spattex Posted September 12, 2017 Author Share Posted September 12, 2017 A total of 210 Km driven with the modified firmware and still going strong, no problems at all. Link to comment Share on other sites More sharing options...
RooEUC Posted September 14, 2017 Share Posted September 14, 2017 I'm glad you're enjoying it and thanks for keeping us updated. I am too afraid to try this on my E+. The older I get, the more risk averse I become. I hope this mod never fails you. Link to comment Share on other sites More sharing options...
spattex Posted September 15, 2017 Author Share Posted September 15, 2017 9 hours ago, RooMiniPro said: I'm glad you're enjoying it and thanks for keeping us updated. I am too afraid to try this on my E+. The older I get, the more risk averse I become. I hope this mod never fails you. I am enjoying the wheel how it is now when you get it how to ride a wheel with the E+ i whas hitting constant the max. speed limit. Now the cruising speed is around 26 27Km/hour and it's much more fun to ride. The battery pack upgrade did the trick so i can ride a comfort distance of 20 a 30Km and i hope the hack will survive... Link to comment Share on other sites More sharing options...
Hunka Hunka Burning Love Posted September 18, 2017 Share Posted September 18, 2017 Has anyone tried flashing a Ninebot One C+ to go at E+ speeds? Link to comment Share on other sites More sharing options...
spattex Posted September 19, 2017 Author Share Posted September 19, 2017 On 18-9-2017 at 7:03 AM, Hunka Hunka Burning Love said: Has anyone tried flashing a Ninebot One C+ to go at E+ speeds? That's no problem, only i think that you must upgrade your battery pack if you go on higher speed. Link to comment Share on other sites More sharing options...
pollytronman Posted December 17, 2017 Share Posted December 17, 2017 Hello @spattex How it is going the hacked E+, any problem or issue? I'm thinking of doing it myself, but I'm afraid of soldering the 2 cables to the board and breaking something, is it too much difficult? The resistors where the cables are attached seem tiny. Any advices? Thanks! Link to comment Share on other sites More sharing options...
Inductores Posted January 13, 2018 Share Posted January 13, 2018 How-to in Spanish https://youtu.be/p_1-G9WFFHo Link to comment Share on other sites More sharing options...
Cranium Posted January 15, 2018 Share Posted January 15, 2018 The control board of the E+ is capable of delivering the additional power but the batteries are going to be pushing their limits. The P was supposed to be capable of 800W continuous with a burst being somewhat higher (don't know the specs for that). The E+ is a 500W motor with bursts somewhat higher. The control board uses the same power delivery MOSFETs as the E+ which are capable to deliver the power required by the P [on paper]. At 800W with nominal voltage of 55.5V, the E+ will be drawing 14.4A. This is a shared current by the batteries in parallel so each battery string in series will see 7.2A. The batteries are rated up to 10A so the pack is theoretically capable of 1,110W at the nominal voltage. The batteries in the P are rated at 20A so the pack is theoretically capable of twice the power. http://forum.electricunicycle.org/applications/core/interface/file/attachment.php?id=3038 The Battery Management System of the E+ is an unknown. One of the functions the BMS protects against is over-current. I don't know what that setpoint is but you never want to exceed it. Another issue is that as you reach higher power levels and get closer to the limits of the battery, you will get voltage sag. It will recover when power is let off but this may be seen to the control board as a low battery causing pre-mature tiltback to slow you down. The motor I have no idea about. I've never opened my motors up to snoop around. Link to comment Share on other sites More sharing options...
exoplanet Posted January 15, 2018 Share Posted January 15, 2018 Thank you. I have experienced the voltage sag. it is annoying. what design measure would have to be changed to get rid of it? Also. riding up hill, but at the same speed as flat draws a higher current. Could this be dangerous? with the bms cutting off?? Or will tiltback save you, keeping you under the current limit? Link to comment Share on other sites More sharing options...
Vik's Posted January 15, 2018 Share Posted January 15, 2018 4 hours ago, exoplanet said: ... Also. riding up hill, but at the same speed as flat draws a higher current. Could this be dangerous? with the bms cutting off?? Or will tiltback save you, keeping you under the current limit? Definitely dangerous. And tiltback is essentially the "EUC trying to outrun you" by working even harder, so if you're rolling up the hill with maximum speed - it could happen that there is no available power to tilt you back... Link to comment Share on other sites More sharing options...
exoplanet Posted January 16, 2018 Share Posted January 16, 2018 I rode the ninebot up a steep hill. It began screaming with beeps at a point. so it seems the ninebot really isnt suited for the speeds it is set for. Is that an alarm for max current? rapid succession beeps. It is hard to know how fast one can ride at any given hill One could ride a bit slower up hills (20kmh) and faster on the flats, but one will of course forget and DIE! Link to comment Share on other sites More sharing options...
Vik's Posted January 16, 2018 Share Posted January 16, 2018 4 hours ago, exoplanet said: I rode the ninebot up a steep hill. It began screaming with beeps at a point. so it seems the ninebot really isnt suited for the speeds it is set for. Is that an alarm for max current? rapid succession beeps. It is hard to know how fast one can ride at any given hill One could ride a bit slower up hills (20kmh) and faster on the flats, but one will of course forget and DIE! Correct. Fast beeps is the overcurrent alarm. And last warning as well since at this point there is no more power available for other than beeping... Link to comment Share on other sites More sharing options...
Cranium Posted January 17, 2018 Share Posted January 17, 2018 If you want to ride the E+ as a P, you need a battery pack that can deliver the amps that are required. But even then the motor's capability to handle the higher current is unknown. Link to comment Share on other sites More sharing options...
Cranium Posted January 17, 2018 Share Posted January 17, 2018 1 hour ago, exoplanet said: What does one do about the battery to have it not be a problem? what current can the current battery supply and what do i need to ride at 30 You need a better battery pack or you need to put another Ninebot one E+ battery in parallel with the existing pack to distribute load if you want to get the 60% increase in power that the P was rated to deliver. The Ninebot one E+ cells are rated at 10A max each so with the battery having 2 cells in parallel it can deliver a theoretical maximum of 20A in the best of conditions. Reality would probably be closer to about 14A-16A. The Ninebot one P cells are rated at 20A max so realistically around 28A-32A max. Link to comment Share on other sites More sharing options...
exoplanet Posted January 17, 2018 Share Posted January 17, 2018 What is the best way of connecting them in parallell? cutting the wire and soldering the positives and negatives together? and where is the best place to mount the extra battery?I have seen some mount it inside the shell, but i dont have a spot welder. Maybe just stick it in a sack and tape or screw it in place. Where can i get batteries for free or cheap? Link to comment Share on other sites More sharing options...
Chriull Posted January 17, 2018 Share Posted January 17, 2018 11 minutes ago, exoplanet said: What is the best way of connecting them in parallell? cutting the wire and soldering the positives and negatives together? and where is the best place to mount the extra battery?I have seen some mount it inside the shell, but i dont have a spot welder. Maybe just stick it in a sack and tape or screw it in place. There are battery expansion sets available at for example 1radwerkstatt.de . I would not recommend some sack, tape, screws and tinkering. 11 minutes ago, exoplanet said: Where can i get batteries for free or cheap? You want performing batteries and not junk!? Link to comment Share on other sites More sharing options...
steve454 Posted January 17, 2018 Share Posted January 17, 2018 1 hour ago, exoplanet said: What does one do about the battery to have it not be a problem? what current can the current battery supply and what do i need to ride at 30 It is easier to get an Inmotion v8 or Kingsong wheel that already go 30 than to modify a ninebot. Also they have bigger batteries. Link to comment Share on other sites More sharing options...
Inductores Posted January 18, 2018 Share Posted January 18, 2018 12 hours ago, exoplanet said: https://www.ebay.com/itm/CJMCU-Jlink-for-SWD-Jlink-3-Wire-for-STM32-on-SWD-Debug/381391437772?hash=item58ccb37fcc:g:KcUAAOSwDNdV7UMX will this work? Nope, RESET pin is missing. Link to comment Share on other sites More sharing options...
exoplanet Posted January 18, 2018 Share Posted January 18, 2018 could you link to one that would work? also who would have one on my planet? programmers? universities?? Link to comment Share on other sites More sharing options...
Inductores Posted January 18, 2018 Share Posted January 18, 2018 1 hour ago, exoplanet said: could you link to one that would work? also who would have one on my planet? programmers? universities?? This is the one I have: https://www.digikey.com/product-detail/en/stmicroelectronics/ST-LINK-V2/497-10484-ND/2214535 Link to comment Share on other sites More sharing options...
pollytronman Posted January 22, 2018 Share Posted January 22, 2018 Judging @spattex experiences 30 Km/h is quite safe and stable with an additional battery pack. Guys, do you think 35Km/h would be possible for leveled road with no wind and not fast accelerations for some seconds? I thought most problems with voltage drops or high current come with fast changes to speed, but once speed is got, is it so energy hungry to maintain? This screenshot is at max speed with extra battery pack but default 1.4.0 firmware, going quite steep uphill, but current reading are almost 17 amps, I thought max amps were 10A. Link to comment Share on other sites More sharing options...
pollytronman Posted January 28, 2018 Share Posted January 28, 2018 Finally managed to install P firmware on E+ with MRN76 tool. I need to activate "high speed mode" on the app but since version 4.x in android it dissapeared. Anybody has a older apk version to install and test? Link to comment Share on other sites More sharing options...
steve454 Posted January 28, 2018 Share Posted January 28, 2018 2 minutes ago, pollytronman said: Finally managed to install P firmware on E+ with MRN76 tool. I need to activate "high speed mode" on the app but since version 4.x in android it dissapeared. Anybody has a older apk version to install and test? Don't know if this will work, I downloaded it for my E+ and some of the functions don't work without signing in, and I suspect it won't let you since the new app was forced to be used. Link to comment Share on other sites More sharing options...
pollytronman Posted January 28, 2018 Share Posted January 28, 2018 22 minutes ago, steve454 said: Don't know if this will work, I downloaded it for my E+ and some of the functions don't work without signing in, and I suspect it won't let you since the new app was forced to be used. Thanks a lot steve454 I gave it a shot but unfortunately it doesn't seem to have that option enabled either. The actual iOS ninebot app supposedly does. Should look something like this screenshot: Link to comment Share on other sites More sharing options...
steve454 Posted January 28, 2018 Share Posted January 28, 2018 9 minutes ago, pollytronman said: Thanks a lot steve454 I gave it a shot but unfortunately it doesn't seem to have that option enabled either. The actual iOS ninebot app supposedly does. Should look something like this screenshot: Ah! I just remembered IOS has more functions than android app. I don't have IOS phone, but now I remember seeing that high speed slider in another post a few months ago. Good luck I hope someone knows how to make it work. It seems @spattex last visited 20 OCT 2017. Link to comment Share on other sites More sharing options...
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