Extended BLDC-TOOL with Watt Control Mode, PPM Cruise Control, individual Throttle-Curve and Android App

That could potentially work because you can adjust center pulsewidth. Download links are in the first post

@dino15309 You can’t do this by software. And you can find the link in the first post of this thread. Which remote do you use?

I use the Quanom pistol grip. I didn’t know much about RC remotes and how bad this one was until it was too late…

@Ackmaniac, where can we find the changelog of your app ? It seems that Play store often updates the app, but no way to find out what has been changed. :wink:

Usually I don’t update the change log. So the best information you can get about changes is here in this thread.

The changelog of the app

  • improvement of the sound and graphic
  • now you can view your speed in full 4k resolution.
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Any chance of duty cycle with nuetral? Watt mode is cool, just favor duty cycle and think other people might to.

Not at the moment. Want to finish some other stuff first and i think i will add my modifications to the VESC-Tool when it comes out so it makes more sense to implement it there. I still think current or watt control is still much more controllable. And if you think the power is too weak then simply raise the settings. Duty Cycle control makes only sense to me when you ride offroad and change the surface you are riding on. For example when you change from tarmac to wet grass or sand. Because then the power output would be raised automatically when the wheels stat to spin slower.

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Yeah, waiting on vesc tool, but it’s always being delayed and with all the bad publicity I wouldn’t be surprised if it it’s not compatible with anything besides vesc6. In app weekly firmware updates I think?

It’s all preference, but I want duty cycle to have more control. For example I measured 3000watts+ on accelerations on flats. So if I set max watts at 1500 per vesc to have that power on reserve. Once I reach my max speed of let’s say 30mph it only takes 750watts or 1/4 throttle to stay there. So going 15mph it only takes 1/8 throttle to maintain speed. If it was duty cycle, in theory I would use 1/2 throttle for 15mph and full throttle for full speed.

The way I see it current/watts is not leanier how you said when switching surfaces, also if theres hills, a small driveway, if theres a small rock in front of the wheel, if you want fast acceleration. With speed you want to increase linearly​ if you’re going slow, fast, up a hill, off road. And what happens if I want to pull 6000 watts I would use 1/16 throttle for 15mph? Duty cycle from my understanding would still be 1/2 throttle. Duty cycle is not perfect or for everyone, but I like that it’s predictable

And there is the problem. It is not predictable. In theory it simply says that you want a specific speed. And it uses all the power that is allowed to get there. Even if you only give 1/4 throttle from a standstill then it does full power till you reached 1/4 speed. There is a bit more to it but basically that is how it works.

That’s why the Evolve remote is so damn touchy and can’t be adjusted

I understand your concern of pulling infinite amps, but I don’t think that would be the case. Especially with vesc because you can set limits on amps. The thing that will change is the way you control those amps. With a decent long through remote you can still get up to speed smoothly and not use all those amps. And if you want to accelerate faster, youll have all the power in reserve, you just move your finger faster. It’s not as bad as you make it out to be, I think you should try duty cycle.

@eboosted I tried a evolve and yeah it’s a bit touchy. Not sure if it’s remote not having much range or because with escs you can adjust the punch level to your liking.

Hey @Ackmaniac,

I’m gonna try out your custom f/w and had a question in regards to throttle. Does your predictable throttle mean that 50% throttle = 50% speed as well? With current control, I have a decent understanding that once current overcomes load, the motor will try to rev at its rated kv. However, I don’t think I’m fully understanding the intricacies of watt control.

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No it doesn’t mean 50% of speed. It is also a bit strange that everybody wants that behavior. Your car also doesn’t work like that. When you give half throttle in the first gear then you also easily reach full rpm. And not half speed of that gear. The problem in current control is that you loose throttle range at higher speeds when your battery max and motor max is different. Because you control the motor current with the throttle. Watt control still gives you full control over the power even at higher speeds. Explained it a couple of times but for that you need to understand how duty cycle works. But long story short. Just give it a try, i guess you like it. And with the app you can change from current control to watt control in a second. And by the quick change you can really compare the 2 control modes.

Finally makes your board more controllable. You don’t have these moments anymore where the board power let’s you loose balance and gives you the feeling that you are a passenger instead of the pilot. Especially when you use high current settings with lot’s of power.

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Thanks. I’m not saying I’d like throttle based speed control, just simply trying to understand, in finer detail, how it’s different than current control. Still don’t have a clear idea, but maybe it’s something I have to try to understand.

FWIW, I’ve been using the Watt mode, and it works great! Ken

Hi guys,

@Ackmaniac, you’ve put in crazy amounts of work and I’m excited to use this but have run into a wall…

I’m trying to flash my VESC (4.12) with your modded firmware (V2.54) but I get an error where it says connected initially then ‘no firmware read response’.

I’ve skimmed through all 1,176 posts above but nothing solves the issue. Even pressing connect and upload immediately after. What am I doing wrong?

Everything is connected and turned on, I just can’t get a response from my remote and figured it might need a setting changed in the BLDC Tool (not used this VESC nor configured it previously).

Thanks for any help,

Youssless

So you didn’t flash it with my firmware mod. Seems that the VESC has problems and that the original firmware isn’t even flashed correctly. You can try to upload it via a Stlink programmer. But maybe this VESC has bigger problems.

Let me explain how I believe watt control works, @Ackmaniac correct me if I’m wrong. It seems to be a combination of current control and duty cycle control. When you first begin to accelerate it controls the watts by controlling the current however once you have reached a speed where the current drops and the duty cycle is constant, it controls the watts by changing the duty cycle. This leads to fine control of acceleration using current control during startup and then fine control of speed using duty cycle when going at faster speeds. I hope that makes sense.

If that were the case wouldn’t speed by limited by throttle position. He said in his last post that it wasn’t.