Nanjing far driver controllers
- Thread starter j bjork
- Start date
amberwolf said:
Hi Amberwolf,
I mean RPM at the motor, just like how the bluetooth one displays it but would be nice to have a dedicated one without needing to hook up the phone all the time.
its just a nice to have i suppose. like with cars, i get accustomed to know RPM at the motor at what speed im at.
Then you could use something like this:
https://www.amazon.com/Digital-Display-Tachometer-Inductive-Proximity/dp/B078N2VN75
though which sensor you could use might vary depending on the motor design and placement.
There's a bunch of these kinds of things in different styles and with different kinds of sensors; that's just the first google hit on
https://www.google.com/search?q=rpm+sensor+and+display
another possible search is
https://www.google.com/search?q=tach+sensor+and+display
or
https://www.google.com/search?q=tachometer+sensor+and+display
https://www.amazon.com/Digital-Display-Tachometer-Inductive-Proximity/dp/B078N2VN75
though which sensor you could use might vary depending on the motor design and placement.
There's a bunch of these kinds of things in different styles and with different kinds of sensors; that's just the first google hit on
https://www.google.com/search?q=rpm+sensor+and+display
another possible search is
https://www.google.com/search?q=tach+sensor+and+display
or
https://www.google.com/search?q=tachometer+sensor+and+display
eee291
100 kW
The battery has to be under 115V when fully charged, you may also have trouble with regen.
j bjork
1 MW
On page 25 in the manual they claim 28s "ternary lithium battery" (before that is lead acid, after comes Lithium iron phosphate battery)
From what I heard 121,5v is where it trips for overvoltage, I sure hope that is correct as I plan to use one on 30s when I couldent get a 1081800
From what I heard 121,5v is where it trips for overvoltage, I sure hope that is correct as I plan to use one on 30s when I couldent get a 1081800
Dui ni shuo de dui
100 kW
AMP ADRENALINE said:
Thanks for all this very valuable information, these documents will help me a lot.
j bjork
1 MW
What do you use to connect to a computer?
Does it have to be with an usb adapter or can you connect to the included Bluetooth adapter?
Does it have to be with an usb adapter or can you connect to the included Bluetooth adapter?
ebike11 said:
My Fardriver controller (ND96850) stops working over 121.5V and shows an error. I tried this with a regulated power supply.
As this is only a software limit , it could be that the parts inside the controller can do a little bit more. My controller stopped working bevore at around 90V as it told me it was a ND72850, after flashing the right firmware it has the limit now set to 121.5V.
It could also be that they build only one version and limit the max volts with the firmware, but who nows.
But I killed two 90V rated Sabvotons (72150 and 72260) with a 21S battery, using flux weakening and regenerative braking.
If you want to use flux weakening than you should have a few volts more left to the (real) limit.
My two dead Sabvotons had cost me more than the Fardriver ND96850. :wink:
Dui ni shuo de dui
100 kW
AMP ADRENALINE said:
Would you, by any chance, have a picture of the other side of your sensor?
I've got myself a sensor for the ME1507, which looks very similar aside from the PCB shape and connector positioning. Unfortunately I cannot find any kind of documentation and I really don't want to mess anything up because it was already very difficult to get the sensor in the first place...
Basically I'm trying to determine the pinout in order to make myself a cable, but the PCBA has no markings to indicate what's what....
Is there any way for you to tell me which pin is going where? Would be amazing, thanks in advance for your help!
Here is the version I got, I tried to find the datasheets for these components but no success:
LCLabs said:
I have mine at something like 40 and 50 but only get maybe 30A in use. On the stand if I rev to full speed I can see the difference, but not when riding. I think these regen changes make more difference when the motor is spinning near to it's top rpms.
Dui ni shuo de dui
100 kW
MMD said:
I just got a 841800 and experienced the same problem. I happen to know people who work directly with the factory and they told me this is a firmware issue, there's a bug in the firmware. So this has nothing to do with any parameter you've set up, you've basically done nothing wrong, and no version of the app will fix that (well at least none does as of today).
I've been told that the only solution is to send it back to the factory for reprogramming, but I've also been told that they probably won't do it since they don't care about DIYers at all. Great.
The only hope I still have is that the seller (which was not the factory), told me that I can try to flash a different version of the firmware. I hope it won't brick the controller and that this will solve the issue. I will report here after I try, so wish me good luck...
Meanwhile I cannot recommend people to use this product anymore, so I will edit my post in the first page. The product itself is great when it works, but the documentation is horrible, the app is not reliable, the firmware seems buggy in a dangerous way and worst of all we don't get any kind of support by the factory.
It's getting harder and harder to find decent controllers, I don't understand why we should go through these kind of hassles, what a pain.
If someone could get them to release their code as open-source, I'd guess some of the remarkable people around here could fix it, then the company itself could still make plenty of money selling their hardware, in fact even more than they do now, because users could use the OSFW version instead of whatever "broken" factory version it ships with.
I realize it will never happen...but it would certainly fix the problem.
I realize it will never happen...but it would certainly fix the problem.
j bjork
1 MW
Dui said:
Same thing here, I have tried a lot but havent been able to get any decent throttle control.
Im copying some of the text from my most recent test in my yamaha thread here:
I have been out again trying to tune the throttle behavior, I havent been very successful..
It is a disaster, the throttle behaves like a rubber band. The softer you set it, the worse the backlash.
The only almost rideable setting I have found is sport, throttle rate 224, ECO Coeff 8. (the most aggressive setting possible)
Then the throttle is super twitchy, you cant really walk with the bike and just hold a little throttle to not have to push.
It will move from off to a little wheel spin on gravel. But when up to some speed it is relatively responsive with not too bad backlash. (Meaning not still pulling very much after throttle release)
The ECO Coeff seems totally useless, anything other than 8 is totally powerless. At least when you are in sport mode (I didnt try in other modes)
I tried ECO throttle also, it is very smooth from a stand still. But then if you twist the throttle a bit more you will have crazy rubberband effect, a big wheelie that keeps rising after throttle release
I tried messing with the "Release throttle" setting again, still I am not sure if it does anything. 7 for sure was not better than 0..
I also tried the speed Ki/Kp settings, not sure if there was any difference.
The regen at throttle release helps, but if I use that the throttle dosent always react afterwards
How do you know what firmware's are good and what are bad?
Edit, here is what it says on mine:
Dui ni shuo de dui
100 kW
j bjork said:
Absolutely no idea, sorry. :|
I'm currently discussing with the seller of the controller, which in turns discusses with the factory. Hopefully they will find a solution...
Yesterday the seller sent me a .hex file, which I believe was a new firmware. But since his answers to my questions were a bit too vague for my taste I did not try to flash it (in fear it would brick the controller) and asked him to confirm with the factory one more time today after re explaining him the issue as best as I could. I really hope he got it and he'll be able to explain it to the factory so they send me a corrected version...
I won't lie, I have very little hope at this point. I do know some people who managed to fix the issue by having it reflashed so I know for sure this is doable, but I'm not sure it is doable in my case since I'm just a DIYer, not someone who has a company with nice forecasted sales volumes.
Anyway, let's hope it'll be fixed this evening...
j bjork
1 MW
Do you know if the throttle release setting has any effect on the ok (or your) firmware?
It dosent seem to do anything on mine.
I am in contact with siaecosystems too now, I will see what they say.
It dosent seem to do anything on mine.
I am in contact with siaecosystems too now, I will see what they say.
Dui ni shuo de dui
100 kW
j bjork said:
Nope, it did nothing on my controller, at least nothing really noticeable to fix the issue. I tried every possible thing, none worked.
Today, a good news and a bad news:
-Good news is that the .hex file they sent me did fix the throttle lag issue, now the controller behaves just like any normal controller, no weirdness anymore! Great!
-Bad news is that this update somehow made the bluetooth unresponsive. I can connect to the bluetooth module, but then it doesn't manage to communicate with the controller, so basically I can't change any setting.... Tried to reinstall the app several times, tried different versions of the app on different phones... Same result.
I don't know who does the firmware at Nanjing Fardriver factory but he needs to step up his game a notch, it's getting annoying now.
So, now we are sure that the problem lies in the firmware, there's no fiddling around with the settings in the app that can solve the throttle lag issue, at least as of today (maybe they'll release an app that will allow to set the throttle lag by ourselves someday, who knows, but right now it's not possible).
So anyone having this issue, the only fix you could hope for is for a new, stable firmware to be released.
I can't share the firmware they sent me to you guys just yet because it is clearly not stable, but I will if I get one that works. That being said, I'm not sure that flashing a random firmware made for me will work, it is possible that every firmware has to be matched with the controller serial number, I don't know.
j bjork
1 MW
How do you communicate with the controller now, by wire and computer?
I mean, I suppose you had to do a self learn and set it up like you want it after the update?
Do you know the name of your old and new firmware?
I mean, I suppose you had to do a self learn and set it up like you want it after the update?
Do you know the name of your old and new firmware?
