In your case it seems your speed controllers are in blinky mode and if we remove the change direction delay on the TCB you are able to brake by using the double-tap method intrinsic to your speed controller.

Now if you were using something like the Pololu or our own Scout serial controllers, those do have explicit brake commands which we can send them over the serial port so in that case you can configure OP Config however you want and they will still literally brake when told to brake, as opposed to just stop (the Sabertooth doesn't have this ability).

I apologize for the confusion and assumptions which were not always clear, but in the end it sounds like you have found a workable solution! I'm glad you're enjoying the project.

Open Source Sound Dev / Re: Prototype Board Question
« on: March 02, 2018, 08:12:01 PM »
Also I should add our current firmware would not work on this early board, but it sounds like you would be using your own firmware.

Open Source Sound Dev / Re: Board question
« on: March 02, 2018, 08:09:33 PM »
Hi Shivas, you're right, the Open Panzer sound card is not in production and in fact the design is still being refined. You can access all the files for the latest revision of the hardware on the Downloads page, the latest version requires the addition only of the Teensy; the amplifer/SD card holder and other stuff has been moved to the carrier board itself (so you no longer would use the PJRC prop shield).

But if you are interested specifically in the monstrosity that you've pictured there I've attached the Eagle files, bill of materials, and preformatted Gerbers you can upload to OSH Park if you want to have bare boards made (you might need to generate your own Gerbers from Eagle if you try to get boards at a different service). That board was very simple and worked by stacking a bunch of off-the-shelf stuff from PJRC onto it, it was pretty crude and the board itself added basically nothing other than a place to stick everything and a 5-volt LDO.

Let me know if you have any more questions.

PS: I'm going to move this thread to the Sound forum.

Open Panzer Help / Re: No brakes
« on: March 02, 2018, 10:26:15 AM »
Braking works regardless of that setting, but if you're satisfied then that's ok. There is probably something else going on.

Do you have any deceleration constraints specified (momentum)? If not you probably won't notice much effect even when braking since the vehicle will stop as soon as you release the stick anyway.

You can also verify that braking is indeed working by looking at the lights on the board: when both the red and green LED are on solid at the same time, brake is being applied. You can also verify by manipulating the throttle while connected in Snoop mode, the brake command will get printed to the console window whenever active.

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