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About evil696

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  1. Share some photos of motherboard HQ, i will see and tell you what to chceck.
  2. Hi i had V5F motherboard to reapir after crash, in my case there was nothing to do, evrerything was burned, crash was so hard that pcb touch to radiator and shortcut few connections, MCU died, motor MCU also died, your case is different, you was able to turn on wheel after crash, first disassembey wheel and do some photos of PCB, first chceck fuse on pcb, if fuse was burned chceck shortcuts on all mosfets next chceck radiator if you see that pcb touch to radiator you have pcb to replace, there's nothing you can do. Motor in this wheel have also bad construcion.
  3. I want to buy broken Rockwheel GT16 for repair.
  4. Write to seller he propably gives you schematic.
  5. Hi nice job:) Memory wasnt erased but data protecion on MCU gives you all 00 or FF if you try to read data its normal. In your case you can do 2 things, cut off original MCU and connect logical signals from arduino to mosfet drivers (its 8 pin smd chip near by motor coil cables), on PCB you have 3 mosfet drivers for single motor, but worst thing in this case will be get signals from hall sensors. There is simple way to do your project, buy this https://www.aliexpress.com/item/33040206964.html?spm=a2g0o.productlist.0.0.54c57913zO8t5n&algo_pvid=4f81bb89-6941-4134-bb92-4ba7d254835d&algo_expid=4f81bb89-6941-4134-bb92-4ba7d254835d-11&btsid=0ab6f82c15882754386525063ef569&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ its simple and cheap bldc motor driver, you can connect it to arduino and do what you want
  6. Hi i think it wont be easy cause most of MCUs have data protection and you wont download firmware from working chip another thing is that company wont share this firmware. Tell me some more about this robot maybe there will be another solution.
  7. If you connect BMS with ballancer you don't need to balance cells when charging, balancer in bms do the job when charging is done (i didn't see any 13s charger with ballancer and if you find any it wont be cheap). https://www.aliexpress.com/item/33023638541.html?spm=a2g0o.productlist.0.0.745cfdaaihelHG&algo_pvid=83ba773a-1ed8-4423-8fc7-e7f063f629ec&algo_expid=83ba773a-1ed8-4423-8fc7-e7f063f629ec-19&btsid=0b0a0ad815881933040573461e47a7&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ This is best BMS i used it's cheap, have ballancer and same connections for charge/discharge 16S 45A. To make a charger just buy DC-DC bostup converter like this or any compatible with your parameters. https://www.aliexpress.com/item/4000232811203.html?spm=a2g0o.productlist.0.0.704a418czrOCoU&algo_pvid=438a3721-f98c-4520-99cb-2372432944ad&algo_expid=438a3721-f98c-4520-99cb-2372432944ad-12&btsid=0ab6fa7b15881968510084633e6ea6&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ or https://www.aliexpress.com/item/4000122349939.html?spm=a2g0o.productlist.0.0.704a418czrOCoU&s=p&ad_pvid=202004291447311606870342286370001397498_3&algo_pvid=438a3721-f98c-4520-99cb-2372432944ad&algo_expid=438a3721-f98c-4520-99cb-2372432944ad-2&btsid=0ab6fa7b15881968510084633e6ea6&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ I hope you know how to set CC CV on converter. Connect server PSU like this dps-700gb a or any you want (just look for popular PSU cause you get pinout easly to start PSU). This link tell you much more about PSU. https://www.xsimulator.net/community/threads/2dof-to-3dof-diy-seat-mover.5271/page-2 The main problem is input voltage on converter, used server PSU is cheap but have only 12V and it gives you 240W output on converter 240 / 48 = 5A but nothing more so it doesn't matter if you use 400W or 700W PSU.
  8. No i just take first PDF. Max charging current is dependent on temperature. I will not try to charge 18650 with 1C.
  9. If you have 450W motor and you plan to connecet 5 Cell in parallel you don't need to use high current 18650, cause most of producents says that max continues current on normal 18650 is 2C, on 3500mah will be 7A if you have 5 parallel it will be 35A continues current, your motor takes 10A propably 20A in peak, but if you wat to use high current 18650 dont take too expensive 10A will be enough. BMS with Ballancer is thing that you must have with current cut off about 40A, don't look for 13S BMS cause most of them are "from - to" so take BMS 16S and connect 13S. BMS with load and charge parallel gives you oportunity to charge when you use your skateboard, you can make another battery pack in backpack, use dc-dc convertert to set constant current and you have much more distance. If you connect 5P battery charge with 2A charger will be too long, you can use 5A charger it will be 1A on cell, for MJ1 0.68A is standard charge and 1,7A is rapid, so 1A per cell will be best option, don't buy charger just DIY it's simple, ONE server redundant power supply, ONE DC-DC converter with CC-CV to setup current and voltage.
  10. It's not easy but possible to repair. Can you tell me where in china i can find something like this.
  11. If mosfets are burned (short circuit) you will have resistance when you try to spin motor, resistance will gone when you disconnect motor coil wires.
  12. First i will try to test hall sensors in motor, plug in voltage 3v - 5v and chceck hall sensors output. If any hall sensor will be broken you need to have some skills to change broken part.
  13. evil696

    V8 won't turn on

    Wheel doesnt move freely cauce mosfets goes to shotcut maybe there is another problem with this wheel, it can be Hall sensors in motor or motor wiring, If you unplug motor coil cables wheel should moves freely.
  14. Hi thanks for offers please chceck shipping cost to Poland and i will think about it. Ofcourse for two offers E+ and 14C.
  15. Is v8 broken or working? How much do you want for it?
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